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Contact

Mailing Address:
University of Idaho
3806 N 3600 E
Kimberly ID 83341-5082

Phone: 208-423-4691

Fax: 208-423-6699

Web: uidaho.edu/cals/kimberly

Directions

Mailing Address:
University of Idaho
315 Falls Avenue East
Twin Falls ID 83301

Phone: 208-736-3600

Fax: 208-736-0843

Web: uidaho.edu/cals/twin-falls

Physical Address:
E.J. Iddings Agricultural Science Laboratory, Room 45
606 Rayburn Street

Mailing Address:
University of Idaho
875 Perimeter Drive MS 2337
Moscow, ID 83844-2337

Phone: 208-885-6681

Fax: 208-885-6654

Web: uidaho.edu/cals/iaes

Directions

Standardization of Reference Evapotranspiration

Evapotranspiration represents the loss of water from the earth’s surface through the combined processes of evaporation (from soil and plant surfaces) and plant transpiration (i.e. internal evaporation). Reference evapotranspiration is the rate at which readily available soil water is vaporized from vegetated surfaces.

The Environmental and Water Resources Institute (EWRI) of the American Society of Civil Engineers (ASCE) issued the following report that defines a benchmark reference evapotranspiration equation that standardizes the calculation of reference evapotranspiration. The intent is to produce consistent calculations for reference evapotranspiration and to improve transferability of crop coefficients.

Additional resources:

Contact

Mailing Address:
University of Idaho
3806 N 3600 E
Kimberly ID 83341-5082

Phone: 208-423-4691

Fax: 208-423-6699

Web: uidaho.edu/cals/kimberly

Directions

Mailing Address:
University of Idaho
315 Falls Avenue East
Twin Falls ID 83301

Phone: 208-736-3600

Fax: 208-736-0843

Web: uidaho.edu/cals/twin-falls

Physical Address:
E.J. Iddings Agricultural Science Laboratory, Room 45
606 Rayburn Street

Mailing Address:
University of Idaho
875 Perimeter Drive MS 2337
Moscow, ID 83844-2337

Phone: 208-885-6681

Fax: 208-885-6654

Web: uidaho.edu/cals/iaes

Directions