[wxqc] Analysis Question

Gerry Creager gerry.creager at tamu.edu
Thu Dec 11 14:47:39 CST 2008


I don't recommend tweaking to match the analysis until you've run for 
some time and can determine that a deviation from analysis results from 
a real problem and not from a microclimate situation where your 
conditions are really different.

I don't think you should have recalibrated.

gerry

Alan Hensley wrote:
>   I find it ironic that new and just out of the box, my Vantage Pro 2 
> station was right in line with the Airport's Metar station, but I get 
> told that I am way out of line with the analysis.  I recalibrate to 
> match the analysis and I am way off from the airport.  The airport is a 
> tad less than 5 miles away.  None of the other reporting members in my 
> area know where the analysis information comes from.  Being I don't see 
> another reporting station in my back yard, I have no clue where the 
> analysis is reporting from either.
>  
> Alan/KE8BP
> 
> 
> 
> From: kl7ifp at msn.com
> To: wxqc at lists.gladstonefamily.net
> Date: Thu, 11 Dec 2008 07:48:17 -0900
> Subject: Re: [wxqc] Analysis Question
> 
>   I find this  Analysis a big joke. I track consistance with 3  airports 
> and a NWS  station all within 20miles of me yet always get bad reports 
> that something wrong even with out touching any thing. There data strip 
> shows big gaps in it. Shut down to update WD and  they come back  with 
> your  so many MB out. But yet mesowest site which is what they feed i 
> believe  shows green tag since i got equipment in line with  the NWS and 
> airports  Metars. It would be more benefical is we knew who they where 
> using to compare us with and how far away they where instead they say 
> only MADIS  knows. That is why I say it is a joke. they critique you but 
> yet  you don't know who  they are using. heck it migth be a station in 
> NY and I am in Alaska  for all I know. Give us the data back so we can 
> see  who we are being compared with.
>  
>  Another thing I notice with stations listed  at bottom of the page some 
> are maritime staion only listing air or water temp, incomplete  data, 
> and some are airports but nothing constisted in the reading crteria from 
> them. Are they what we are compared to
>  
>  
> John
> DW1453
>  
> 
>  > From: wxqc-request at lists.gladstonefamily.net
>  > Subject: wxqc Digest, Vol 50, Issue 6
>  > To: wxqc at lists.gladstonefamily.net
>  > Date: Wed, 10 Dec 2008 20:37:44 -0600
>  >
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>  >
>  > Today's Topics:
>  >
>  > 1. Re: Analysis Question (Mike Bates)
>  > 2. Re: Analysis Question (Alan Hensley)
>  > 3. Re: Analysis Question (Joe Niederhofer)
>  > 4. Re: Analysis Question (Mike Bates)
>  > 5. Re: Analysis Question (Alan Hensley)
>  > 6. Solar heating on cloudy days (Derek McIntyre N4DBM)
>  > 7. Humidity Jumps Normal? (Derek McIntyre N4DBM)
>  >
>  >
>  > ----------------------------------------------------------------------
>  >
>  > Message: 1
>  > Date: Wed, 10 Dec 2008 12:53:50 -0700
>  > From: Mike Bates <n7dq at comcast.net>
>  > Subject: Re: [wxqc] Analysis Question
>  > To: Discussion of weather data quality issues
>  > <wxqc at lists.gladstonefamily.net>
>  > Message-ID: <49401E4E.9040904 at comcast.net>
>  > Content-Type: text/plain; charset=ISO-8859-1
>  >
>  > -----BEGIN PGP SIGNED MESSAGE-----
>  > Hash: SHA1
>  >
>  > Alan,
>  >
>  > What software are you using? I have found that I had to get the
>  > software setup as well as the Davis Pro console setup correctly first,
>  > once I did that things came into alignment.
>  >
>  > Mike
>  >
>  > Alan Hensley wrote:
>  > > .hmmessage P { margin:0px; padding:0px } body.hmmessage { font-size:
>  > > 10pt; font-family:Verdana }
>  > > After calibrating my Davis Vantage Pro 2 to match the analysis, I
>  > > think the analysis is off. I am only 5 miles from Haleyville
>  > > Airport's expensive Metar reporting equipment. But I am getting an
>  > > error from the CWOP analysis for some of my readings. My question
>  > > is, how are these analysis determined? Not only are my readings in
>  > > line with the Metar reporting station, they are also
>  > > within tolerances with most of the nearby reporting stations listed
>  > > at the bottom of the report.
>  > >
>  > > Alan
>  > >
>  > > ----------------------------------------------------------------------
>  > > Send e-mail faster without improving your typing skills. Get your
>  > > Hotmail? account.
>  > > 
> <http://windowslive.com/Explore/hotmail?ocid=TXT_TAGLM_WL_hotmail_acq_speed_122008>
>  > >
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>  >
>  > ------------------------------
>  >
>  > Message: 2
>  > Date: Wed, 10 Dec 2008 14:17:57 -0600
>  > From: Alan Hensley <ke8bp at hotmail.com>
>  > Subject: Re: [wxqc] Analysis Question
>  > To: <wxqc at lists.gladstonefamily.net>
>  > Message-ID: <BAY138-W3796C6585EC28C0F28E49BEBFB0 at phx.gbl>
>  > Content-Type: text/plain; charset="iso-8859-1"
>  >
>  >
>  > Mike, I am using WeatherLink 5.8.1 Mike,
>  > Alan> Date: Wed, 10 Dec 2008 12:53:50 -0700> From: n7dq at comcast.net> 
> To: wxqc at lists.gladstonefamily.net> Subject: Re: [wxqc] Analysis 
> Question> > -----BEGIN PGP SIGNED MESSAGE-----> Hash: SHA1> > Alan,> > 
> What software are you using? I have found that I had to get the> 
> software setup as well as the Davis Pro console setup correctly first,> 
> once I did that things came into alignment.> > Mike> > Alan Hensley 
> wrote:> > .hmmessage P { margin:0px; padding:0px } body.hmmessage { 
> font-size:> > 10pt; font-family:Verdana }> > After calibrating my Davis 
> Vantage Pro 2 to match the analysis, I> > think the analysis is off. I 
> am only 5 miles from Haleyville> > Airport's expensive Metar reporting 
> equipment. But I am getting an> > error from the CWOP analysis for some 
> of my readings. My question> > is, how are these analysis determined? 
> Not only are my readings in> > line with the Metar reporting station, 
> they are also> > within tolerances with most of the nearby reporting 
> stations listed> > at the bottom of the report.> > > > Alan> >> > 
> ----------------------------------------------------------------------> 
>  > Send e-mail faster without improving your typing skills. Get your> > 
> Hotmail? account.> > 
> <http://windowslive.com/Explore/hotmail?ocid=TXT_TAGLM_WL_hotmail_acq_speed_122008>> 
>  >> > 
> ----------------------------------------------------------------------> 
>  >> > _______________________________________________> > wxqc mailing 
> list> > Post messages to wxqc at lists.gladstonefamily.net> > To unsubcribe 
> or change delivery options, please go to:> > 
> http://server.gladstonefamily.net/mailman/listinfo/wxqc> > To search the 
> archives:> 
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> _______________________________________________> wxqc mailing list> Post 
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>  > ------------------------------
>  >
>  > Message: 3
>  > Date: Wed, 10 Dec 2008 14:19:23 -0600
>  > From: "Joe Niederhofer" <joe.niederhofer at rhutasel.net>
>  > Subject: Re: [wxqc] Analysis Question
>  > To: "Discussion of weather data quality issues"
>  > <wxqc at lists.gladstonefamily.net>
>  > Message-ID: <07FC308BC0184A2F9C53D69B6FA51A7F at JOE>
>  > Content-Type: text/plain; format=flowed; charset="iso-8859-1";
>  > reply-type=original
>  >
>  > I am having a similar issue. Fairly new station, everything was 
> pretty much
>  > dead on, until the local airport's info started going "wrong"
>  >
>  > Airport http://weather.gladstonefamily.net/site/KENL
>  >
>  > Mine http://weather.gladstonefamily.net/site/D1376
>  >
>  > I'm hesitant to change anything until their analysis gets closer.
>  >
>  > Davis VP2, VWS, V14, P39 (I think)
>  >
>  > Joe
>  > PS Not sure I am using this email properly. First timer. Please don't
>  > flame.
>  >
>  >
>  >
>  > ----- Original Message -----
>  > From: "Mike Bates" <n7dq at comcast.net>
>  > To: "Discussion of weather data quality issues"
>  > <wxqc at lists.gladstonefamily.net>
>  > Sent: Wednesday, December 10, 2008 1:53 PM
>  > Subject: Re: [wxqc] Analysis Question
>  >
>  >
>  > -----BEGIN PGP SIGNED MESSAGE-----
>  > Hash: SHA1
>  >
>  > Alan,
>  >
>  > What software are you using? I have found that I had to get the
>  > software setup as well as the Davis Pro console setup correctly first,
>  > once I did that things came into alignment.
>  >
>  > Mike
>  >
>  > Alan Hensley wrote:
>  > > .hmmessage P { margin:0px; padding:0px } body.hmmessage { font-size:
>  > > 10pt; font-family:Verdana }
>  > > After calibrating my Davis Vantage Pro 2 to match the analysis, I
>  > > think the analysis is off. I am only 5 miles from Haleyville
>  > > Airport's expensive Metar reporting equipment. But I am getting an
>  > > error from the CWOP analysis for some of my readings. My question
>  > > is, how are these analysis determined? Not only are my readings in
>  > > line with the Metar reporting station, they are also
>  > > within tolerances with most of the nearby reporting stations listed
>  > > at the bottom of the report.
>  > >
>  > > Alan
>  > >
>  > > ----------------------------------------------------------------------
>  > > Send e-mail faster without improving your typing skills. Get your
>  > > Hotmail? account.
>  > > 
> <http://windowslive.com/Explore/hotmail?ocid=TXT_TAGLM_WL_hotmail_acq_speed_122008>
>  > >
>  > > ----------------------------------------------------------------------
>  > >
>  > > _______________________________________________
>  > > wxqc mailing list
>  > > Post messages to wxqc at lists.gladstonefamily.net
>  > > To unsubcribe or change delivery options, please go to:
>  > > http://server.gladstonefamily.net/mailman/listinfo/wxqc
>  > > To search the archives:
>  > http://www.google.com/coop/cse?cx=008314629403309390388%3Aknlfnptih9u
>  > >
>  > > The contents of this message are the responsibility of the author.
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>  > _______________________________________________
>  > wxqc mailing list
>  > Post messages to wxqc at lists.gladstonefamily.net
>  > To unsubcribe or change delivery options, please go to:
>  > http://server.gladstonefamily.net/mailman/listinfo/wxqc
>  > To search the archives:
>  > http://www.google.com/coop/cse?cx=008314629403309390388%3Aknlfnptih9u
>  >
>  > The contents of this message are the responsibility of the author.
>  >
>  >
>  >
>  > ------------------------------
>  >
>  > Message: 4
>  > Date: Wed, 10 Dec 2008 14:24:31 -0700
>  > From: Mike Bates <n7dq at comcast.net>
>  > Subject: Re: [wxqc] Analysis Question
>  > To: Discussion of weather data quality issues
>  > <wxqc at lists.gladstonefamily.net>
>  > Message-ID: <4940338F.1070308 at comcast.net>
>  > Content-Type: text/plain; charset=ISO-8859-1
>  >
>  > -----BEGIN PGP SIGNED MESSAGE-----
>  > Hash: SHA1
>  >
>  > Alan,
>  >
>  > With Weather Display I did the following and there may be something
>  > comparable on WeatherLink:
>  >
>  > 1. On the console set the altitude
>  > 2. On the console set the barometer to the closest reliable barometer,
>  > in my case the airport 5 miles away.
>  > 3. In Weather Display on the CWOP setup there was a checkbox that says
>  > "Send Altimeter pressure". It looks like it now sends the raw
>  > altimeter pressure which CWOP does some magic with for comparison.
>  > With Weather Link this may not be an issue.
>  >
>  > I think items 1 and 2 are the key for me.
>  >
>  > Mike - N7DQ
>  >
>  > Alan Hensley wrote:
>  > > .hmmessage P { margin:0px; padding:0px } body.hmmessage {
>  > > font-size: 10pt; font-family:Verdana } Mike, I am using WeatherLink
>  > > 5.8.1 Mike, Alan
>  > >
>  > >> Date: Wed, 10 Dec 2008 12:53:50 -0700 From: n7dq at comcast.net To:
>  > >> wxqc at lists.gladstonefamily.net Subject: Re: [wxqc] Analysis
>  > >> Question
>  > >>
>  > > Alan,
>  > >
>  > > What software are you using? I have found that I had to get the
>  > > software setup as well as the Davis Pro console setup correctly
>  > > first, once I did that things came into alignment.
>  > >
>  > > Mike
>  > >
>  > > Alan Hensley wrote:
>  > >> .hmmessage P { margin:0px; padding:0px } body.hmmessage {
>  > >> font-size: 10pt; font-family:Verdana } After calibrating my Davis
>  > >> Vantage Pro 2 to match the analysis, I think the analysis is
>  > >> off. I am only 5 miles from Haleyville Airport's expensive Metar
>  > >> reporting equipment. But I am getting an error from the CWOP
>  > >> analysis for some of my readings. My question is, how are these
>  > >> analysis determined? Not only are my readings in line with the
>  > >> Metar reporting station, they are also within tolerances with
>  > >> most of the nearby reporting stations listed at the bottom of the
>  > >> report.
>  > >
>  > >> Alan
>  > >
>  > >
>  > >> ----------------------------------------------------------------------
>  > >> Send e-mail faster without improving your typing skills. Get
>  > >> your Hotmail? account.
>  > >
>  > >>
>  > > 
> <http://windowslive.com/Explore/hotmail?ocid=TXT_TAGLM_WL_hotmail_acq_speed_122008>
>  > >
>  > >
>  > >
>  > >
>  > >> ----------------------------------------------------------------------
>  > >>
>  > >>
>  > >
>  > >> _______________________________________________ wxqc mailing list
>  > >> Post messages to wxqc at lists.gladstonefamily.net To unsubcribe or
>  > >> change delivery options, please go to:
>  > >> http://server.gladstonefamily.net/mailman/listinfo/wxqc To search
>  > >> the archives:
>  > > http://www.google.com/coop/cse?cx=008314629403309390388%3Aknlfnptih9u
>  > >
>  > >
>  > >
>  > >> The contents of this message are the responsibility of the
>  > >> author.
>  > >>
>  > _______________________________________________
>  > wxqc mailing list
>  > Post messages to wxqc at lists.gladstonefamily.net
>  > To unsubcribe or change delivery options, please go to:
>  > http://server.gladstonefamily.net/mailman/listinfo/wxqc
>  > To search the archives:
>  > > http://www.google.com/coop/cse?cx=008314629403309390388%3Aknlfnptih9u
>  > >
>  > >
>  > >>
>  > The contents of this message are the responsibility of the author.
>  >
>  > > ----------------------------------------------------------------------
>  > > Send e-mail anywhere. No map, no compass. Get your Hotmail?
>  > > account now.
>  > > 
> <http://windowslive.com/Explore/hotmail?ocid=TXT_TAGLM_WL_hotmail_acq_anywhere_122008>
>  > >
>  > >
>  > > ----------------------------------------------------------------------
>  > > _______________________________________________ wxqc mailing list
>  > > Post messages to wxqc at lists.gladstonefamily.net To unsubcribe or
>  > > change delivery options, please go to:
>  > > http://server.gladstonefamily.net/mailman/listinfo/wxqc To search
>  > > the archives:
>  > > http://www.google.com/coop/cse?cx=008314629403309390388%3Aknlfnptih9u
>  > > The contents of this message are the responsibility of the author.
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>  >
>  >
>  > ------------------------------
>  >
>  > Message: 5
>  > Date: Wed, 10 Dec 2008 15:48:33 -0600
>  > From: Alan Hensley <ke8bp at hotmail.com>
>  > Subject: Re: [wxqc] Analysis Question
>  > To: <wxqc at lists.gladstonefamily.net>
>  > Message-ID: <BAY121-W3790503C3957A4DE351CE3EBFB0 at phx.gbl>
>  > Content-Type: text/plain; charset="iso-8859-1"
>  >
>  >
>  > Joe, Mike, Thanks very much for the information. I am going to 
> research these suggestions and I will reply back.
>  >
>  > Alan/KE8BP> From: joe.niederhofer at rhutasel.net> To: 
> wxqc at lists.gladstonefamily.net> Date: Wed, 10 Dec 2008 14:19:23 -0600> 
> Subject: Re: [wxqc] Analysis Question> > I am having a similar issue. 
> Fairly new station, everything was pretty much > dead on, until the 
> local airport's info started going "wrong"> > Airport 
> http://weather.gladstonefamily.net/site/KENL> > Mine 
> http://weather.gladstonefamily.net/site/D1376> > I'm hesitant to change 
> anything until their analysis gets closer.> > Davis VP2, VWS, V14, P39 
> (I think)> > Joe> PS Not sure I am using this email properly. First 
> timer. Please don't > flame.> > > > ----- Original Message ----- > From: 
> "Mike Bates" <n7dq at comcast.net>> To: "Discussion of weather data quality 
> issues" > <wxqc at lists.gladstonefamily.net>> Sent: Wednesday, December 
> 10, 2008 1:53 PM> Subject: Re: [wxqc] Analysis Question> > > -----BEGIN 
> PGP SIGNED MESSAGE-----> Hash: SHA1> > Alan,> > What software are you 
> using? I have found that I had to get the> software setup as well as the 
> Davis Pro console setup correctly first,> once I did that things came 
> into alignment.> > Mike> > Alan Hensley wrote:> > .hmmessage P { 
> margin:0px; padding:0px } body.hmmessage { font-size:> > 10pt; 
> font-family:Verdana }> > After calibrating my Davis Vantage Pro 2 to 
> match the analysis, I> > think the analysis is off. I am only 5 miles 
> from Haleyville> > Airport's expensive Metar reporting equipment. But I 
> am getting an> > error from the CWOP analysis for some of my readings. 
> My question> > is, how are these analysis determined? Not only are my 
> readings in> > line with the Metar reporting station, they are also> > 
> within tolerances with most of the nearby reporting stations listed> > 
> at the bottom of the report.> >> > Alan> >> > 
> ----------------------------------------------------------------------> 
>  > Send e-mail faster without improving your typing skills. Get your> > 
> Hotmail? account.> > 
> <http://windowslive.com/Explore/hotmail?ocid=TXT_TAGLM_WL_hotmail_acq_speed_122008>> 
>  >> > 
> ----------------------------------------------------------------------> 
>  >> > _______________________________________________> > wxqc mailing 
> list> > Post messages to wxqc at lists.gladstonefamily.net> > To unsubcribe 
> or change delivery options, please go to:> > 
> http://server.gladstonefamily.net/mailman/listinfo/wxqc> > To search the 
> archives:> 
> http://www.google.com/coop/cse?cx=008314629403309390388%3Aknlfnptih9u> 
>  >> > The contents of this message are the responsibility of the 
> author.> -----BEGIN PGP SIGNATURE-----> Version: GnuPG v1.4.7 (MingW32)> 
> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org> > 
> iD8DBQFJQB42IoSvDzn8dfMRAucqAJ4+zrzp8Zgjty+SXtk4opRBivjwLQCeIWp8> 
> fqO/SgnH+1yY14ftEXph0g4=> =tZBH> -----END PGP SIGNATURE-----> > 
> _______________________________________________> wxqc mailing list> Post 
> messages to wxqc at lists.gladstonefamily.net> To unsubcribe or change 
> delivery options, please go to:> 
> http://server.gladstonefamily.net/mailman/listinfo/wxqc> To search the 
> archives: > 
> http://www.google.com/coop/cse?cx=008314629403309390388%3Aknlfnptih9u> > 
> The contents of this message are the responsibility of the author.> > 
> _______________________________________________> wxqc mailing list> Post 
> messages to wxqc at lists.gladstonefamily.net> To unsubcribe or change 
> delivery options, please go to:> 
> http://server.gladstonefamily.net/mailman/listinfo/wxqc> To search the 
> archives: 
> http://www.google.com/coop/cse?cx=008314629403309390388%3Aknlfnptih9u> > 
> The contents of this message are the responsibility of the author.
>  > _________________________________________________________________
>  > You live life online. So we put Windows on the web.
>  > http://clk.atdmt.com/MRT/go/127032869/direct/01/
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>  > ------------------------------
>  >
>  > Message: 6
>  > Date: Thu, 11 Dec 2008 01:47:51 +0000
>  > From: "Derek McIntyre N4DBM" <derek.mc at att.net>
>  > Subject: [wxqc] Solar heating on cloudy days
>  > To: wxqc at lists.gladstonefamily.net
>  > Message-ID:
>  > 
> <121120080147.941.4940714500068FD2000003AD22230703729B0A02D29B9B0EBF0C03D2050A9D0A0B at att.net>
>  >
>  > Content-Type: text/plain; charset="us-ascii"
>  >
>  > Just for info. My aspirator fan quit during mid-day on a cloudy, 
> rainy day. Take a look at how the solar heating (even on a rainy day) 
> affected the temp and humidity that quickly.
>  > Derek AS593 N4DBM-2
>  >
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>  > ------------------------------
>  >
>  > Message: 7
>  > Date: Thu, 11 Dec 2008 01:44:40 +0000
>  > From: "Derek McIntyre N4DBM" <derek.mc at att.net>
>  > Subject: [wxqc] Humidity Jumps Normal?
>  > To: wxqc at lists.gladstonefamily.net
>  > Message-ID:
>  > 
> <121120080144.19391.4940708500086A7900004BBF22230703729B0A02D29B9B0EBF0C03D2050A9D0A0B at att.net>
>  >
>  > Content-Type: text/plain; charset="us-ascii"
>  >
>  > Hello Group,
>  > I have been fighting with my humidity sensor for a while now. I kept 
> it off line for several days in a room with fourteen - yes, 14 certified 
> hygrometers used in the agricultural field, all reading withing 0.5 % of 
> each other, and calibrated my humidity sensor with these hygrometers (my 
> original humidity calibration was only 1.2% high on average). I thought 
> I had a problem because I kept getting readings at random like in the 
> picture attached. My station (blue) had jumped up and back down very 
> quickly while the average (red) stays fairly smooth. Is this in any way 
> a possible weather phenomenon or does it look like a sensor problem? I 
> have repeatedly tested all cables, voltages on the sensor, everything 
> you can imagine. Take a look at my attached pic - any comments or 
> answers welcome.
>  >
>  > Thanks,
>  > Derek AS593 N4DBM-2
>  >
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>  > ------------------------------
>  >
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>  > End of wxqc Digest, Vol 50, Issue 6
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