[wxqc] Temp Issue Maybe

[Chuck Goble]

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 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
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>>     
>
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