[wxqc] temperature errors

[Mark Wyman]

Yes. I am on a fairly decent hill, at 1300 feet or so, our driveway has a
240' elevation change. At night the house is typically 5 degrees warmer than
the bottom of the driveway, especially on frosty, still nights. The
inversion can set up fairly steep even before the sun finishes setting! Much
of the time I look out the window on the top and say "great, no frost this
time", and get to the bottom of the driveway and it looks like someone
exploded a large can of white paint.

One of these days I will add a station to the bottom of the hill that can
send all the way back to the top just to see the differences in real-time.

-Mark

-----Original Message-----
From: wxqc-bounces at lists.gladstonefamily.net
[mailto:wxqc-bounces at lists.gladstonefamily.net] On Behalf Of dbj at capital.net
Sent: Tuesday, October 17, 2006 4:10 PM
To: wxqc at lists.gladstonefamily.net
Subject: [wxqc] temperature errors

I checked the accuracy of my temperature sensor with another thermometer 
placed on top of the rain gauge and on the other side of the house last 
night.  Both sensors were within 1 degree F of each other.  So, assuming my 
sensor is accurate, why is my location so much warmer (up to 11 degrees 
warmer the night of October, 16) than neighboring stations most 
nights?   Could it be caused by temperature inversion because my neighbors 
are located at lower elevations in the Hudson River valley and I am on top 
of a hill at 645 feet?  Is temperature inversion typically a night-time 
phenomenon?



>Date                UTC SITE        Alt (mb)           Temp °F DewPt °F 
>Wind Dir Speed knts
>16-OCT-20061157 CW6304 1025.3 +0.09 37 -6.99  32-3.14 138+390.9-0.7
>16-OCT-20061217 CW6304 1025.3 -0.54  38 -7.99  33-3.81 127+500.9-0.7
>16-OCT-20061227 CW6304 1025.4 -0.92  39 -8.99  33-4.16 143+340.9-0.7
>16-OCT-20061247 CW6304 1025.5 -1.02  41 -10.9934-5.13 106+711.7-1.6
>16-OCT-20061257 CW6304 1025.7 -0.67  42 -6.94  33+0.42 109+790.9-0.6
>16-OCT-20061317 CW6304 1026.1 -1.51  45 -9.77  33+0.19 207-192.6-2.4
>16-OCT-20061327 CW6304 1026.2 -1.61  45 -9.94  33+0.59 241-530.9-0.6
>16-OCT-20061347 CW6304 1026.2 -1.61  46 -10.9433+0.46 198-101.7-1.5
>16-OCT-2006Errs CW6304   0/89              10/89       0/89      0/89
0/89
>16-OCT-2006Smry CW6304-1.00.39-42.43-11.50-570-1.51.2
>
>


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