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contributor authorBlad, Blaine L.
contributor authorRosenberg, Norman J.
date accessioned2017-06-09T17:33:18Z
date available2017-06-09T17:33:18Z
date copyright1974/03/01
date issued1974
identifier issn0021-8952
identifier otherams-8715.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4230789
description abstractMost reports show good agreement between evapotranspiration (ET) rates estimated by the Bowen Ratio-Energy Balance (BREB) method and rates measured with lysimeters, although underestimation by the BREB model has occasionally been reported. This study was conducted to evaluate the performance of the BREB technique in the climatic conditions characteristic of the central Great Plains, a region where a significant proportion of the energy consumed by evapotranspiration is supplied from advected sensible heat. Agreement between the BREB method and lysimetric measurements of ET is good during non-advective periods but during advective periods the BREB model underestimates ET by about 20%. Data collected in this study suggest that the difference is due primarily to an inequality of the exchange coefficients for beat (Kh) and water vapor (Kw). In the development of the BREB method these coefficients are assumed to be identical but our results indicate that the ratio Kh/Kw is greater than 1 for the stable conditions associated with the downward transport of sensible heat.
publisherAmerican Meteorological Society
titleLysimetric Calibration of the Bowen Ratio-Energy Balance Method for Evapotranspiration Estimation in the Central Great Plains
typeJournal Paper
journal volume13
journal issue2
journal titleJournal of Applied Meteorology
identifier doi10.1175/1520-0450(1974)013<0227:LCOTBR>2.0.CO;2
journal fristpage227
journal lastpage236
treeJournal of Applied Meteorology:;1974:;volume( 013 ):;issue: 002
contenttypeFulltext


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