I'm in a bit of a pickle. Over the last month the weekly emails from Gladstone are showing my station as being too warm. I've never made any calibrations on my WS-2902 thermometer, it's straight out of the box. My station is sited about 8 feet off the ground with roughly 15-20 feet of clearance from any building or trees (which is as good as I can get in my small yard)
As the error is higher at night, I'm confident it isn't due to a sun shielding issue. Around the same time my station started failing the quality check, the National Weather Service replaced the thermometer at the ASOS station about 5 miles away. They have publicly stated this new thermometer has a cold bias of 2-3F but they haven't taken any steps to replace it. I believe this is causing an issue with the analysis that's applied to my station. My station is also situated closer to the urban center, whereas the ASOS is well outside of town at the airport, and I believe this is why my station is reading higher at night, because of an urban heat island effect. When looking at other stations within a mile or so of me, they have similar temperature readings.
Obviously the NWS issue is out of my hands, and I don't think the analysis is wrong, it's just ingesting faulty information. So, I'm not sure what to do here. Do I just leave my station as is and hope the NWS replaces the faulty thermometer eventually? Or do I calibrate my station's thermometer down to satisfy the CWOP algorithm? Any advice would be greatly appreciated, thank you!
Here is my station's quality summary:
https://weather.gladstonefamily.net/site/F7290And my station's comparison graphs:
https://weather.gladstonefamily.net/cgi-bin/wxqual.pl?site=F7290Here is the NWS ASOS quality summary:
https://weather.gladstonefamily.net/site/KALBAnd the ASOS comparison graphs:
https://weather.gladstonefamily.net/cgi-bin/wxqual.pl?site=KALB