Siting Agricultural Weather Stations

by Paul W. Brown,
Thomas W. Ley,



Document Type: Proceeding Paper

Part of: Management of Irrigation and Drainage Systems: Integrated Perspectives

Abstract:

Studies were conducted in Arizona and Washington to investigate how the surrounding fetch affects data collected by agricultural weather stations (AWS). AWS surrounded by extensive areas of well-watered grass or alfalfa recorded significantly lower temperatures, vapor pressure deficits, wind speeds, degree day accumulations and reference evapotranspiration rates than AWS located over fallow or natural dryland vegetation. Where possible AWS should be located in large areas of well-watered grass or alfalfa. The characteristics of the surrounding fetch should be recorded for AWS located with less desirable fetch.

Subject Headings: Vegetation | Wind pressure | Site investigation | Irrigation water | Arid lands | Agriculture | Wind speed | United States | Arizona | Washington

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