From dshelms at comcast.net Sat Jul 1 01:01:31 2006 From: dshelms at comcast.net (Dave Helms) Date: Sat, 01 Jul 2006 01:01:31 -0400 Subject: [wxqc] Analysis In-Reply-To: <000201c69b3c$413a4a40$6401a8c0@marion> References: <000201c69b3c$413a4a40$6401a8c0@marion> Message-ID: <44A601AB.9040304@comcast.net> Hi Marion, What CWOP station ID are you? We really need this info when people ask for feedback on QC for their station. The hardware instructions you refer to are not correct, you should read the CWOP Station Guide to get a sense of proper siting: http://mywebpages.comcast.net/dshelms/CWOP_Guide.pdf Without looking at your station time-series, siting temperature sensor under a house eve causes you to measure the trapped heat under the eve, and not the ambient, well mixed, atmospheric temperature. The LaCrosse "cone" itself, which I suspect you have, is not a proper radiation shield as it traps heat due to a lack of ventilation. We suggest the Cone be replaced with a Gill-type shield (see the CWOP Guide). Hope this helps, Dave CW0351 Marion C. Maher wrote: >I am new to uploading data to CWOP and am still in the stage of figuring >things out. When I first started uploading, the analysis said that my >temperature readings were too high, so I "tweaked" the data on the WUHU >software to 99% of normal, and then for a few weeks it said the readings >were good. > >The last few days the analysis says that I am experiencing a solar heating >problem. My >sensor is located on a 1x1" board on the North side of the house about 6 >feet off of the ground, and about 4 feet below a deep eave. This was a >method the instructions that came with the equipment said could be used to >locate the sensor. This location never gets the sun, it is always in the >shade. It also has a radiation shield that came with the unit >that has vents, no fan. > >I also have questions about the analysis process, is this done by comparing >data from other local sources? If so, the closest source you have listed is >the one at Quillayute Airport, 8.6 miles west and quite a bit lower in >elevation. They are only 3 miles or so from the coast and thus temperatures >are lowered by the proximity to the ocean and the lower elevation. I am >sure you know this already and I don't mean to have an attitude of telling >you your business, as I am also sure you are quite a bit more experienced at >this than am I. If you can educate me and are willing, I would greatly >appreciate it. > >I am also wanting to know what "unverified" means in the response that the >WUHU software is getting from CWOP about my data. Is there something I need >to do or correct to have a "verified" status? > >Thank you for your response and education, it is greatly appreciated. > >Marion >Forks, WA > >_______________________________________________ >wxqc mailing list >wxqc at lists.gladstonefamily.net >http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > >The contents of this message are the responsibility of the author. > > > > From dshelms at comcast.net Sat Jul 1 01:19:47 2006 From: dshelms at comcast.net (Dave Helms) Date: Sat, 01 Jul 2006 01:19:47 -0400 Subject: [wxqc] KN4LF/AR592 Obs Data Mesowest QC Caution In-Reply-To: <002201c69ad1$25c8b230$6401a8c0@thomas> References: <002201c69ad1$25c8b230$6401a8c0@thomas> Message-ID: <44A605F3.8020504@comcast.net> Hi Thomas... everything looks OK to me. Dave CW0351 Thomas Giella KN4LF wrote: > *My CWOP weather station KN4LF/AR592 observation data is showing as > within normal range as far as CWOP QC > http://weather.gladstonefamily.net/site/AR692 . But on Meso West my > observation data have been flagged at "Caution" for several weeks > **http://www.met.utah.edu/cgi-bin/droman/meso_base.cgi?stn=AR692 . * > ** > *Anybody have an idea as to what's going on?* > ** > *Take Care, > Thomas F. Giella, KN4LF > Retired Meteorologist & Space Plasma Physicist > Lakeland, FL, USA > flycylone at tampabay.rr.com * > > *NWS Tampa Bay, FL SKYWARN Observer #POL-10A* > > *Lakeland, FL NWS CWOP Weather Station #AR692/KN4LF 3 Second Data: > http://www.kn4lf.com/index1.html > Lakeland, FL NWS CWOP Weather Station #AR692/KN4LF 3 Minute Data: > http://www.kn4lf.com/index.htm > Lakeland, FL Daily Climatological Weather Data Archive: > http://www.kn4lf.com/kn4lf22.htm > Florida Raw Weather Forecasting Product Links: > http://www.kn4lf.com/kn4lf13.htm > Florida Daily Weather Discussion Blog: http://www.kn4lf.com/flwx1.htm > Man Induced Climate Change Refuted: > http://www.kn4lf.com/globalwarminglie.htm* > > ** > ** > * > * > >------------------------------------------------------------------------ > >No virus found in this outgoing message. >Checked by AVG Free Edition. >Version: 7.1.394 / Virus Database: 268.9.5/377 - Release Date: 6/27/2006 > > >------------------------------------------------------------------------ > >_______________________________________________ >wxqc mailing list >wxqc at lists.gladstonefamily.net >http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > >The contents of this message are the responsibility of the author. > From drlee6530 at drlee.com Sun Jul 2 14:36:04 2006 From: drlee6530 at drlee.com (dr. Lee) Date: Sun, 2 Jul 2006 12:36:04 -0600 Subject: [wxqc] WxSolution program with a Davis Vantage Pro 2 Message-ID: <000001c69e06$62c18580$0c01a8c0@drlee.com> Does anyone have experance with this program with a Davis listed I the subject line? I am currently trying it out for the 20 day free trial and just thought I would see if any users are on the group and what kind of problems or setup problems you may have run into. N5IHE From kdmiller at oldsgmail.com Sun Jul 2 15:41:31 2006 From: kdmiller at oldsgmail.com (Keith Miller) Date: Sun, 02 Jul 2006 15:41:31 -0400 Subject: [wxqc] WxSolution program with a Davis Vantage Pro 2 In-Reply-To: <000001c69e06$62c18580$0c01a8c0@drlee.com> Message-ID: <6C1D8BD60472475980BC4D46EACBDBFB@sauron> > -----Original Message----- > From: wxqc-bounces at lists.gladstonefamily.net > [mailto:wxqc-bounces at lists.gladstonefamily.net]On Behalf Of dr. Lee > Sent: Sunday, July 02, 2006 2:36 PM > To: wxqc at lists.gladstonefamily.net > Subject: [wxqc] WxSolution program with a Davis Vantage Pro 2 > > > Does anyone have experance with this program with a Davis > listed I the subject line? > > I am currently trying it out for the 20 day free trial > and just thought I would see if any users are on the group > and what kind of problems or setup problems you may have > run into. > I am. Can't say there's been any issues at all. Aside from I got an Envoy to use it with and didn't think to set the altitude in the Envoy, have to use Weatherlink to do that. Keith -- CW5250 => http://weather.stadhaugh.com From drlee6530 at drlee.com Sun Jul 2 16:03:36 2006 From: drlee6530 at drlee.com (dr. Lee) Date: Sun, 2 Jul 2006 14:03:36 -0600 Subject: [wxqc] WxSolution program with a Davis Vantage Pro 2 Message-ID: <000001c69e12$9d202f90$0c01a8c0@drlee.com> So you set your MSL in both the Davis and put the same number in WX and it ofsets for the Brometer So CWOP gets the right value? I have been using VPLive and had no problems but wanted more capabilities that is why I Am trying Wx. N5IHE On 7/2/2006 1:41:31 PM, Keith Miller (kdmiller at oldsgmail.com) wrote: > > -----Original Message----- > > From: wxqc-bounces at lists.gladstonefamily.net > > [mailto:wxqc-bounces at lists.gladstonefamily.net]On Behalf Of dr. Lee > > Sent: Sunday, July 02, 2006 2:36 PM > > To: wxqc at lists.gladstonefamily.net > > Subject: [wxqc] WxSolution program with a Davis Vantage Pro 2 > > > > > > Does anyone have experance with this program with a Davis listed I > > the subject line? > > > > I am currently trying it out for the 20 day free trial > > and just thought I would see if any users are on the group and what > > kind of problems or setup problems you may have run into. > > > > I am. Can't say there's been any issues at all. Aside from > I got an Envoy to use it with and didn't think to set the > altitude in the Envoy, have to use Weatherlink to do that. > > > Keith > -- > CW5250 => http://weather.stadhaugh.com > > > > > _______________________________________________ > wxqc mailing list > wxqc at lists.gladstonefamily.net > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > The contents of this message are the responsibility of the author. From kdmiller at oldsgmail.com Sun Jul 2 16:40:50 2006 From: kdmiller at oldsgmail.com (Keith Miller) Date: Sun, 02 Jul 2006 16:40:50 -0400 Subject: [wxqc] WxSolution program with a Davis Vantage Pro 2 In-Reply-To: <000001c69e12$9d202f90$0c01a8c0@drlee.com> Message-ID: > -----Original Message----- > From: wxqc-bounces at lists.gladstonefamily.net > [mailto:wxqc-bounces at lists.gladstonefamily.net]On Behalf Of dr. Lee > Sent: Sunday, July 02, 2006 4:04 PM > To: wxqc at lists.gladstonefamily.net > Subject: Re: [wxqc] WxSolution program with a Davis Vantage Pro 2 > > > So you set your MSL in both the Davis and put the same > number in WX and it ofsets for the Brometer So CWOP gets > the right value? > I believe the altitude entered in WX is only used for the reports. I asked the author if he was aware of the Davis baro issue just recently and he hadn't been aware of it. Keith -- CW5250 => http://weather.stadhaugh.com From CreweWeather at earthlink.net Sun Jul 2 18:53:43 2006 From: CreweWeather at earthlink.net (CreweWeather) Date: Sun, 2 Jul 2006 18:53:43 -0400 Subject: [wxqc] WxSolution program with a Davis Vantage Pro 2 In-Reply-To: <000001c69e12$9d202f90$0c01a8c0@drlee.com> Message-ID: <000d01c69e2a$5eeea130$0400a8c0@TCTP6> I don't believe you will be disappointed with WxSolution. I use WxSolution in conjunction with VPLive, Weatherlink, WsWin32 and VWS thanks to Steve's VirtualVP for my VP1 Plus. The only negative side of WX is the BETA Rapid Fire for Wunderground Module that still needs some work, other than that I am very satisfied with WX for the many tags that fuel my web site. One unique feature that I like about WX is the Client that provides a live connection to your desktop. (btw, client 1.6 does not require an install, just copy the files to a directory) -Ingo ___________________________________________ Wunderground.com: KVACREWE4 Citizens Weather Observer Program: CW1842 WeatherForYou.com KVACREWE1 http://www.Crewe-Weather.com Local RSS Weather Feed http://www.crewe-weather.com/wlrss.xml Cell Phone & PDA Feed http://www.crewe-weather.com/wap.wml (htm) -----Original Message----- From: wxqc-bounces at lists.gladstonefamily.net [mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of dr. Lee Sent: Sunday, July 02, 2006 4:04 PM To: wxqc at lists.gladstonefamily.net Subject: Re: [wxqc] WxSolution program with a Davis Vantage Pro 2 So you set your MSL in both the Davis and put the same number in WX and it ofsets for the Brometer So CWOP gets the right value? I have been using VPLive and had no problems but wanted more capabilities that is why I Am trying Wx. N5IHE On 7/2/2006 1:41:31 PM, Keith Miller (kdmiller at oldsgmail.com) wrote: > > -----Original Message----- > > From: wxqc-bounces at lists.gladstonefamily.net > > [mailto:wxqc-bounces at lists.gladstonefamily.net]On Behalf Of dr. Lee > > Sent: Sunday, July 02, 2006 2:36 PM > > To: wxqc at lists.gladstonefamily.net > > Subject: [wxqc] WxSolution program with a Davis Vantage Pro 2 > > > > > > Does anyone have experance with this program with a Davis listed I > > the subject line? > > > > I am currently trying it out for the 20 day free trial and just > > thought I would see if any users are on the group and what kind of > > problems or setup problems you may have run into. > > > > I am. Can't say there's been any issues at all. Aside from I got an > Envoy to use it with and didn't think to set the altitude in the > Envoy, have to use Weatherlink to do that. > > > Keith > -- > CW5250 => http://weather.stadhaugh.com > > > > > _______________________________________________ > wxqc mailing list > wxqc at lists.gladstonefamily.net > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > The contents of this message are the responsibility of the author. _______________________________________________ wxqc mailing list wxqc at lists.gladstonefamily.net http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc The contents of this message are the responsibility of the author. From drlee6530 at drlee.com Sun Jul 2 19:37:40 2006 From: drlee6530 at drlee.com (dr. Lee) Date: Sun, 2 Jul 2006 17:37:40 -0600 Subject: [wxqc] WxSolution program with a Davis Vantage Pro 2 In-Reply-To: Message-ID: <000001c69e30$830acde0$0c01a8c0@drlee.com> Davis has modified the firmware and their software but if you use just their software it looks like it still sends the wrong valu for the barometer. Their software with VPLive work fine and give green checks for all. I will let all know if the new firmware with WX sends the correct baro to the database and I still get green checks as I have with VPLive. N5IHE > -----Original Message----- > From: wxqc-bounces at lists.gladstonefamily.net > [mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of > Keith Miller > Sent: Sunday, July 02, 2006 2:41 PM > To: 'Discussion of weather data quality issues' > Subject: Re: [wxqc] WxSolution program with a Davis Vantage Pro 2 > > > > -----Original Message----- > > From: wxqc-bounces at lists.gladstonefamily.net > > [mailto:wxqc-bounces at lists.gladstonefamily.net]On Behalf Of dr. Lee > > Sent: Sunday, July 02, 2006 4:04 PM > > To: wxqc at lists.gladstonefamily.net > > Subject: Re: [wxqc] WxSolution program with a Davis Vantage Pro 2 > > > > > > So you set your MSL in both the Davis and put the same > > number in WX and it ofsets for the Brometer So CWOP gets > > the right value? > > > > I believe the altitude entered in WX is only used for the > reports. I asked the author if he was aware of the Davis baro > issue just recently and he hadn't been aware of it. > > > Keith > -- > CW5250 => http://weather.stadhaugh.com > _______________________________________________ > wxqc mailing list > wxqc at lists.gladstonefamily.net > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > The contents of this message are the responsibility of the author. > From spamfree at pensom.org Sun Jul 2 23:15:12 2006 From: spamfree at pensom.org (spamfree at pensom.org) Date: Sun, 2 Jul 2006 20:15:12 -0700 Subject: [wxqc] WxSolution program with a Davis Vantage Pro 2 Message-ID: Hi, Davis' new firmware doesn't address the barometer/altimeter issue. The Vantage Pro console and envoy still output a sea level reduced pressure (not altimeter). The WeatherLink software latest version now calculates the altimeter from the console's sea level pressure. This is an important point, because it means that only those software packages that do the altimeter calculation will be able to send altimeter to CWOP. As far as I know, WeatherDisplay, PC-WeatherStation (WSWin), VPLive, and WeatherLink are the only ones that do this. Steve ======= At 2006-07-02, 17:37:40 you wrote: ======= >Davis has modified the firmware and their software but if you use just their >software it looks like it still sends the wrong valu for the barometer. >Their software with VPLive work fine and give green checks for all. I will >let all know if the new firmware with WX sends the correct baro to the >database and I still get green checks as I have with VPLive. > >N5IHE > >> -----Original Message----- >> From: wxqc-bounces at lists.gladstonefamily.net >> [mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of >> Keith Miller >> Sent: Sunday, July 02, 2006 2:41 PM >> To: 'Discussion of weather data quality issues' >> Subject: Re: [wxqc] WxSolution program with a Davis Vantage Pro 2 >> >> >> > -----Original Message----- >> > From: wxqc-bounces at lists.gladstonefamily.net >> > [mailto:wxqc-bounces at lists.gladstonefamily.net]On Behalf Of dr. Lee >> > Sent: Sunday, July 02, 2006 4:04 PM >> > To: wxqc at lists.gladstonefamily.net >> > Subject: Re: [wxqc] WxSolution program with a Davis Vantage Pro 2 >> > >> > >> > So you set your MSL in both the Davis and put the same >> > number in WX and it ofsets for the Brometer So CWOP gets >> > the right value? >> > >> >> I believe the altitude entered in WX is only used for the >> reports. I asked the author if he was aware of the Davis baro >> issue just recently and he hadn't been aware of it. >> >> >> Keith >> -- >> CW5250 => http://weather.stadhaugh.com >> _______________________________________________ >> wxqc mailing list >> wxqc at lists.gladstonefamily.net >> http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc >> >> The contents of this message are the responsibility of the author. >> > >_______________________________________________ >wxqc mailing list >wxqc at lists.gladstonefamily.net >http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > >The contents of this message are the responsibility of the author. > From drlee6530 at drlee.com Mon Jul 3 00:22:39 2006 From: drlee6530 at drlee.com (dr. Lee) Date: Sun, 2 Jul 2006 22:22:39 -0600 Subject: [wxqc] WxSolution program with a Davis Vantage Pro 2 In-Reply-To: <1151893333_2620@mail> Message-ID: <000001c69e58$5273f6c0$0c01a8c0@drlee.com> I have the latest Davis software and it still does not output the correct numbers for barometer. Still need to use VPLive!! WX will not work with Davis. Returning back to VPLive. N5IHE > -----Original Message----- > From: wxqc-bounces at lists.gladstonefamily.net > [mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of > spamfree at pensom.org > Sent: Sunday, July 02, 2006 9:15 PM > To: Discussion of weather data quali > Subject: Re: [wxqc] WxSolution program with a Davis Vantage Pro 2 > > > Hi, > > Davis' new firmware doesn't address the barometer/altimeter > issue. The Vantage Pro console and envoy still output a sea > level reduced pressure (not altimeter). The WeatherLink > software latest version now calculates the altimeter from the > console's sea level pressure. This is an important point, > because it means that only those software packages that do > the altimeter calculation will be able to send altimeter to > CWOP. As far as I know, WeatherDisplay, PC-WeatherStation > (WSWin), VPLive, and WeatherLink are the only ones that do this. > > Steve > > ======= At 2006-07-02, 17:37:40 you wrote: ======= > > >Davis has modified the firmware and their software but if > you use just > >their software it looks like it still sends the wrong valu for the > >barometer. Their software with VPLive work fine and give > green checks > >for all. I will let all know if the new firmware with WX sends the > >correct baro to the database and I still get green checks as I have > >with VPLive. > > > >N5IHE > > > >> -----Original Message----- > >> From: wxqc-bounces at lists.gladstonefamily.net > >> [mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of > >> Keith Miller > >> Sent: Sunday, July 02, 2006 2:41 PM > >> To: 'Discussion of weather data quality issues' > >> Subject: Re: [wxqc] WxSolution program with a Davis Vantage Pro 2 > >> > >> > >> > -----Original Message----- > >> > From: wxqc-bounces at lists.gladstonefamily.net > >> > [mailto:wxqc-bounces at lists.gladstonefamily.net]On Behalf > Of dr. Lee > >> > Sent: Sunday, July 02, 2006 4:04 PM > >> > To: wxqc at lists.gladstonefamily.net > >> > Subject: Re: [wxqc] WxSolution program with a Davis Vantage Pro 2 > >> > > >> > > >> > So you set your MSL in both the Davis and put the same > number in WX > >> > and it ofsets for the Brometer So CWOP gets the right value? > >> > > >> > >> I believe the altitude entered in WX is only used for the > >> reports. I asked the author if he was aware of the Davis baro > >> issue just recently and he hadn't been aware of it. > >> > >> > >> Keith > >> -- > >> CW5250 => http://weather.stadhaugh.com > >> _______________________________________________ > >> wxqc mailing list > >> wxqc at lists.gladstonefamily.net > >> http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > >> > >> The contents of this message are the responsibility of the author. > >> > > > >_______________________________________________ > >wxqc mailing list > >wxqc at lists.gladstonefamily.net > >http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > > >The contents of this message are the responsibility of the author. > > > > > _______________________________________________ > wxqc mailing list > wxqc at lists.gladstonefamily.net > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > The contents of this message are the responsibility of the author. > From notsome1else at insightbb.com Mon Jul 3 19:08:43 2006 From: notsome1else at insightbb.com (Kevin Gray) Date: Mon, 3 Jul 2006 18:08:43 -0500 Subject: [wxqc] WxSolution program with a Davis Vantage Pro 2 In-Reply-To: <000001c69e58$5273f6c0$0c01a8c0@drlee.com> Message-ID: <000601c69ef5$a17bf770$3101a8c0@sandwichshop.graysnetwork.com> I use Davis software, WeatherLink 5.7, with my Vantage Pro 1. After installing - I cleared any Baro off-set I had previously entered, made sure my altitude was entered correct, and have received Green Check from then on. Kevin Gray N9VPV AP879 > -----Original Message----- > From: wxqc-bounces at lists.gladstonefamily.net > [mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of dr. Lee > Sent: Sunday, July 02, 2006 11:23 PM > To: spamfree at pensom.org; 'Discussion of weather data quality issues' > Subject: Re: [wxqc] WxSolution program with a Davis Vantage Pro 2 > > > I have the latest Davis software and it still does not output > the correct numbers for barometer. Still need to use > VPLive!! WX will not work with Davis. Returning back to VPLive. > > N5IHE > From wa4ikq at nevets.oau.org Mon Jul 3 20:55:24 2006 From: wa4ikq at nevets.oau.org (Geoffrey Dick) Date: Mon, 3 Jul 2006 20:55:24 -0400 (EDT) Subject: [wxqc] WxSolution program with a Davis Vantage Pro 2 Message-ID: Kevin, I just looked at the CWOP QC graphs for your Wx Station AP879 and noticed that your barometer reading is consistantly 3 Millibars lower than nearby KGBG Galesburg Municipal Airport and KMQB Malcomb Muni Airport. It appears you are all nearly at the same elevation, AS879 = 771 FT, KGBG = 764 FT., KMQB = 706 FT. Who has the correct barometric offset ? A green check mark for barometric pressure based on uncalibrated stations means that one is following the wandering herd of nearby sheep. I believe Dr. Lee has a valid complaint. Geoffrey Dick AS140, WA4IKQ On Mon, 3 Jul 2006 "Kevin Gray" said: > To: "'Discussion of weather data quality issues'" > > Date: Mon, 3 Jul 2006 18:08:43 -0500 > Subject: Re: [wxqc] WxSolution program with a Davis Vantage Pro 2 > > I use Davis software, WeatherLink 5.7, with my Vantage Pro 1. > After installing - I cleared any Baro off-set I had previously entered, > made sure my altitude was entered correct, and have received Green Check > from then on. > > Kevin Gray > N9VPV > AP879 > > > -----Original Message----- > > [mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of dr. Lee > > Sent: Sunday, July 02, 2006 11:23 PM > > To: spamfree at pensom.org; 'Discussion of weather data quality issues' > > Subject: Re: [wxqc] WxSolution program with a Davis Vantage Pro 2 > > > > > > I have the latest Davis software and it still does not output > > the correct numbers for barometer. Still need to use > > VPLive!! WX will not work with Davis. Returning back to VPLive. > > > > N5IHE > > From notsome1else at insightbb.com Tue Jul 4 11:33:25 2006 From: notsome1else at insightbb.com (Kevin Gray) Date: Tue, 4 Jul 2006 10:33:25 -0500 Subject: [wxqc] WxSolution program with a Davis Vantage Pro 2 In-Reply-To: Message-ID: <000001c69f7f$4c3eb9c0$3101a8c0@sandwichshop.graysnetwork.com> Geoffery, Actually I was not implying that D-R Lee did'nt have a valid complaint. I was just stating that, after resetting my station to factory defaults and removing any user-entered off-set. Then running WeatherLink 5.7, my station has received a green check. As far as compairing my station to the other two, that are at aproxamately the same elevation, I did not. I wasn't trying to track with them, just trying to get my own analysis. >From looking at the QC chart for Galesburg Municipal Airpor, approx 2.5 Mi away It frequently has gaps in it's data, as you can see from the chart. http://weather.gladstonefamily.net/qchart/kgbg?date=20060704 And as far as Macomb Airport, although it is about the same elevation, being 32.5 Mi away, gets differnet weather (Ie. Storms, Tornado's etc.) that usually go south of me. Also from their chart, I see that it is usually higher than the analysis. http://weather.gladstonefamily.net/qchart/kmqb?date=20060704 Who has the correct barometric offset ? Don't know. I have no off-set entered and not really trying to follow the heard. > -----Original Message----- > From: Geoffrey Dick [mailto:wa4ikq at nevets.oau.org] > Sent: Monday, July 03, 2006 7:55 PM > To: notsome1else at insightbb.com; wxqc at lists.gladstonefamily.net > Subject: Re: [wxqc] WxSolution program with a Davis Vantage Pro 2 > > > Kevin, > > I just looked at the CWOP QC graphs for your Wx Station AP879 > and noticed that your barometer reading is consistantly 3 Millibars > lower than nearby KGBG Galesburg Municipal Airport and KMQB > Malcomb Muni Airport. It appears you are all nearly at the > same elevation, AS879 = 771 FT, KGBG = 764 FT., KMQB = 706 FT. > > Who has the correct barometric offset ? > > A green check mark for barometric pressure based on > uncalibrated stations means that one is following the > wandering herd of nearby sheep. > > I believe Dr. Lee has a valid complaint. > > > > Geoffrey Dick > AS140, WA4IKQ > From wa4ikq at nevets.oau.org Tue Jul 4 16:58:52 2006 From: wa4ikq at nevets.oau.org (Geoffrey Dick) Date: Tue, 4 Jul 2006 16:58:52 -0400 (EDT) Subject: [wxqc] WxSolution program with a Davis Vantage Pro 2 Message-ID: Kevin, If I came across too strong in my last posting, I did not mean any disrespect. You're being here on this reflector is testimony that you are dedicated to exploring quality issues related to measuring and gathering weather data. My message is only to point out that we should not become complacent in having a GREEN CHECK MARK rating in regard to barometric pressure. There are numerous issues to contend with, firmware in our weather stations, software written by developers, sensors by different manufacturers, with linearity, precision, and repeatability concerns. One cannot expect this equipment to be accurate fresh out of the box. Equipment needs to be routinely calibrated. The limits set for a GREEN CHECK mark are intentionally very WIDE, so as to encompass all the variables above and slight variations in weather. This is obviously, too generous a policy, and very misunderstood by outside observers. Most of us, myself included, do not have tools at our disposal to accurately calibrate our operating weather station on site. We choose instead, to compare our readings during times of quiesence, when weather is stable across widespread areas to something we believe we trust and can rely on. That item is not the Analysis. It is my contention, that nearby Airports are the best means to to compare and set barometric pressure. They are required by the FAA to routinely calibrate their weather stations to traceable standards. If the airport weather station happens to be at the same altitude, then the offset issue is a no-brainer. One must contend with infrequent times that the airport is broadcasting that information, and make measurements that coincide with the same time of day. Kevin, I am relieved to hear that your station performance just happened to coincide with the Analysis. If that happened without setting the offsets, then we can learn from this. Kind regards, Geoffrey Dick wa4ikq, AS140 Winter Park, FL From moyockweather at earthlink.net Tue Jul 4 12:16:31 2006 From: moyockweather at earthlink.net (Thomas Barstow) Date: Tue, 04 Jul 2006 12:16:31 -0400 Subject: [wxqc] 4th July Message-ID: <7.0.1.0.0.20060704121501.0190d540@earthlink.net> Like to wish everyone a nice 4th of July. Remember our Vets this great day in American History. We support them 110% Tom Barstow Visit our sites @: Moyock Weather Service www.moyockweather.com Wunderground Weather Moyock http://www.wunderground.com/US/NC/Moyock.html Sound Machine Radio Network http://www.soundmachinenc.com From chris at yipyap.com Wed Jul 5 22:26:01 2006 From: chris at yipyap.com (Chris Howard) Date: Wed, 05 Jul 2006 20:26:01 -0600 Subject: [wxqc] archive search ? Message-ID: <1152152761.4648.1.camel@moses.yipyap.com> Is there an archive searching facility for this list? I want to revisit my BP calibration, and I remember having a discussion about it on the list some time ago. Chris CW0078 From kdmiller at oldsgmail.com Wed Jul 5 23:01:38 2006 From: kdmiller at oldsgmail.com (Keith Miller) Date: Wed, 05 Jul 2006 23:01:38 -0400 Subject: [wxqc] archive search ? In-Reply-To: <1152152761.4648.1.camel@moses.yipyap.com> Message-ID: > -----Original Message----- > From: wxqc-bounces at lists.gladstonefamily.net > [mailto:wxqc-bounces at lists.gladstonefamily.net]On Behalf Of > Chris Howard > Sent: Wednesday, July 05, 2006 10:26 PM > To: wxqc at lists.gladstonefamily.net > Subject: [wxqc] archive search ? > > > > Is there an archive searching facility for this list? > I want to revisit my BP calibration, and I remember having > a discussion about it on the list some time ago. > About Nov 2005 maybe? http://www.google.com/search?hl=en&lr=&q=CW0078+barometer+wxqc&btnG=Se arch Keith -- CW5250 => http://weather.stadhaugh.com From DeerTrail131 at aol.com Fri Jul 7 23:33:46 2006 From: DeerTrail131 at aol.com (DeerTrail131 at aol.com) Date: Fri, 7 Jul 2006 23:33:46 EDT Subject: [wxqc] T.G.I.F Message-ID: <276.c86df93.31e0819a@aol.com> Russ, Randy & Mary Lynch: T.G.I.F How convenient that the Deer Trail Weather Station goes down on Fridays. _http://www.findu.com/cgi-bin/wxpage.cgi?call=CW0899!Deer%20Trail%20Schools&la st=24_ (http://www.findu.com/cgi-bin/wxpage.cgi?call=CW0899!Deer%20Trail%20Schools&last=24) _http://www.met.utah.edu/cgi-bin/droman/meso_base.cgi?stn=C0899_ (http://www.met.utah.edu/cgi-bin/droman/meso_base.cgi?stn=C0899) Well, I will be on Vacation starting Monday morning, someone can report it, or someone can view this email on this Friday and the Deer Trail Superintended can start it again on Monday? Strange that their was no power surges, or outage on Friday, lighting strikes? Hmmm! Hope to see you all next or on July 15th, 2006 just in time for the EOSS #107, 108 and possibly 109 is scheduled for a July 15, 2006 launch, (July 16, 2006 weather date). This is two, possibly, three big 3K balloons. Our customer is the Colorado University Space Grant Workshop V, Upward Bound and possibly MT State. We expect about 60 teachers and 30 Upward Bound students. 73's Ron Schaffer wd?bdq Deer Trail, Colorado. 80105 -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060707/1011537d/attachment.html From jimwc at frontiernet.net Sat Jul 8 11:42:58 2006 From: jimwc at frontiernet.net (jim) Date: Sat, 8 Jul 2006 08:42:58 -0700 Subject: [wxqc] rain gauge question Message-ID: to any one I was issued a Tru-Chek Rain gauge by the storm spotter coordinator in my area. My question is: is it accurate enough to calibrate my Electronic rain gauge to. My electronic rain gauge is a Peet Bros .01" pro rain gauge. or should I invest in a different type for calibration purposes. Jim CW4367 -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060708/abcdcb48/attachment.html From brillig at gmail.com Sat Jul 8 11:57:54 2006 From: brillig at gmail.com (Victor Engel) Date: Sat, 8 Jul 2006 10:57:54 -0500 Subject: [wxqc] rain gauge question In-Reply-To: References: Message-ID: I'm new to the electronic weather station business, but it seems to me that a Tru-Chek gauge will not be a very good way to calibrate. It's surface area is very small and consequently the precision is low. Siting is also very important. An accurate rain gauge is only as accurate as the location/shelter where it's placed. Reading up on your gauge, it looks like it works by funneling all rain into a drop counter. I suppose this would be dependent upon the cleanliness of the lens that senses the drops as well as the surface tension of the water. I bet if you washed your gauge with Dawn dishwashing detergent and didn't rinse completely, your gauge would be way off. I wonder how much the surface tension of rainwater actually varies.... I'm just brainstorming here.... On 7/8/06, jim wrote: > > to any one > > I was issued a Tru-Chek Rain gauge by the storm spotter coordinator in my > area. My question is: is it accurate enough to calibrate my Electronic rain > gauge to. > My electronic rain gauge is a Peet Bros .01" pro rain gauge. or should I > invest in a different type for calibration purposes. > > Jim > CW4367 > > > _______________________________________________ > wxqc mailing list > wxqc at lists.gladstonefamily.net > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > The contents of this message are the responsibility of the author. > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060708/74c98f52/attachment.html From jimwc at frontiernet.net Sat Jul 8 12:31:03 2006 From: jimwc at frontiernet.net (jim) Date: Sat, 8 Jul 2006 09:31:03 -0700 Subject: [wxqc] rain gauge question In-Reply-To: Message-ID: the sensor is 4 "wires / contacts" that the drop falls through and makes contact between at least 2 of them to "count" the drops. if you want to call this a "lens" Ok for lack of a better word. The reason I was wondering was we are in the "monsoon season" here and I had the Tru-Check mounted next to my Electronic rain gauge and it was measuring high, Electronic = .07, Tru-Check = .11. I have since re-mounted the tru-check because I could not get it completely level next to my Electronic. I will see how close it is next time we have a T-storm come through. I am thinking the Electronic is more accurate as long as it is level. Jim CW4367 -----Original Message----- From: wxqc-bounces at lists.gladstonefamily.net [mailto:wxqc-bounces at lists.gladstonefamily.net]On Behalf Of Victor Engel Sent: Saturday, July 08, 2006 8:58 AM To: Discussion of weather data quality issues Subject: Re: [wxqc] rain gauge question I'm new to the electronic weather station business, but it seems to me that a Tru-Chek gauge will not be a very good way to calibrate. It's surface area is very small and consequently the precision is low. Siting is also very important. An accurate rain gauge is only as accurate as the location/shelter where it's placed. Reading up on your gauge, it looks like it works by funneling all rain into a drop counter. I suppose this would be dependent upon the cleanliness of the lens that senses the drops as well as the surface tension of the water. I bet if you washed your gauge with Dawn dishwashing detergent and didn't rinse completely, your gauge would be way off. I wonder how much the surface tension of rainwater actually varies.... I'm just brainstorming here.... On 7/8/06, jim wrote: to any one I was issued a Tru-Chek Rain gauge by the storm spotter coordinator in my area. My question is: is it accurate enough to calibrate my Electronic rain gauge to. My electronic rain gauge is a Peet Bros .01" pro rain gauge. or should I invest in a different type for calibration purposes. Jim CW4367 _______________________________________________ wxqc mailing list wxqc at lists.gladstonefamily.net http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc The contents of this message are the responsibility of the author. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060708/e6023294/attachment.html From brillig at gmail.com Sat Jul 8 13:26:35 2006 From: brillig at gmail.com (Victor Engel) Date: Sat, 8 Jul 2006 12:26:35 -0500 Subject: [wxqc] rain gauge question In-Reply-To: References: Message-ID: I see a jumped to a conclusion I should not have jumped to. At http://www.binoculars.com/products/peet-bros-ultimeter-pro-rain-gauge-36176.htmlthey sell a lens cleaning fluid as an accessory to the unit, so I assumed there must be a lens to clean. Now I'm wondering if rainwater is always ionized enough to carry a current. It would have to be for this method to work. On 7/8/06, jim wrote: > > the sensor is 4 "wires / contacts" that the drop falls through and makes > contact between at least 2 of them to "count" the drops. if you want to call > this a "lens" Ok > for lack of a better word. The reason I was wondering was we are in the > "monsoon season" here and I had the Tru-Check mounted next to my Electronic > rain gauge and it was measuring high, Electronic = .07, Tru-Check = .11. I > have since re-mounted the tru-check because I could not get it completely > level next to my Electronic. I will see how close it is next time we have a > T-storm come through. I am thinking the Electronic is more accurate as long > as it is level. > > Jim > CW4367 > > -----Original Message----- > *From:* wxqc-bounces at lists.gladstonefamily.net [mailto: > wxqc-bounces at lists.gladstonefamily.net]*On Behalf Of *Victor Engel > *Sent:* Saturday, July 08, 2006 8:58 AM > *To:* Discussion of weather data quality issues > *Subject:* Re: [wxqc] rain gauge question > > I'm new to the electronic weather station business, but it seems to me > that a Tru-Chek gauge will not be a very good way to calibrate. It's surface > area is very small and consequently the precision is low. > > Siting is also very important. An accurate rain gauge is only as accurate > as the location/shelter where it's placed. > > Reading up on your gauge, it looks like it works by funneling all rain > into a drop counter. I suppose this would be dependent upon the cleanliness > of the lens that senses the drops as well as the surface tension of the > water. I bet if you washed your gauge with Dawn dishwashing detergent and > didn't rinse completely, your gauge would be way off. I wonder how much the > surface tension of rainwater actually varies.... > > I'm just brainstorming here.... > > On 7/8/06, jim wrote: > > > > to any one > > > > I was issued a Tru-Chek Rain gauge by the storm spotter coordinator in > > my area. My question is: is it accurate enough to calibrate my Electronic > > rain gauge to. > > My electronic rain gauge is a Peet Bros .01" pro rain gauge. or should I > > invest in a different type for calibration purposes. > > > > Jim > > CW4367 > > > > > > _______________________________________________ > > wxqc mailing list > > wxqc at lists.gladstonefamily.net > > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > > > The contents of this message are the responsibility of the author. > > > > > > _______________________________________________ > wxqc mailing list > wxqc at lists.gladstonefamily.net > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > The contents of this message are the responsibility of the author. > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060708/faff050b/attachment.html From Weather at pdfamily.com Sat Jul 8 14:32:11 2006 From: Weather at pdfamily.com (Milford Weather) Date: Sat, 8 Jul 2006 14:32:11 -0400 Subject: [wxqc] rain gauge question In-Reply-To: Message-ID: <200607081832.k68IWB427819@plus41.host4u.net> Personally I prefer to take it back a step and compare it to a known, in this case a calculated value. The following are my calculations based on a Davis rain gage, but can be used for others as long as you use the correct radius/diameter: Calculations: V=? r2 h (rain collector 6.5" diameter, 3.25" radius) ? r2 = 33.1831 V in3 / 33.1831 = inches rainfall Known: 1 US cup = 14.4375 in3 1 US qt = 57.75 in3 1 US Gal = 231.0 in3 Therefore. 1 cup = 0.4351" rainfall 1 qt = 1.7404" rainfall 1 Gal = 6.961' rainfall A few important notes: * It is Important to "release" the water at a reasonable rate into the gage (I use pin holes in the bottom of an old plastic container) * The larger the volume used reduces errors * Sample volume used must be accurate to begin with Check the new daily timelapse sky videos: http://www.pdfamily.com/weather/cams.htm Paul CW3414 SkyWarn Spotter http:/www.PDfamily.com/weather _____ From: wxqc-bounces at lists.gladstonefamily.net [mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of jim Sent: Saturday, July 08, 2006 11:43 AM To: wxqc at lists.gladstonefamily.net Subject: [wxqc] rain gauge question to any one I was issued a Tru-Chek Rain gauge by the storm spotter coordinator in my area. My question is: is it accurate enough to calibrate my Electronic rain gauge to. My electronic rain gauge is a Peet Bros .01" pro rain gauge. or should I invest in a different type for calibration purposes. Jim CW4367 -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060708/7ca6acd3/attachment-0001.html -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: image/gif Size: 2356 bytes Desc: not available Url : http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060708/7ca6acd3/attachment-0001.gif From brillig at gmail.com Sat Jul 8 15:38:10 2006 From: brillig at gmail.com (Victor Engel) Date: Sat, 8 Jul 2006 14:38:10 -0500 Subject: [wxqc] Calibrating anemometers Message-ID: What techniques do people use to calibrate anemometers? My neighbor and I each have a Davis Vantage Pro anemometer, and his readings are usually higher than mine. Wind gusts, especially, are stronger on his. My wind direction sensor, however, seems to be more sensitive than his. Victor -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060708/5faee85b/attachment.html From drlee6530 at drlee.com Sat Jul 8 16:25:56 2006 From: drlee6530 at drlee.com (dr. Lee) Date: Sat, 8 Jul 2006 14:25:56 -0600 Subject: [wxqc] Calibrating anemometers Message-ID: <000001c6a2cc$b7fc6f40$0c01a8c0@drlee.com> The easiest way is to have Davis Cal it to NBS Traceable standards at their factory like they did on my barometer. N5IHE On 7/8/2006 1:38:10 PM, Victor Engel (brillig at gmail.com) wrote: > What techniques do people use to calibrate anemometers? My neighbor > and I each have a Davis Vantage Pro anemometer, and his readings are > usually higher than mine. Wind gusts, especially, are stronger on his. > My wind direction sensor, however, seems to be more sensitive than > his. > > Victor From brillig at gmail.com Sat Jul 8 16:49:57 2006 From: brillig at gmail.com (Victor Engel) Date: Sat, 8 Jul 2006 15:49:57 -0500 Subject: [wxqc] Calibrating anemometers In-Reply-To: <000001c6a2cc$b7fc6f40$0c01a8c0@drlee.com> References: <000001c6a2cc$b7fc6f40$0c01a8c0@drlee.com> Message-ID: That's $200, right? On 7/8/06, dr. Lee wrote: > > The easiest way is to have Davis Cal it to NBS Traceable standards at > their > factory like they did on my barometer. > > N5IHE > > > On 7/8/2006 1:38:10 PM, Victor Engel (brillig at gmail.com) wrote: > > What techniques do people use to calibrate anemometers? My neighbor > > and I each have a Davis Vantage Pro anemometer, and his readings are > > usually higher than mine. Wind gusts, especially, are stronger on his. > > My wind direction sensor, however, seems to be more sensitive than > > his. > > > > Victor > > _______________________________________________ > wxqc mailing list > wxqc at lists.gladstonefamily.net > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > The contents of this message are the responsibility of the author. > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060708/549f7a12/attachment.html From wa4ikq at nevets.oau.org Sat Jul 8 18:38:16 2006 From: wa4ikq at nevets.oau.org (Geoffrey Dick) Date: Sat, 8 Jul 2006 18:38:16 -0400 (EDT) Subject: [wxqc] Calibrating anemometers Message-ID: You can always take your weather station for a ride on the car, if you trust your dashboard speedometer, but the extension cord might cost more than $200. gd From brillig at gmail.com Sat Jul 8 18:54:08 2006 From: brillig at gmail.com (Victor Engel) Date: Sat, 8 Jul 2006 17:54:08 -0500 Subject: [wxqc] Calibrating anemometers In-Reply-To: References: Message-ID: I've got a wireless unit, so it can operate on batteries. I calibrate my speedometer regularly. That's easy to do with a stopwatch and mile markers. But there are complicating factors with using that method: you have to add local wind speed, which of course is exacerbated by traffic. Additionally, the car itself would affect windspeed. I do have a sunroof, so I could bring the anemometer on a pole and elevate it above these complicating features and drive down an empty road in calm weather.... On 7/8/06, Geoffrey Dick wrote: > > You can always take your weather station for a > ride on the car, if you trust your dashboard > speedometer, but the extension cord might cost > more than $200. > > gd > _______________________________________________ > wxqc mailing list > wxqc at lists.gladstonefamily.net > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > The contents of this message are the responsibility of the author. > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060708/37f5aba0/attachment.html From brillig at gmail.com Sat Jul 8 20:39:27 2006 From: brillig at gmail.com (Victor Engel) Date: Sat, 8 Jul 2006 19:39:27 -0500 Subject: [wxqc] Weatherlink 5.7 Message-ID: Weatherlink 5.7 was released a couple of months ago. I just upgraded today and notice an anomaly with APRS. The wind gust data no longer seems to be transmitted -- or it is being transmitted as zeroes. Prior to the upgrade, I had my software set to 1 minute gust/5 minute mean. I did not change the setting, which no longer seems to be available. The release notes say the software was changed to send 2 minute gust and 20 minute mean. If anyone else is using Weatherlink 5.7 to update APRS data, I'd like to get some confirmation of this and possibly submit a bug report. Of if there's something I can do in setup to ensure gust data is nonzero, let me know what that is. Victor -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060708/eb9bb74a/attachment.html From drlee6530 at drlee.com Sat Jul 8 21:24:08 2006 From: drlee6530 at drlee.com (dr. Lee) Date: Sat, 8 Jul 2006 19:24:08 -0600 Subject: [wxqc] Weatherlink 5.7 In-Reply-To: Message-ID: <001401c6a2f6$646cbc20$0c01a8c0@drlee.com> The only zero cost solution is to use VP Live with Davis software as Weatherlink still does not meet the requirements alone but still needs some help. N5IHE -----Original Message----- From: wxqc-bounces at lists.gladstonefamily.net [mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of Victor Engel Sent: Saturday, July 08, 2006 6:39 PM To: Discussion of weather data quality issues Subject: [wxqc] Weatherlink 5.7 Weatherlink 5.7 was released a couple of months ago. I just upgraded today and notice an anomaly with APRS. The wind gust data no longer seems to be transmitted -- or it is being transmitted as zeroes. Prior to the upgrade, I had my software set to 1 minute gust/5 minute mean. I did not change the setting, which no longer seems to be available. The release notes say the software was changed to send 2 minute gust and 20 minute mean. If anyone else is using Weatherlink 5.7 to update APRS data, I'd like to get some confirmation of this and possibly submit a bug report. Of if there's something I can do in setup to ensure gust data is nonzero, let me know what that is. Victor -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060708/49dac974/attachment.html From brillig at gmail.com Sat Jul 8 21:49:46 2006 From: brillig at gmail.com (Victor Engel) Date: Sat, 8 Jul 2006 20:49:46 -0500 Subject: [wxqc] Weatherlink 5.7 In-Reply-To: <001401c6a2f6$646cbc20$0c01a8c0@drlee.com> References: <001401c6a2f6$646cbc20$0c01a8c0@drlee.com> Message-ID: For me that would not be zero cost, because of com port contention. The com sharing software only works on Windows 2000 and Windows XP, I think. There is a commercial product for about $100 that works on other versions of Windows, but I don't have it yet. On 7/8/06, dr. Lee wrote: > > The only zero cost solution is to use VP Live with Davis software as > Weatherlink still does not meet the requirements alone but still needs some > help. > > N5IHE > > -----Original Message----- > *From:* wxqc-bounces at lists.gladstonefamily.net [mailto: > wxqc-bounces at lists.gladstonefamily.net] *On Behalf Of *Victor Engel > *Sent:* Saturday, July 08, 2006 6:39 PM > *To:* Discussion of weather data quality issues > *Subject:* [wxqc] Weatherlink 5.7 > > Weatherlink 5.7 was released a couple of months ago. I just upgraded today > and notice an anomaly with APRS. The wind gust data no longer seems to be > transmitted -- or it is being transmitted as zeroes. > > Prior to the upgrade, I had my software set to 1 minute gust/5 minute > mean. I did not change the setting, which no longer seems to be available. > The release notes say the software was changed to send 2 minute gust and 20 > minute mean. > > If anyone else is using Weatherlink 5.7 to update APRS data, I'd like to > get some confirmation of this and possibly submit a bug report. Of if > there's something I can do in setup to ensure gust data is nonzero, let me > know what that is. > > Victor > > > _______________________________________________ > wxqc mailing list > wxqc at lists.gladstonefamily.net > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > The contents of this message are the responsibility of the author. > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060708/5bc86b9c/attachment-0001.html From brillig at gmail.com Sat Jul 8 21:52:54 2006 From: brillig at gmail.com (Victor Engel) Date: Sat, 8 Jul 2006 20:52:54 -0500 Subject: [wxqc] Weatherlink 5.7 In-Reply-To: References: Message-ID: I think I figured it out. What you have to do is go back into the APRS profile and resave it. On 7/8/06, Victor Engel wrote: > > Weatherlink 5.7 was released a couple of months ago. I just upgraded today > and notice an anomaly with APRS. The wind gust data no longer seems to be > transmitted -- or it is being transmitted as zeroes. > > Prior to the upgrade, I had my software set to 1 minute gust/5 minute > mean. I did not change the setting, which no longer seems to be available. > The release notes say the software was changed to send 2 minute gust and 20 > minute mean. > > If anyone else is using Weatherlink 5.7 to update APRS data, I'd like to > get some confirmation of this and possibly submit a bug report. Of if > there's something I can do in setup to ensure gust data is nonzero, let me > know what that is. > > Victor > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060708/5041ff86/attachment.html From gerry.creager at tamu.edu Sun Jul 9 00:29:55 2006 From: gerry.creager at tamu.edu (Gerry Creager N5JXS) Date: Sat, 08 Jul 2006 23:29:55 -0500 Subject: [wxqc] Calibrating anemometers In-Reply-To: References: Message-ID: <44B08643.5050309@tamu.edu> Having followed a bit of this (I've been missing in action on vacation) the obvious question arises: What are the similarities and differences in instrument siting? Are you measuring at the same heights above ground? Is your anemometer shielded by buildings or trees preventing it from seeing higher readings (I know my station suffers from this). Calibrating (or making ad hoc changes to cal'd instruments) is a step one shouldn't undertake lightly. Dr. Lee's comment about sending it back to Davis makes the most sense if you're worried about cal. You also fail to mention the age of the instrument and whether casual inspection suggests the device may have suffered normal wear that could cause performance degradation. Gerry Victor Engel wrote: > What techniques do people use to calibrate anemometers? My neighbor and > I each have a Davis Vantage Pro anemometer, and his readings are usually > higher than mine. Wind gusts, especially, are stronger on his. My wind > direction sensor, however, seems to be more sensitive than his. > > Victor > > > ------------------------------------------------------------------------ > > _______________________________________________ > wxqc mailing list > wxqc at lists.gladstonefamily.net > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > The contents of this message are the responsibility of the author. -- Gerry Creager -- gerry.creager at tamu.edu Texas Mesonet -- AATLT, Texas A&M University Cell: 979.229.5301 Office: 979.458.4020 FAX: 979.862.3983 Office: 1700 Research Parkway Ste 160, TAMU, College Station, TX 77843 From brillig at gmail.com Sun Jul 9 00:53:30 2006 From: brillig at gmail.com (Victor Engel) Date: Sat, 8 Jul 2006 23:53:30 -0500 Subject: [wxqc] Calibrating anemometers In-Reply-To: <44B08643.5050309@tamu.edu> References: <44B08643.5050309@tamu.edu> Message-ID: Thank you for the reply. Here is a brief description of the siting. If you want, go to http://www.wunderground.com/stationmaps/gmap.asp?zip=78757&magic=1&wmo=99999and zoom in as far as possible while keeping North Allandale and North Central Austin SKYWARN in the picture. Then click on Satellite to see the buildings, trees, etc. Our stations are the two closest together on the map. In fact, you have to zoom in considerably before the symbols stop overlapping. Mine is the north one, North Allandale. The anemometer is mounted on a pole 12 feet above my two storey house. The house is 28 feet tall. It's mounted on the northernmost peak of the second storey, just northwest of a large red oak (casting its shadow on the street). My neighbor's unit is mounted on a taller pole over a single storey house two doors south of my house. It's actually one house north of where the symbol indicates. His house is surrounded by trees, but they are short trees (I'm not sure whether they taller than the pole or not). Both our units are at 40 feet. My pole extends farther if I want it to, but I wanted the same height for now (from the ground -- I think the ground is slightly higher at my house). My equipment is brand new, having been installed less than a month. In fact, tomorrow I am reinstalling the anemometer pole, because it's slightly tilted (perhaps by 3 degrees or so). We also both have Davis Vantage Pros, but his is wired, and mine is wireless. And he's running different software than I am. I don't know how much difference the software would make. I believe my neighbor's equipment is several years old. It was installed when I moved into the neighborhood over 3 years ago, and I think it was up for some time before that. You may also notice temperature differences that are significant during the day. I have a fan aspirated shelter. I don't think my neighbor does, and he has told me that his temperatures are too high due to a restriction in siting caused by a limitation imposed by cable length. Anyway, I don't intend to make any adjustments any time soon. But his will frequently register a breeze when mine doesn't register anything. That makes me wonder if something is adjusted too tight or if I screwed up attaching the cups somehow. I don't see what I could have screwed up, though. Is there a period of time before lubrication gets broken in? I wouldn't expect so. On 7/8/06, Gerry Creager N5JXS wrote: > > Having followed a bit of this (I've been missing in action on vacation) > the obvious question arises: What are the similarities and differences > in instrument siting? Are you measuring at the same heights above > ground? Is your anemometer shielded by buildings or trees preventing it > from seeing higher readings (I know my station suffers from this). > Calibrating (or making ad hoc changes to cal'd instruments) is a step > one shouldn't undertake lightly. Dr. Lee's comment about sending it > back to Davis makes the most sense if you're worried about cal. > > You also fail to mention the age of the instrument and whether casual > inspection suggests the device may have suffered normal wear that could > cause performance degradation. > > Gerry > > Victor Engel wrote: > > What techniques do people use to calibrate anemometers? My neighbor and > > I each have a Davis Vantage Pro anemometer, and his readings are usually > > higher than mine. Wind gusts, especially, are stronger on his. My wind > > direction sensor, however, seems to be more sensitive than his. > > > > Victor > > > > > > ------------------------------------------------------------------------ > > > > _______________________________________________ > > wxqc mailing list > > wxqc at lists.gladstonefamily.net > > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > > > The contents of this message are the responsibility of the author. > > -- > Gerry Creager -- gerry.creager at tamu.edu > Texas Mesonet -- AATLT, Texas A&M University > Cell: 979.229.5301 Office: 979.458.4020 FAX: 979.862.3983 > Office: 1700 Research Parkway Ste 160, TAMU, College Station, TX 77843 > _______________________________________________ > wxqc mailing list > wxqc at lists.gladstonefamily.net > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > The contents of this message are the responsibility of the author. > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060708/9643e084/attachment.html From gerry.creager at tamu.edu Sun Jul 9 01:50:04 2006 From: gerry.creager at tamu.edu (Gerry Creager N5JXS) Date: Sun, 09 Jul 2006 00:50:04 -0500 Subject: [wxqc] Calibrating anemometers In-Reply-To: References: <44B08643.5050309@tamu.edu> Message-ID: <44B0990C.5000502@tamu.edu> thanks fo rthe map/aerial photo reference. Makes this a *little* easier. Victor Engel wrote: > Thank you for the reply. > > Here is a brief description of the siting. If you want, go to > http://www.wunderground.com/stationmaps/gmap.asp?zip=78757&magic=1&wmo=99999 > > and zoom in as far as possible while keeping North Allandale and North > Central Austin SKYWARN in the picture. Then click on Satellite to see > the buildings, trees, etc. Our stations are the two closest together on > the map. In fact, you have to zoom in considerably before the symbols > stop overlapping. > > Mine is the north one, North Allandale. The anemometer is mounted on a > pole 12 feet above my two storey house. The house is 28 feet tall. It's > mounted on the northernmost peak of the second storey, just northwest of > a large red oak (casting its shadow on the street). My neighbor's unit > is mounted on a taller pole over a single storey house two doors south > of my house. It's actually one house north of where the symbol > indicates. His house is surrounded by trees, but they are short trees > (I'm not sure whether they taller than the pole or not). Both our units > are at 40 feet. My pole extends farther if I want it to, but I wanted > the same height for now (from the ground -- I think the ground is > slightly higher at my house). The overhead imagery suggests the red oak you identified near your instrument is taller and provides a significant section of blockage in azimuth. The predominant wind in central Texas (I'm in College Station) is generally from the southeast. Your tree is potentially shielding you and giving you lower readings. It'd be hard for me to be certain without visiting and doing a site survey. You might want to draw a plot of obstructions to your anemometer and see if that's the only problem. > My equipment is brand new, having been installed less than a month. In > fact, tomorrow I am reinstalling the anemometer pole, because it's > slightly tilted (perhaps by 3 degrees or so). We also both have Davis > Vantage Pros, but his is wired, and mine is wireless. And he's running > different software than I am. I don't know how much difference the > software would make. One would hope it's not a software glitch. May be, however. I just can't say. > I believe my neighbor's equipment is several years old. It was installed > when I moved into the neighborhood over 3 years ago, and I think it was > up for some time before that. Off the top, then, I'd expect yours to register more sensitivity than his... > You may also notice temperature differences that are significant during > the day. I have a fan aspirated shelter. I don't think my neighbor does, > and he has told me that his temperatures are too high due to a > restriction in siting caused by a limitation imposed by cable length. If both of you are reporting to CWOP I can check these easily. > Anyway, I don't intend to make any adjustments any time soon. But his > will frequently register a breeze when mine doesn't register anything. > That makes me wonder if something is adjusted too tight or if I screwed > up attaching the cups somehow. I don't see what I could have screwed up, > though. Is there a period of time before lubrication gets broken in? I > wouldn't expect so. Lubricants tend to wear "out" and not "in". I don't know if your construction practices might have caused a problem, but if you're gonna have the instrument down, anyway, to reinstall its pole, you might want to conduct a brief inspection to see if there are any obvious anomalies. gerry > On 7/8/06, *Gerry Creager N5JXS* > wrote: > > Having followed a bit of this (I've been missing in action on vacation) > the obvious question arises: What are the similarities and differences > in instrument siting? Are you measuring at the same heights above > ground? Is your anemometer shielded by buildings or trees preventing it > from seeing higher readings (I know my station suffers from this). > Calibrating (or making ad hoc changes to cal'd instruments) is a step > one shouldn't undertake lightly. Dr. Lee's comment about sending it > back to Davis makes the most sense if you're worried about cal. > > You also fail to mention the age of the instrument and whether casual > inspection suggests the device may have suffered normal wear that could > cause performance degradation. > > Gerry > > Victor Engel wrote: > > What techniques do people use to calibrate anemometers? My > neighbor and > > I each have a Davis Vantage Pro anemometer, and his readings are > usually > > higher than mine. Wind gusts, especially, are stronger on his. My > wind > > direction sensor, however, seems to be more sensitive than his. > > > > Victor > > > > > > > ------------------------------------------------------------------------ > > > > _______________________________________________ > > wxqc mailing list > > wxqc at lists.gladstonefamily.net > > > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > > > > The contents of this message are the responsibility of the author. > > -- > Gerry Creager -- gerry.creager at tamu.edu > Texas Mesonet -- AATLT, Texas A&M University > Cell: 979.229.5301 Office: 979.458.4020 FAX: 979.862.3983 > Office: 1700 Research Parkway Ste 160, TAMU, College Station, TX 77843 > _______________________________________________ > wxqc mailing list > wxqc at lists.gladstonefamily.net > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > The contents of this message are the responsibility of the author. > > > > ------------------------------------------------------------------------ > > _______________________________________________ > wxqc mailing list > wxqc at lists.gladstonefamily.net > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > The contents of this message are the responsibility of the author. -- Gerry Creager -- gerry.creager at tamu.edu Texas Mesonet -- AATLT, Texas A&M University Cell: 979.229.5301 Office: 979.458.4020 FAX: 979.862.3983 Office: 1700 Research Parkway Ste 160, TAMU, College Station, TX 77843 From drlee6530 at drlee.com Sun Jul 9 02:29:51 2006 From: drlee6530 at drlee.com (dr. Lee) Date: Sun, 9 Jul 2006 00:29:51 -0600 Subject: [wxqc] Weatherlink 5.7 In-Reply-To: Message-ID: <001401c6a321$179c10f0$0c01a8c0@drlee.com> VP Live does not cause com port problems with one port to the console. You install the Davis software then install VP Live and configure it so when it starts up it reads the archive files from the davis and then set the time between when vp Live releases the port and starts the davis Software to down load data from the console to the archive. When the davis software is done with the download it releases the port as it quits and the VP Live software again has the port to the console. So there is ZERO cost with this prodict runnubg with davis software as the VP Live acts as the controlling and queing the runnung ov the davis software in the background. N5IHE -----Original Message----- From: wxqc-bounces at lists.gladstonefamily.net [mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of Victor Engel Sent: Saturday, July 08, 2006 7:50 PM To: Discussion of weather data quality issues Subject: Re: [wxqc] Weatherlink 5.7 For me that would not be zero cost, because of com port contention. The com sharing software only works on Windows 2000 and Windows XP, I think. There is a commercial product for about $100 that works on other versions of Windows, but I don't have it yet. On 7/8/06, dr. Lee wrote: The only zero cost solution is to use VP Live with Davis software as Weatherlink still does not meet the requirements alone but still needs some help. N5IHE -----Original Message----- From: wxqc-bounces at lists.gladstonefamily.net [mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of Victor Engel Sent: Saturday, July 08, 2006 6:39 PM To: Discussion of weather data quality issues Subject: [wxqc] Weatherlink 5.7 Weatherlink 5.7 was released a couple of months ago. I just upgraded today and notice an anomaly with APRS. The wind gust data no longer seems to be transmitted -- or it is being transmitted as zeroes. Prior to the upgrade, I had my software set to 1 minute gust/5 minute mean. I did not change the setting, which no longer seems to be available. The release notes say the software was changed to send 2 minute gust and 20 minute mean. If anyone else is using Weatherlink 5.7 to update APRS data, I'd like to get some confirmation of this and possibly submit a bug report. Of if there's something I can do in setup to ensure gust data is nonzero, let me know what that is. Victor _______________________________________________ wxqc mailing list wxqc at lists.gladstonefamily.net http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc The contents of this message are the responsibility of the author. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060709/353977f8/attachment-0001.html From brillig at gmail.com Sun Jul 9 11:09:39 2006 From: brillig at gmail.com (Victor Engel) Date: Sun, 9 Jul 2006 10:09:39 -0500 Subject: [wxqc] Calibrating anemometers In-Reply-To: <44B0990C.5000502@tamu.edu> References: <44B08643.5050309@tamu.edu> <44B0990C.5000502@tamu.edu> Message-ID: I report to CWOP, but it hasn't been long enough for a quality check yet. My neighbor does not. Yes, the nearby red oak is big enough to shelter from the wind. I think I'll take our data and do a statistical analysis on our differences by wind direction. If it's a shelter anomaly, we each should have directions that register higher than the other, I would think. Regarding the plot that you suggest, how would you recommend doing that? On 7/9/06, Gerry Creager N5JXS wrote: > > thanks fo rthe map/aerial photo reference. Makes this a *little* easier. > > Victor Engel wrote: > > Thank you for the reply. > > > > Here is a brief description of the siting. If you want, go to > > > http://www.wunderground.com/stationmaps/gmap.asp?zip=78757&magic=1&wmo=99999 > > < > http://www.wunderground.com/stationmaps/gmap.asp?zip=78757&magic=1&wmo=99999 > > > > and zoom in as far as possible while keeping North Allandale and North > > Central Austin SKYWARN in the picture. Then click on Satellite to see > > the buildings, trees, etc. Our stations are the two closest together on > > the map. In fact, you have to zoom in considerably before the symbols > > stop overlapping. > > > > Mine is the north one, North Allandale. The anemometer is mounted on a > > pole 12 feet above my two storey house. The house is 28 feet tall. It's > > mounted on the northernmost peak of the second storey, just northwest of > > a large red oak (casting its shadow on the street). My neighbor's unit > > is mounted on a taller pole over a single storey house two doors south > > of my house. It's actually one house north of where the symbol > > indicates. His house is surrounded by trees, but they are short trees > > (I'm not sure whether they taller than the pole or not). Both our units > > are at 40 feet. My pole extends farther if I want it to, but I wanted > > the same height for now (from the ground -- I think the ground is > > slightly higher at my house). > > The overhead imagery suggests the red oak you identified near your > instrument is taller and provides a significant section of blockage in > azimuth. The predominant wind in central Texas (I'm in College Station) > is generally from the southeast. Your tree is potentially shielding you > and giving you lower readings. It'd be hard for me to be certain > without visiting and doing a site survey. You might want to draw a plot > of obstructions to your anemometer and see if that's the only problem. > > > My equipment is brand new, having been installed less than a month. In > > fact, tomorrow I am reinstalling the anemometer pole, because it's > > slightly tilted (perhaps by 3 degrees or so). We also both have Davis > > Vantage Pros, but his is wired, and mine is wireless. And he's running > > different software than I am. I don't know how much difference the > > software would make. > > One would hope it's not a software glitch. May be, however. I just > can't say. > > > I believe my neighbor's equipment is several years old. It was installed > > when I moved into the neighborhood over 3 years ago, and I think it was > > up for some time before that. > > Off the top, then, I'd expect yours to register more sensitivity than > his... > > > You may also notice temperature differences that are significant during > > the day. I have a fan aspirated shelter. I don't think my neighbor does, > > and he has told me that his temperatures are too high due to a > > restriction in siting caused by a limitation imposed by cable length. > > If both of you are reporting to CWOP I can check these easily. > > > Anyway, I don't intend to make any adjustments any time soon. But his > > will frequently register a breeze when mine doesn't register anything. > > That makes me wonder if something is adjusted too tight or if I screwed > > up attaching the cups somehow. I don't see what I could have screwed up, > > though. Is there a period of time before lubrication gets broken in? I > > wouldn't expect so. > > Lubricants tend to wear "out" and not "in". I don't know if your > construction practices might have caused a problem, but if you're gonna > have the instrument down, anyway, to reinstall its pole, you might want > to conduct a brief inspection to see if there are any obvious anomalies. > > gerry > > > On 7/8/06, *Gerry Creager N5JXS* > > wrote: > > > > Having followed a bit of this (I've been missing in action on > vacation) > > the obvious question arises: What are the similarities and > differences > > in instrument siting? Are you measuring at the same heights above > > ground? Is your anemometer shielded by buildings or trees preventing > it > > from seeing higher readings (I know my station suffers from this). > > Calibrating (or making ad hoc changes to cal'd instruments) is a > step > > one shouldn't undertake lightly. Dr. Lee's comment about sending it > > back to Davis makes the most sense if you're worried about cal. > > > > You also fail to mention the age of the instrument and whether > casual > > inspection suggests the device may have suffered normal wear that > could > > cause performance degradation. > > > > Gerry > > > > Victor Engel wrote: > > > What techniques do people use to calibrate anemometers? My > > neighbor and > > > I each have a Davis Vantage Pro anemometer, and his readings are > > usually > > > higher than mine. Wind gusts, especially, are stronger on his. My > > wind > > > direction sensor, however, seems to be more sensitive than his. > > > > > > Victor > > > > > > > > > > > > ------------------------------------------------------------------------ > > > > > > _______________________________________________ > > > wxqc mailing list > > > wxqc at lists.gladstonefamily.net > > > > > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > > > > > > > The contents of this message are the responsibility of the > author. > > > > -- > > Gerry Creager -- gerry.creager at tamu.edu gerry.creager at tamu.edu> > > Texas Mesonet -- AATLT, Texas A&M University > > Cell: 979.229.5301 Office: 979.458.4020 FAX: 979.862.3983 > > Office: 1700 Research Parkway Ste 160, TAMU, College Station, TX > 77843 > > _______________________________________________ > > wxqc mailing list > > wxqc at lists.gladstonefamily.net wxqc at lists.gladstonefamily.net> > > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > > > The contents of this message are the responsibility of the author. > > > > > > > > ------------------------------------------------------------------------ > > > > _______________________________________________ > > wxqc mailing list > > wxqc at lists.gladstonefamily.net > > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > > > The contents of this message are the responsibility of the author. > > -- > Gerry Creager -- gerry.creager at tamu.edu > Texas Mesonet -- AATLT, Texas A&M University > Cell: 979.229.5301 Office: 979.458.4020 FAX: 979.862.3983 > Office: 1700 Research Parkway Ste 160, TAMU, College Station, TX 77843 > _______________________________________________ > wxqc mailing list > wxqc at lists.gladstonefamily.net > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > The contents of this message are the responsibility of the author. > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060709/0daf3a6e/attachment.html From brillig at gmail.com Sun Jul 9 11:12:22 2006 From: brillig at gmail.com (Victor Engel) Date: Sun, 9 Jul 2006 10:12:22 -0500 Subject: [wxqc] Weatherlink 5.7 In-Reply-To: <001401c6a321$179c10f0$0c01a8c0@drlee.com> References: <001401c6a321$179c10f0$0c01a8c0@drlee.com> Message-ID: OK. Thanks. I didn't know if Davis released the port or not. Since I've already installed VP Live, I'll take some time today to make sure it's set up properly. I tried it out briefly, and it wasn't updating APRS, so I figured there was a port contention. Given what you've stated, it's probably a setup issue. On 7/9/06, dr. Lee wrote: > > VP Live does not cause com port problems with one port to the console. > You install the Davis software then install VP Live and configure it so when > it starts up it reads the archive files from the davis and then set the time > between when vp Live releases the port and starts the davis Software to down > load data from the console to the archive. When the davis software is done > with the download it releases the port as it quits and the VP Live software > again has the port to the console. So there is ZERO cost with this prodict > runnubg with davis software as the VP Live acts as the controlling and > queing the runnung ov the davis software in the background. > > N5IHE > > -----Original Message----- > *From:* wxqc-bounces at lists.gladstonefamily.net [mailto: > wxqc-bounces at lists.gladstonefamily.net] *On Behalf Of *Victor Engel > *Sent:* Saturday, July 08, 2006 7:50 PM > *To:* Discussion of weather data quality issues > *Subject:* Re: [wxqc] Weatherlink 5.7 > > For me that would not be zero cost, because of com port contention. The > com sharing software only works on Windows 2000 and Windows XP, I think. > There is a commercial product for about $100 that works on other versions of > Windows, but I don't have it yet. > > On 7/8/06, dr. Lee wrote: > > > > The only zero cost solution is to use VP Live with Davis software as > > Weatherlink still does not meet the requirements alone but still needs some > > help. > > > > N5IHE > > > > -----Original Message----- > > *From:* wxqc-bounces at lists.gladstonefamily.net [mailto: > > wxqc-bounces at lists.gladstonefamily.net] *On Behalf Of *Victor Engel > > *Sent:* Saturday, July 08, 2006 6:39 PM > > *To:* Discussion of weather data quality issues > > *Subject:* [wxqc] Weatherlink 5.7 > > > > Weatherlink 5.7 was released a couple of months ago. I just upgraded > > today and notice an anomaly with APRS. The wind gust data no longer seems to > > be transmitted -- or it is being transmitted as zeroes. > > > > Prior to the upgrade, I had my software set to 1 minute gust/5 minute > > mean. I did not change the setting, which no longer seems to be available. > > The release notes say the software was changed to send 2 minute gust and 20 > > minute mean. > > > > If anyone else is using Weatherlink 5.7 to update APRS data, I'd like to > > get some confirmation of this and possibly submit a bug report. Of if > > there's something I can do in setup to ensure gust data is nonzero, let me > > know what that is. > > > > Victor > > > > > > _______________________________________________ > > wxqc mailing list > > wxqc at lists.gladstonefamily.net > > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > > > The contents of this message are the responsibility of the author. > > > > > > _______________________________________________ > wxqc mailing list > wxqc at lists.gladstonefamily.net > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > The contents of this message are the responsibility of the author. > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060709/8fc67585/attachment-0001.html From gerry.creager at tamu.edu Sun Jul 9 11:24:12 2006 From: gerry.creager at tamu.edu (Gerry Creager N5JXS) Date: Sun, 09 Jul 2006 10:24:12 -0500 Subject: [wxqc] Calibrating anemometers In-Reply-To: References: <44B08643.5050309@tamu.edu> <44B0990C.5000502@tamu.edu> Message-ID: <44B11F9C.30501@tamu.edu> Victor Engel wrote: > I report to CWOP, but it hasn't been long enough for a quality check > yet. My neighbor does not. Yes, the nearby red oak is big enough to > shelter from the wind. I think I'll take our data and do a statistical > analysis on our differences by wind direction. If it's a shelter > anomaly, we each should have directions that register higher than the > other, I would think. Should shed some light on the problem. > Regarding the plot that you suggest, how would you recommend doing that? I'd make a drawing of the house... or start with an even bigger blowup of the neighborhood. Travis Co. has some of that on-line; check for the DRGs at http://www.tnris.state.tx.us in the Digital Data area. Measure distances from the instrument to each obstruction and note the shading/shadowing the obstruction causes. Then you'll have a better idea of what can cause you problems. You're in an urban environment. I strongly recommend you look at this document: http://www.wmo.ch/web/www/IMOP/publications/IOM-81/IOM-81-UrbanMetObs.pdf for info on instrument siting in complex urban settings. Gerry > On 7/9/06, *Gerry Creager N5JXS* < gerry.creager at tamu.edu > > wrote: > > thanks fo rthe map/aerial photo reference. Makes this a *little* > easier. > > Victor Engel wrote: > > Thank you for the reply. > > > > Here is a brief description of the siting. If you want, go to > > > http://www.wunderground.com/stationmaps/gmap.asp?zip=78757&magic=1&wmo=99999 > > > > > > > and zoom in as far as possible while keeping North Allandale and > North > > Central Austin SKYWARN in the picture. Then click on Satellite to see > > the buildings, trees, etc. Our stations are the two closest > together on > > the map. In fact, you have to zoom in considerably before the symbols > > stop overlapping. > > > > Mine is the north one, North Allandale. The anemometer is mounted > on a > > pole 12 feet above my two storey house. The house is 28 feet > tall. It's > > mounted on the northernmost peak of the second storey, just > northwest of > > a large red oak (casting its shadow on the street). My neighbor's > unit > > is mounted on a taller pole over a single storey house two doors > south > > of my house. It's actually one house north of where the symbol > > indicates. His house is surrounded by trees, but they are short trees > > (I'm not sure whether they taller than the pole or not). Both our > units > > are at 40 feet. My pole extends farther if I want it to, but I wanted > > the same height for now (from the ground -- I think the ground is > > slightly higher at my house). > > The overhead imagery suggests the red oak you identified near your > instrument is taller and provides a significant section of blockage in > azimuth. The predominant wind in central Texas (I'm in College Station) > is generally from the southeast. Your tree is potentially shielding > you > and giving you lower readings. It'd be hard for me to be certain > without visiting and doing a site survey. You might want to draw a plot > of obstructions to your anemometer and see if that's the only problem. > > > My equipment is brand new, having been installed less than a > month. In > > fact, tomorrow I am reinstalling the anemometer pole, because it's > > slightly tilted (perhaps by 3 degrees or so). We also both have > Davis > > Vantage Pros, but his is wired, and mine is wireless. And he's > running > > different software than I am. I don't know how much difference the > > software would make. > > One would hope it's not a software glitch. May be, however. I just > can't say. > > > I believe my neighbor's equipment is several years old. It was > installed > > when I moved into the neighborhood over 3 years ago, and I think > it was > > up for some time before that. > > Off the top, then, I'd expect yours to register more sensitivity > than his... > > > You may also notice temperature differences that are significant > during > > the day. I have a fan aspirated shelter. I don't think my > neighbor does, > > and he has told me that his temperatures are too high due to a > > restriction in siting caused by a limitation imposed by cable length. > > If both of you are reporting to CWOP I can check these easily. > > > Anyway, I don't intend to make any adjustments any time soon. But his > > will frequently register a breeze when mine doesn't register > anything. > > That makes me wonder if something is adjusted too tight or if I > screwed > > up attaching the cups somehow. I don't see what I could have > screwed up, > > though. Is there a period of time before lubrication gets broken > in? I > > wouldn't expect so. > > Lubricants tend to wear "out" and not "in". I don't know if your > construction practices might have caused a problem, but if you're gonna > have the instrument down, anyway, to reinstall its pole, you might want > to conduct a brief inspection to see if there are any obvious > anomalies. > > gerry > > > On 7/8/06, *Gerry Creager N5JXS* > > >> > wrote: > > > > Having followed a bit of this (I've been missing in action on > vacation) > > the obvious question arises: What are the similarities and > differences > > in instrument siting? Are you measuring at the same heights > above > > ground? Is your anemometer shielded by buildings or trees > preventing it > > from seeing higher readings (I know my station suffers from > this). > > Calibrating (or making ad hoc changes to cal'd instruments) > is a step > > one shouldn't undertake lightly. Dr. Lee's comment about > sending it > > back to Davis makes the most sense if you're worried about cal. > > > > You also fail to mention the age of the instrument and > whether casual > > inspection suggests the device may have suffered normal wear > that could > > cause performance degradation. > > > > Gerry > > > > Victor Engel wrote: > > > What techniques do people use to calibrate anemometers? My > > neighbor and > > > I each have a Davis Vantage Pro anemometer, and his > readings are > > usually > > > higher than mine. Wind gusts, especially, are stronger on > his. My > > wind > > > direction sensor, however, seems to be more sensitive than > his. > > > > > > Victor > > > > > > > > > > > > ------------------------------------------------------------------------ > > > > > > > _______________________________________________ > > > wxqc mailing list > > > wxqc at lists.gladstonefamily.net > > > > > > > > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > > > > > > > > The contents of this message are the responsibility of the > author. > > > > -- > > Gerry Creager -- gerry.creager at tamu.edu > > > > Texas Mesonet -- AATLT, Texas A&M University > > Cell: 979.229.5301 Office: 979.458.4020 FAX: 979.862.3983 > > Office: 1700 Research Parkway Ste 160, TAMU, College Station, > TX 77843 > > _______________________________________________ > > wxqc mailing list > > wxqc at lists.gladstonefamily.net > > > > > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > > > The contents of this message are the responsibility of the > author. > > > > > > > > > ------------------------------------------------------------------------ > > > > > _______________________________________________ > > wxqc mailing list > > wxqc at lists.gladstonefamily.net > > > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > > > The contents of this message are the responsibility of the author. > > -- > Gerry Creager -- gerry.creager at tamu.edu > Texas Mesonet -- AATLT, Texas A&M University > Cell: 979.229.5301 Office: 979.458.4020 FAX: 979.862.3983 > Office: 1700 Research Parkway Ste 160, TAMU, College Station, TX 77843 > _______________________________________________ > wxqc mailing list > wxqc at lists.gladstonefamily.net > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > > The contents of this message are the responsibility of the author. > > > > ------------------------------------------------------------------------ > > _______________________________________________ > wxqc mailing list > wxqc at lists.gladstonefamily.net > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > The contents of this message are the responsibility of the author. -- Gerry Creager -- gerry.creager at tamu.edu Texas Mesonet -- AATLT, Texas A&M University Cell: 979.229.5301 Office: 979.458.4020 FAX: 979.862.3983 Office: 1700 Research Parkway Ste 160, TAMU, College Station, TX 77843 From brillig at gmail.com Sun Jul 9 11:48:58 2006 From: brillig at gmail.com (Victor Engel) Date: Sun, 9 Jul 2006 10:48:58 -0500 Subject: [wxqc] Calibrating anemometers In-Reply-To: <44B11F9C.30501@tamu.edu> References: <44B08643.5050309@tamu.edu> <44B0990C.5000502@tamu.edu> <44B11F9C.30501@tamu.edu> Message-ID: Thanks for the links. I've got some reading ahead of me. I suspect it's quite unlikely that I'll find a better site location for an anemometer on my property than what I'm using, with the exception of putting it higher. My pole actually extends higher than it is now, but I've kept it at 40 feet because I have the impression (perhaps misguided) that local ordinance so dictates. That's more reading ahead of me. On 7/9/06, Gerry Creager N5JXS wrote: > > Victor Engel wrote: > > I report to CWOP, but it hasn't been long enough for a quality check > > yet. My neighbor does not. Yes, the nearby red oak is big enough to > > shelter from the wind. I think I'll take our data and do a statistical > > analysis on our differences by wind direction. If it's a shelter > > anomaly, we each should have directions that register higher than the > > other, I would think. > > Should shed some light on the problem. > > > Regarding the plot that you suggest, how would you recommend doing that? > > I'd make a drawing of the house... or start with an even bigger blowup > of the neighborhood. Travis Co. has some of that on-line; check for the > DRGs at http://www.tnris.state.tx.us in the Digital Data area. Measure > distances from the instrument to each obstruction and note the > shading/shadowing the obstruction causes. Then you'll have a better > idea of what can cause you problems. > > You're in an urban environment. I strongly recommend you look at this > document: > http://www.wmo.ch/web/www/IMOP/publications/IOM-81/IOM-81-UrbanMetObs.pdf > for info on instrument siting in complex urban settings. > > Gerry > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060709/9ed26d1f/attachment.html From brillig at gmail.com Sun Jul 9 12:33:09 2006 From: brillig at gmail.com (Victor Engel) Date: Sun, 9 Jul 2006 11:33:09 -0500 Subject: [wxqc] Weatherlink 5.7 In-Reply-To: <001401c6a321$179c10f0$0c01a8c0@drlee.com> References: <001401c6a321$179c10f0$0c01a8c0@drlee.com> Message-ID: OK. I've got it to work so that VP Live callse Weatherlink to download data from the console, and VP Live updates CWOP, but Weatherlink does NOT update weather underground. If I start weatherlink first, VP live cannot open the port. On 7/9/06, dr. Lee wrote: > > VP Live does not cause com port problems with one port to the console. > You install the Davis software then install VP Live and configure it so when > it starts up it reads the archive files from the davis and then set the time > between when vp Live releases the port and starts the davis Software to down > load data from the console to the archive. When the davis software is done > with the download it releases the port as it quits and the VP Live software > again has the port to the console. So there is ZERO cost with this prodict > runnubg with davis software as the VP Live acts as the controlling and > queing the runnung ov the davis software in the background. > > N5IHE > > -----Original Message----- > *From:* wxqc-bounces at lists.gladstonefamily.net [mailto: > wxqc-bounces at lists.gladstonefamily.net] *On Behalf Of *Victor Engel > *Sent:* Saturday, July 08, 2006 7:50 PM > *To:* Discussion of weather data quality issues > *Subject:* Re: [wxqc] Weatherlink 5.7 > > For me that would not be zero cost, because of com port contention. The > com sharing software only works on Windows 2000 and Windows XP, I think. > There is a commercial product for about $100 that works on other versions of > Windows, but I don't have it yet. > > On 7/8/06, dr. Lee wrote: > > > > The only zero cost solution is to use VP Live with Davis software as > > Weatherlink still does not meet the requirements alone but still needs some > > help. > > > > N5IHE > > > > -----Original Message----- > > *From:* wxqc-bounces at lists.gladstonefamily.net [mailto: > > wxqc-bounces at lists.gladstonefamily.net] *On Behalf Of *Victor Engel > > *Sent:* Saturday, July 08, 2006 6:39 PM > > *To:* Discussion of weather data quality issues > > *Subject:* [wxqc] Weatherlink 5.7 > > > > Weatherlink 5.7 was released a couple of months ago. I just upgraded > > today and notice an anomaly with APRS. The wind gust data no longer seems to > > be transmitted -- or it is being transmitted as zeroes. > > > > Prior to the upgrade, I had my software set to 1 minute gust/5 minute > > mean. I did not change the setting, which no longer seems to be available. > > The release notes say the software was changed to send 2 minute gust and 20 > > minute mean. > > > > If anyone else is using Weatherlink 5.7 to update APRS data, I'd like to > > get some confirmation of this and possibly submit a bug report. Of if > > there's something I can do in setup to ensure gust data is nonzero, let me > > know what that is. > > > > Victor > > > > > > _______________________________________________ > > wxqc mailing list > > wxqc at lists.gladstonefamily.net > > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > > > The contents of this message are the responsibility of the author. > > > > > > _______________________________________________ > wxqc mailing list > wxqc at lists.gladstonefamily.net > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > The contents of this message are the responsibility of the author. > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060709/ff4564d5/attachment.html From brillig at gmail.com Sun Jul 9 14:48:55 2006 From: brillig at gmail.com (Victor Engel) Date: Sun, 9 Jul 2006 13:48:55 -0500 Subject: [wxqc] Calibrating anemometers In-Reply-To: <44B13E58.7000003@tamu.edu> References: <44B08643.5050309@tamu.edu> <44B0990C.5000502@tamu.edu> <44B11F9C.30501@tamu.edu> <44B13E58.7000003@tamu.edu> Message-ID: After preliminary data analysis, it seems my initial impressions may have been faulty. Here are the results of my analysis. In this first report, I list mean DIFSPEED (my neighbor's reported speed minus my reported speed) for each of the coded directions. Apparently, my wind readings are actually higher than his. Units are miles per hour. DIFSPEED WindDirection -1.46 North -.36 NNE -.37 NE -.33 ENE -.69 East -.16 ESE -1.17 SE -1.01 SSE -.84 South -.33 SSW -.37 SW -.91 WSW -1.17 West .13 WNW -1.16 NW -.29 NNW -.70 AVERAGE On the other hand, his speeds are higher for wind gust data. I think that is where I got the impression his readings were higher. 1.83 North 1.57 NNE 1.55 NE 1.38 ENE 1.69 East 1.72 ESE 1.03 SE 1.49 SSE 1.47 South 1.49 SSW 1.59 SW .35 WSW -.04 West .40 WNW 1.79 NW 1.82 NNW 1.47 AVERAGE Finally, here is a count of total data points used for these statistics. North 83 NNE 96 NE 119 ENE 176 East 166 ESE 98 SE 147 SSE 270 South 169 SSW 45 SW 46 WSW 34 West 23 WNW 15 NW 43 NNW 99 TOTAL 1629 Something that probably skews the top chart a little bit is that I only selected data for which windspeed was nonzero at my station. Here is the procedure I used: I downloaded all weatherunderground data (CSV charts) for our two weather stations over the period of time my station has been active. Since the times are sometimes every minute and sometimes every five minutes, I took only the first data points on or after 5 minute boundaries. Then, I selected only data for which both stations had values for the timeframe. I wonder if my setup is missing wind gusts for some reason or other. If the Davis WIND station itself does not keep track of gusts, then gusts would have to be captured by software, and gaps between readings could possibly miss gusts. Victor -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060709/8c7ad1f5/attachment.html From drlee6530 at drlee.com Sun Jul 9 17:00:36 2006 From: drlee6530 at drlee.com (dr. Lee) Date: Sun, 9 Jul 2006 15:00:36 -0600 Subject: [wxqc] Weatherlink 5.7 In-Reply-To: Message-ID: <001e01c6a39a$bf123390$0c01a8c0@drlee.com> This is my current setup. Please feel free to ask additional questions as required. N5IHE -----Original Message----- From: wxqc-bounces at lists.gladstonefamily.net [mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of Victor Engel Sent: Sunday, July 09, 2006 9:12 AM To: Discussion of weather data quality issues Subject: Re: [wxqc] Weatherlink 5.7 OK. Thanks. I didn't know if Davis released the port or not. Since I've already installed VP Live, I'll take some time today to make sure it's set up properly. I tried it out briefly, and it wasn't updating APRS, so I figured there was a port contention. Given what you've stated, it's probably a setup issue. On 7/9/06, dr. Lee wrote: VP Live does not cause com port problems with one port to the console. You install the Davis software then install VP Live and configure it so when it starts up it reads the archive files from the davis and then set the time between when vp Live releases the port and starts the davis Software to down load data from the console to the archive. When the davis software is done with the download it releases the port as it quits and the VP Live software again has the port to the console. So there is ZERO cost with this prodict runnubg with davis software as the VP Live acts as the controlling and queing the runnung ov the davis software in the background. N5IHE -----Original Message----- From: wxqc-bounces at lists.gladstonefamily.net [mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of Victor Engel Sent: Saturday, July 08, 2006 7:50 PM To: Discussion of weather data quality issues Subject: Re: [wxqc] Weatherlink 5.7 For me that would not be zero cost, because of com port contention. The com sharing software only works on Windows 2000 and Windows XP, I think. There is a commercial product for about $100 that works on other versions of Windows, but I don't have it yet. On 7/8/06, dr. Lee wrote: The only zero cost solution is to use VP Live with Davis software as Weatherlink still does not meet the requirements alone but still needs some help. N5IHE -----Original Message----- From: wxqc-bounces at lists.gladstonefamily.net [mailto: wxqc-bounces at lists.gladstonefamily.net] On Behalf Of Victor Engel Sent: Saturday, July 08, 2006 6:39 PM To: Discussion of weather data quality issues Subject: [wxqc] Weatherlink 5.7 Weatherlink 5.7 was released a couple of months ago. I just upgraded today and notice an anomaly with APRS. The wind gust data no longer seems to be transmitted -- or it is being transmitted as zeroes. Prior to the upgrade, I had my software set to 1 minute gust/5 minute mean. I did not change the setting, which no longer seems to be available. The release notes say the software was changed to send 2 minute gust and 20 minute mean. If anyone else is using Weatherlink 5.7 to update APRS data, I'd like to get some confirmation of this and possibly submit a bug report. Of if there's something I can do in setup to ensure gust data is nonzero, let me know what that is. Victor _______________________________________________ wxqc mailing list wxqc at lists.gladstonefamily.net http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc The contents of this message are the responsibility of the author. _______________________________________________ wxqc mailing list wxqc at lists.gladstonefamily.net http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc The contents of this message are the responsibility of the author. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060709/8c31c82b/attachment-0001.html From drlee6530 at drlee.com Sun Jul 9 17:05:30 2006 From: drlee6530 at drlee.com (dr. Lee) Date: Sun, 9 Jul 2006 15:05:30 -0600 Subject: [wxqc] Weatherlink 5.7 In-Reply-To: Message-ID: <002301c6a39b$6b1897b0$0c01a8c0@drlee.com> VP Live is for sending data to APRS only. to send to other sites then you need the vertural port software avalable from the site you got VP Live and it is $30. A bargin and then you will have 4 shared ports from 1 hardware port. N5IHE -----Original Message----- From: wxqc-bounces at lists.gladstonefamily.net [mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of Victor Engel Sent: Sunday, July 09, 2006 10:33 AM To: Discussion of weather data quality issues Subject: Re: [wxqc] Weatherlink 5.7 OK. I've got it to work so that VP Live callse Weatherlink to download data from the console, and VP Live updates CWOP, but Weatherlink does NOT update weather underground. If I start weatherlink first, VP live cannot open the port. On 7/9/06, dr. Lee wrote: VP Live does not cause com port problems with one port to the console. You install the Davis software then install VP Live and configure it so when it starts up it reads the archive files from the davis and then set the time between when vp Live releases the port and starts the davis Software to down load data from the console to the archive. When the davis software is done with the download it releases the port as it quits and the VP Live software again has the port to the console. So there is ZERO cost with this prodict runnubg with davis software as the VP Live acts as the controlling and queing the runnung ov the davis software in the background. N5IHE -----Original Message----- From: wxqc-bounces at lists.gladstonefamily.net [mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of Victor Engel Sent: Saturday, July 08, 2006 7:50 PM To: Discussion of weather data quality issues Subject: Re: [wxqc] Weatherlink 5.7 For me that would not be zero cost, because of com port contention. The com sharing software only works on Windows 2000 and Windows XP, I think. There is a commercial product for about $100 that works on other versions of Windows, but I don't have it yet. On 7/8/06, dr. Lee wrote: The only zero cost solution is to use VP Live with Davis software as Weatherlink still does not meet the requirements alone but still needs some help. N5IHE -----Original Message----- From: wxqc-bounces at lists.gladstonefamily.net [mailto: wxqc-bounces at lists.gladstonefamily.net] On Behalf Of Victor Engel Sent: Saturday, July 08, 2006 6:39 PM To: Discussion of weather data quality issues Subject: [wxqc] Weatherlink 5.7 Weatherlink 5.7 was released a couple of months ago. I just upgraded today and notice an anomaly with APRS. The wind gust data no longer seems to be transmitted -- or it is being transmitted as zeroes. Prior to the upgrade, I had my software set to 1 minute gust/5 minute mean. I did not change the setting, which no longer seems to be available. The release notes say the software was changed to send 2 minute gust and 20 minute mean. If anyone else is using Weatherlink 5.7 to update APRS data, I'd like to get some confirmation of this and possibly submit a bug report. Of if there's something I can do in setup to ensure gust data is nonzero, let me know what that is. Victor _______________________________________________ wxqc mailing list wxqc at lists.gladstonefamily.net http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc The contents of this message are the responsibility of the author. _______________________________________________ wxqc mailing list wxqc at lists.gladstonefamily.net http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc The contents of this message are the responsibility of the author. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060709/33b10f41/attachment.html From deadeye916 at gmail.com Sun Jul 9 17:28:21 2006 From: deadeye916 at gmail.com (Dan Crooks) Date: Sun, 9 Jul 2006 14:28:21 -0700 Subject: [wxqc] Calibrating anemometers In-Reply-To: References: <44B08643.5050309@tamu.edu> <44B0990C.5000502@tamu.edu> <44B11F9C.30501@tamu.edu> <44B13E58.7000003@tamu.edu> Message-ID: Victor, Wind is a funny beast influenced by friction of what it passes over/around. I don't think you should expect your stations to match, be it direction, gust, or other. Same with rain amounts. There are so many things that influence the any particular stations readings that it's impossible to say one station is wrong or right. Your best bet is to get other instruments to cross-check your readings, ie. rain gauge , sling psychrometer, etc. Here is an example of an instrumentI just purchased for use with my station - note that it can be purchased with NIST certification. It doesn't do wind but there are other 'toys' that will measure that for you. Dan On 7/9/06, Victor Engel wrote: > > After preliminary data analysis, it seems my initial impressions may have > been faulty. Here are the results of my analysis. > > In this first report, I list mean DIFSPEED (my neighbor's reported speed > minus my reported speed) for each of the coded directions. Apparently, my > wind readings are actually higher than his. Units are miles per hour. > > DIFSPEED WindDirection > -1.46 North > -.36 NNE > -.37 NE > -.33 ENE > -.69 East > -.16 ESE > -1.17 SE > -1.01 SSE > -.84 South > -.33 SSW > -.37 SW > -.91 WSW > -1.17 West > .13 WNW > -1.16 NW > -.29 NNW > -.70 AVERAGE > > On the other hand, his speeds are higher for wind gust data. I think that > is where I got the impression his readings were higher. > > 1.83 North > 1.57 NNE > 1.55 NE > 1.38 ENE > 1.69 East > 1.72 ESE > 1.03 SE > 1.49 SSE > 1.47 South > 1.49 SSW > 1.59 SW > .35 WSW > -.04 West > .40 WNW > 1.79 NW > 1.82 NNW > 1.47 AVERAGE > > Finally, here is a count of total data points used for these statistics. > > North 83 > NNE 96 > NE 119 > ENE 176 > East 166 > ESE 98 > SE 147 > SSE 270 > South 169 > SSW 45 > SW 46 > WSW 34 > West 23 > WNW 15 > NW 43 > NNW 99 > TOTAL 1629 > > Something that probably skews the top chart a little bit is that I only > selected data for which windspeed was nonzero at my station. Here is the > procedure I used: > > I downloaded all weatherunderground data (CSV charts) for our two weather > stations over the period of time my station has been active. Since the times > are sometimes every minute and sometimes every five minutes, I took only the > first data points on or after 5 minute boundaries. Then, I selected only > data for which both stations had values for the timeframe. > > I wonder if my setup is missing wind gusts for some reason or other. If > the Davis WIND station itself does not keep track of gusts, then gusts would > have to be captured by software, and gaps between readings could possibly > miss gusts. > > Victor > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060709/9734b8ec/attachment-0001.html From spamfree at pensom.org Sun Jul 9 19:45:12 2006 From: spamfree at pensom.org (spamfree at pensom.org) Date: Sun, 9 Jul 2006 17:45:12 -0600 Subject: [wxqc] Calibrating anemometers Message-ID: When comparing wind gust data, be sure you are comparing apples to apples. The wind sensor only reports the windspeed. The definition of wind gust however depends upon the software being used, because wind gust is simply the highest wind speed reading over some period of time. What that period of time is can vary with the software being used. For instance, if his software was using a 10 minute period for gusts, and yours was using a 5 minute period, his would have higher gust speeds on average than yours. Steve -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060709/7719e2ca/attachment.html From brillig at gmail.com Sun Jul 9 20:04:45 2006 From: brillig at gmail.com (Victor Engel) Date: Sun, 9 Jul 2006 19:04:45 -0500 Subject: [wxqc] Calibrating anemometers In-Reply-To: <44b1957e.5f7cc9cd.54ce.78f5SMTPIN_ADDED@mx.gmail.com> References: <44b1957e.5f7cc9cd.54ce.78f5SMTPIN_ADDED@mx.gmail.com> Message-ID: I realize that. He is using different software than I am. Given your argument, though, if the period of time varied, then one station's gust at time x would be another station's gust at time y. His maximum gusts, however, are invariably higher than mine. That could be possible if his software has more samples than mine. I think that's possible since his is a wired system and mine is wireless: I think he gets more samples during the day than I do. On 7/9/06, spamfree at pensom.org wrote: > > When comparing wind gust data, be sure you are comparing apples to > apples. The wind sensor only reports the windspeed. The definition of wind > gust however depends upon the software being used, because wind gust is > simply the highest wind speed reading over some period of time. What that > period of time is can vary with the software being used. For instance, if > his software was using a 10 minute period for gusts, and yours was using a 5 > minute period, his would have higher gust speeds on average than yours. > > Steve > > _______________________________________________ > wxqc mailing list > wxqc at lists.gladstonefamily.net > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > The contents of this message are the responsibility of the author. > > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060709/99e3c406/attachment.html From brillig at gmail.com Sun Jul 9 23:36:32 2006 From: brillig at gmail.com (Victor Engel) Date: Sun, 9 Jul 2006 22:36:32 -0500 Subject: [wxqc] Calibrating anemometers In-Reply-To: References: <44B08643.5050309@tamu.edu> <44B0990C.5000502@tamu.edu> <44B11F9C.30501@tamu.edu> <44B13E58.7000003@tamu.edu> Message-ID: It was a bad idea to eliminate data items with zero speed. I did that originally because direction is undefined for zero speed and I wasn't sure how to handle the situation. I've since decided to do a similar report with the zeroes included. Here are the results: 2.34 North 121 1.71 NNE 129 1.84 NE 151 1.38 ENE 262 1.81 East 303 2.29 ESE 169 1.41 SE 213 1.37 SSE 384 1.49 South 237 1.56 SSW 88 1.68 SW 110 .71 WSW 94 .83 West 35 .63 WNW 24 1.80 NW 56 1.75 NNW 112 1.62 2501 I've finished reseating the pole, and it's quite vertical now. I'll be interested to see what, if any, difference it makes. On 7/9/06, Victor Engel wrote: > > After preliminary data analysis, it seems my initial impressions may have > been faulty. Here are the results of my analysis. > > In this first report, I list mean DIFSPEED (my neighbor's reported speed > minus my reported speed) for each of the coded directions. Apparently, my > wind readings are actually higher than his. Units are miles per hour. > > DIFSPEED WindDirection > -1.46 North > -.36 NNE > -.37 NE > -.33 ENE > -.69 East > -.16 ESE > -1.17 SE > -1.01 SSE > -.84 South > -.33 SSW > -.37 SW > -.91 WSW > -1.17 West > .13 WNW > -1.16 NW > -.29 NNW > -.70 AVERAGE > > On the other hand, his speeds are higher for wind gust data. I think that > is where I got the impression his readings were higher. > > 1.83 North > 1.57 NNE > 1.55 NE > 1.38 ENE > 1.69 East > 1.72 ESE > 1.03 SE > 1.49 SSE > 1.47 South > 1.49 SSW > 1.59 SW > .35 WSW > -.04 West > .40 WNW > 1.79 NW > 1.82 NNW > 1.47 AVERAGE > > Finally, here is a count of total data points used for these statistics. > > North 83 > NNE 96 > NE 119 > ENE 176 > East 166 > ESE 98 > SE 147 > SSE 270 > South 169 > SSW 45 > SW 46 > WSW 34 > West 23 > WNW 15 > NW 43 > NNW 99 > TOTAL 1629 > > Something that probably skews the top chart a little bit is that I only > selected data for which windspeed was nonzero at my station. Here is the > procedure I used: > > I downloaded all weatherunderground data (CSV charts) for our two weather > stations over the period of time my station has been active. Since the times > are sometimes every minute and sometimes every five minutes, I took only the > first data points on or after 5 minute boundaries. Then, I selected only > data for which both stations had values for the timeframe. > > I wonder if my setup is missing wind gusts for some reason or other. If > the Davis WIND station itself does not keep track of gusts, then gusts would > have to be captured by software, and gaps between readings could possibly > miss gusts. > > Victor > -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pond1.gladstonefamily.net:8080/pipermail/wxqc/attachments/20060709/462bb856/attachment.html From andro700 at min.midco.net Mon Jul 10 01:55:31 2006 From: andro700 at min.midco.net (Chuck Goble) Date: Mon, 10 Jul 2006 00:55:31 -0500 Subject: [wxqc] Temp Issue Maybe Message-ID: <44B1EBD3.5020107@min.midco.net> I am new to the forum so be easy with me. I will do my best to describe my issue. I have a Davis VP2 wireless standard version. I am located in Minot, North Dakota. I don't if it is an issue or what. I had my ISS located on a mast on my roof along with the anemometer. The ISS was about 5ft above the roof top and roughly 20 ft. above the ground and my temp readings where within CWOP deviations. Then I relocated my ISS about 4.5 ft above the ground. Then my temp readings are higher and now red x according to CWOP. According to the manual you want it no more than 6 ft above the ground if I remember correctly. There is not a lot of trees around and for the most part it is in an area that gets plenty of breeze when it blows. The couple of questions that I have is I live right in the middle of town wouldn't my temps be a bit higher due to the fact being in the middle of town the heat will dissipate slower so my temps will be higher for the most part. The other two CWOP stations one is on the edge of town and the other one which is the airport is in the wide open area. I'm thinking my temps will be different than theres. My next question is if my temps are high and my humidity is running 4.5% drier why is my dewpoint almost right on. But the graph to me does not look that way. Maybe I am reading the graphs wrong. I hope this is not to long. If I missed anything please let me know and I will get what info you need if I can. Sorry again if this is too long. Thanks, Chuck From drlee6530 at drlee.com Mon Jul 10 02:41:00 2006 From: drlee6530 at drlee.com (dr. Lee) Date: Mon, 10 Jul 2006 00:41:00 -0600 Subject: [wxqc] Temp Issue Maybe In-Reply-To: <44B1EBD3.5020107@min.midco.net> Message-ID: <000001c6a3eb$cea88330$0c01a8c0@drlee.com> Chuck, the national weather service standard for the instrument package except the wind speed instrument is 3m above the ground. The anemometer should be at 33ft above the ground but, no site is perfect. Adjust your software or move the instrument package to a location that works with all graphs. Does your instrument package have a fan that keeps the air moving over the sensors? If you do not have this option on a davis you can and probably will get a higher temp during the day as the sun will warm the cover and the cover will increase the temp of the air inside around the sensors. The graphs are a comparison of all stations in the area you are so if there are other systems in town all would show the increase in temp and this would tend to null out the increase. It still looks like you need a fan to keep the air moving inside of the instrument package to solve your problem. Look at the graph of another station close to you and compare the temps during the day and at night to see if there is a difference and how much there is day and night as day time can again increase the temp inside of the instrument cover unless you have a fan that keeps the air moving thought the unit. N5IHE > -----Original Message----- > From: wxqc-bounces at lists.gladstonefamily.net > [mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of > Chuck Goble > Sent: Sunday, July 09, 2006 11:56 PM > To: wxqc at lists.gladstonefamily.net > Subject: [wxqc] Temp Issue Maybe > > > I am new to the forum so be easy with me. I will do my best > to describe > my issue. I have a Davis VP2 wireless standard version. I am > located in > Minot, North Dakota. I don't if it is an issue or what. I had my ISS > located on a mast on my roof along with the anemometer. The ISS was > about 5ft above the roof top and roughly 20 ft. above the > ground and my > temp readings where within CWOP deviations. Then I relocated my ISS > about 4.5 ft above the ground. Then my temp readings are > higher and now > red x according to CWOP. According to the manual you want it no more > than 6 ft above the ground if I remember correctly. There is > not a lot > of trees around and for the most part it is in an area that > gets plenty > of breeze when it blows. > > The couple of questions that I have is I live right in the middle of > town wouldn't my temps be a bit higher due to the fact being in the > middle of town the heat will dissipate slower so my temps > will be higher > for the most part. The other two CWOP stations one is on the edge of > town and the other one which is the airport is in the wide open area. > I'm thinking my temps will be different than theres. My next > question is > if my temps are high and my humidity is running 4.5% drier why is my > dewpoint almost right on. But the graph to me does not look that way. > Maybe I am reading the graphs wrong. > > I hope this is not to long. If I missed anything please let > me know and > I will get what info you need if I can. Sorry again if this > is too long. > > Thanks, > Chuck > _______________________________________________ > wxqc mailing list > wxqc at lists.gladstonefamily.net > http://pond1.gladstonefamily.net:8080/mailman/listinfo/wxqc > > The contents of this message are the responsibility of the author. > From andro700 at min.midco.net Mon Jul 10 19:27:55 2006 From: andro700 at min.midco.net (Chuck Goble) Date: Mon, 10 Jul 2006 18:27:55 -0500 Subject: [wxqc] Temp Issue Maybe In-Reply-To: <000001c6a3eb$cea88330$0c01a8c0@drlee.com> References: <000001c6a3eb$cea88330$0c01a8c0@drlee.com> Message-ID: <44B2E27B.60308@min.midco.net> Well I raised my ISS to just under 9 ft. My temps are right with Wunderground and Weather.com and sometimes a bit lower by a degree or two. The fan will have to wait. We had a nice little breeze today out of the southeast which is good because hits my ISS so it helps out a bit. I will see the next couple of days and see how it goes. Thanks dr. Lee for the info. I have had my station up since the end of Nov 2005 so I am still fairly new at this. Chuck dr. Lee wrote: > Chuck, the national weather service standard for the instrument package > except the wind speed instrument is 3m above the ground. The anemometer > should be at 33ft above the ground but, no site is perfect. Adjust your > software or move the instrument package to a location that works with all > graphs. Does your instrument package have a fan that keeps the air moving > over the sensors? If you do not have this option on a davis you can an