Conversion between evapotranspiration references and methods

CONVERSION ENTRE LAS REFERENCIAS Y LOS METODOS DE LA EVAPOTRANSPIRACION.National Irrigation Symposium

Wright, James L. and Allen, Richard G. and Howell, Terry A. (2000) Conversion between evapotranspiration references and methods. pp. 251-259. In: Evans, R.G. and Benham, B.L. and Trooien, T.P. (eds.) National Irrigation Symposium. Proc. 4th Decennial Symp. USA-AZ-Phoenix, 2000/11/14-16. ASAE, St. Joseph, MI.

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Abstract

Ratios of reference evapotranspiration for alfalfa (ET r) and for grass (ET0) are evaluated using
measured ETr and ET,, from lysimeter systems at Kimberly, Idaho and Bushland, Texas. In
addition, ratios are evaluated using estimates by the Kimberly Penman and ASCE Penman-Monteith
evapotranspiration methods. An ET reference conversion equation from FAO-56 is
also compared. The ASCE-PM and Kimberly Penman methods predict differently for both ET,
and ET0 so that ratios of ETr / ET° computed from both methods behave differently Ratios of
ETr / ET0 from lysimeter measurements averaged 1.15 at both locations.

Item Type:	Conference or Workshop Item (Paper)
NWISRL Publication Number:	1034
Subjects:	Water > Evapotranspiration Research methodology Mass Import - autoclassified (may be erroneous)
Depositing User:	Dan Stieneke
Date Deposited:	20 Nov 2010 21:57
Last Modified:	14 Nov 2016 18:52
Item ID:	1096
URI:	https://eprints.nwisrl.ars.usda.gov/id/eprint/1096