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Analysis of evaporative flux data for various climates

Katul, G.G. and Cuenca, R.H. and Grebet, P. and Wright, J.L. and Pruitt, W.O. (1992) Analysis of evaporative flux data for various climates. Journal of Irrigation and Drainage Engineering. 118(4):601-618.

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Estimation of evapotranspiration is a key requirement of hydrologic
balance studies and climate analysis. The study reported involved collection of
precise weighing lysimeter and meteorological data from three sites representing
distinct climates. The combined data set for daily amounts of evapotranspiration
and meteorological variables covers a total of 19 years on either an annual or
growing season basis. The pan evaporation, Priestley-Taylor, original Penman, and
Penman-Monteith evapotranspiration estimating methods arc compared with lysimeter
measurements using a moving average of 1-30 days. The results indicate
the applicability of the various methods as a function of climate regime and the
reduction in standard error of the estimate and increase in the coefficient of determination
as a function of length of the moving average period. The results can
be used both to determine which methods are most applicable for different climates
and the expected magnitude of the error as a function of the estimating interval.
This study indicates that a 5-10-day moving average can reduce the standard error
of the estimate and increase the coefficient of determination significantly between
estimated and measured reference evapotranspiration for several estimating methods
for various climates.

Item Type: Article
NWISRL Publication Number: 0775
Subjects: Research methodology
Mass Import - autoclassified (may be erroneous)
Depositing User: Dan Stieneke
Date Deposited: 20 Nov 2010 21:53
Last Modified: 01 Dec 2016 22:40
Item ID: 580