[wxqc] Calibrating anemometers

[Gerry Creager N5JXS]

Having followed a bit of this (I've been missing in action on vacation) 
the obvious question arises: What are the similarities and differences 
in instrument siting?  Are you measuring at the same heights above 
ground? Is your anemometer shielded by buildings or trees preventing it 
from seeing higher readings (I know my station suffers from this). 
Calibrating (or making ad hoc changes to cal'd instruments) is a step 
one shouldn't undertake lightly.  Dr. Lee's comment about sending it 
back to Davis makes the most sense if you're worried  about cal.

You also fail to mention the age of the instrument and whether casual 
inspection suggests the device may have suffered normal wear that could 
cause performance degradation.

Gerry

Victor Engel wrote:
> What techniques do people use to calibrate anemometers? My neighbor and 
> I each have a Davis Vantage Pro anemometer, and his readings are usually 
> higher than mine. Wind gusts, especially, are stronger on his. My wind 
> direction sensor, however, seems to be more sensitive than his.
> 
> Victor
> 
> 
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-- 
Gerry Creager -- gerry.creager at tamu.edu
Texas Mesonet -- AATLT, Texas A&M University	
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