[wxqc] Vantage-Pro Dew Point Calibration Question

[Lance]

Hi Dennis

I have a similar problem with my humidity. My station is, more often 
than not, higher on humidity and lower on nighttime temps than my 
surrounding stations. I was concerned that my humidity readings were too 
high, so I purchased a sling psychrometer and than later a digital 
psychrometer. I found that both psychrometers  gave me the same dew 
point that I was seeing on my VP2. The two psychrometers were off from 
one another by two degrees, both dry and wet bulb, but the dew point was 
the same. The sling  psychrometer temperature was also the same as the 
VP2. I feel comfortable with my readings even though I get dinged on the 
QC reports. From what I have seen locally, the Vantage Pro stations are 
pretty decent from the factory. I see variations that aren't completely 
attributable to micro-climates but they are minor compared to some of 
the other brands out there. Do what you can to verify your data before 
you change your settings to match your neighbors.

Good Luck

I have a question for the group.  Can you be socked in with fog and not 
have 100% humidity? I have never seen it on my station, maybe 98%. I am 
already getting hit for being too high and don't want to adjust it up. 
I'm hoping it's just in the design of the sensor.
Thanks

Lance
CW1020
www.mountainbase.com