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contributor authorFeingold, Graham
date accessioned2017-06-09T14:31:52Z
date available2017-06-09T14:31:52Z
date copyright1993/10/01
date issued1993
identifier issn0022-4928
identifier otherams-21054.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4157351
description abstractA parameterization of evaporation losses below cloud base is presented for use in general circulation models to assist in quantification of water content in the hydrological cycle. The scheme is based on detailed model calculations of the evolution of raindrop spectra below cloud base and includes the processes of collision coalescence/breakup. Evaporation is expressed as a percentage decrease in the liquid water mixing ratio, and the parameterization is formulated as an algebraic equation in (i) the cloud-base values of the mixing ratio and the drop concentration, (ii) the fall distance, and (iii) the lapse rate of temperature in the subcloud environment. Results show that when compared to the detailed model calculations, good estimates of evaporation (usually within 20% and often within 10%) are obtained for a wide range of conditions. An analysis of the errors in evaporation calculations associated with errors in the parameterization variables is performed.
publisherAmerican Meteorological Society
titleParameterization of the Evaporation of Rainfall for Use in General Circulation Models
typeJournal Paper
journal volume50
journal issue20
journal titleJournal of the Atmospheric Sciences
identifier doi10.1175/1520-0469(1993)050<3454:POTEOR>2.0.CO;2
journal fristpage3454
journal lastpage3467
treeJournal of the Atmospheric Sciences:;1993:;Volume( 050 ):;issue: 020
contenttypeFulltext


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