From CWOP, to be used as a standard;
2. Siting
The international standard for anemometer height above ground level is 10 meters (33
feet) with no obstructions at or above this level. CWOP encourages weather station
operators to place their anemometers at this level, consistent with safety considerations, if
no obstructions are at or immediately below this height.
Simple Anemometer standard (see Figure 13):
10 meters (33 feet) above ground level (AGL).
If there are obstructions above 8 meters, anemometer should be at least 2 meters (7
feet) above obstructions (trees and/or buildings) that are within the immediate vicinity
of weather station (20 meters horizontally).
Anemometer mast should be absolutely vertically level.
Anemometer should be orientated to yield wind direction values from “true north”
The way I see it, if you have a Davis, it's considered a professional system, therefore, try and get as accurate a siting as possible, especially if you're sending data to CWOP, NOAA, etc. The reason CWOP inconsistency exists is due to deviations from the standard....and micro-climatological variations. You spend $600 plus on station/software, set it up as such.
The previously posted conversion chart should aid those not able to site properly. Gain adjustments?
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