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PARAMETRIZATION
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CONVMASSFLUX
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The mass-flux approach to the parametrization of deep convection
March 1997
By D. Gregory
PARAMETRIZATION
Deep convection mass flux
General problem of parametrization
Land suface assimilation
Land surface processes
Linear gravity waves
Microwave radiation
Non-convective condensation
Orographic drag
Radiative transfer
Represenation of clouds
Role of land surface
Sensitivity of convection
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Table of contents
1 . Introduction
2 . The need for parametrization.
3 . Mass-flux theory of convection
4 . Evaluation of mass-flux theory
5 . Practical application of mass-flux theory
5.1 Estimation of cloud properties
5.2 Issues in the formulation of bulk mass-flux schemes
5.3 Performance of "cloud ensemble" and "bulk schemes"
5.4 Representation of downdraughts
5.5 Estimation of cloud base mass flux
6 . Evaluation of convection schemes using cloud resolving models
7 . Concluding comments
References
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30.05.2002
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