Comparison of Estimated and Measured Daily Evapotranspiration from Irrigated Crops in Southern Idaho

Jensen, Marvin E. and Wright, James L. (1969) Comparison of Estimated and Measured Daily Evapotranspiration from Irrigated Crops in Southern Idaho. In: Agr. Met. Soc. Bulletin. 1 pp.

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Abstract

Irrigation scheduling using climate-crop-soil data requires
accurate estimates of daily evapotranspiration. Extensive application
of this method of irrigation scheduling also requires the use of standard
or readily available meteorological data. Experience in
southern Idaho indicates that daily net radiation can be estimated
within 10% using observed solar radiation, maximum and minimum
air temperatures, and a single observation of dew point temperature.
Observed versus cloudless day solar radiation for the area is used
to adjust the net longwave radiation for cloud cover effects. Estimates
of daily evapotranspiration with adequate soil moisture and
nonlimiting leaf area generally also are within 10% when using a
combination energy balance-aerodynamic equation. Several
equations for estimating potential evapotranspiration will be compared
with measured values.

Item Type:	Technical Bulletin
NWISRL Publication Number:	0157
Subjects:	Water > Evapotranspiration Mass Import - autoclassified (may be erroneous)
Depositing User:	Dan Stieneke
Date Deposited:	20 Nov 2010 21:58
Last Modified:	25 Oct 2016 18:19
Item ID:	1197
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/1197