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A parameterization scheme for non‐convective condensation including prediction of cloud water content
Author(s) -
Sundqvist Hilding
Publication year - 1978
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.49710444110
Subject(s) - liquid water content , condensation , precipitation , relative humidity , evaporation , environmental science , convection , water content , atmospheric sciences , humidity , cloud condensation nuclei , meteorology , physics , cloud computing , geology , computer science , aerosol , geotechnical engineering , operating system
A model for non‐convective condensation processes has been developed. The model allows condensation to begin before relative humidity reaches 100%. The liquid water content of clouds is a prognostic variable of the model. The rate of condensation is a function of relative humidity and moisture flux convergence. The micro‐physical processes involved in the formation of clouds and precipitation are parameterized by assuming that the rate of precipitation formation is a function of the amount of cloud water. Evaporation from falling rain is taken into account. Quantitative tests with the model indicated that it yields reasonable evolution times and water content of clouds, and gives reasonable precipitation amounts.