[wxqc] Dewpoint Readings

[Hank Sniadoch]

Get yourself a sling psychrometer and measure your relative humidity ad 
then calculate your dew point to see if you're right ..... sounds like a 
lot of work but if you want to know whether you're accurate, that's the 
way.  I'm a temperature buff and have thermometers that cost me $300 
because they're calibrated and accurate to within 0.1 degrees so that I 
know how "good" my other thermometers are.

Heidi Neverman wrote:

> John, I feel your pain.  My dewpoint reading have been off this spring 
> also with my Vantage Pro 2 system that I got in December.  I have been 
> assuming it is because of my own little microclimate.  My sensor is 
> about 20 feet from the Bay of Green Bay and the rest of my local 
> stations are more inland. I would also like to know from the experts 
> if this is an accurate assumption.
>
> http://weather.gladstonefamily.net/site/C4961
>
> Heidi
> CW4961
>
> ----- Original Message ----- From: <jdkuhn at adelphia.net>
> To: <wxqc at lists.gladstonefamily.net>
> Sent: Thursday, April 27, 2006 7:35 AM
> Subject: [wxqc] Dewpoint Readings
>
>
>> A little over a week ago I started seeing my depoint readings getting 
>> flagged with a red X on the 
>> http://weather.gladstonefamily.net/site/C5204. If you look at the 
>> analysis period for the last 3 days and 7 days you will see that 
>> dewpoint errors for the day time range from -3.4 to -4.2.  At night 
>> time the errors are not as bad but errors have been as bad as -3.6. 
>> My temperatures have been tracking pretty good with surrounding 
>> sites.  I wondering sent we have really gotten into the grass growing 
>> season if this can be causing part of my problem as I cut it at the 
>> heighest levels that maybe I retaining more moisture than surrounding 
>> sites??  I have a Vantage Pro 2 system which I brought back in 
>> January.  Would a fan aspirator help out any?  I know this is used 
>> usually for temps.  I appreciate any ideas which anybody has on this 
>> matter.
>>
>> Thanks,
>>
>> John
>> CW5204
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>>
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