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A Warm Rain Microphysics Parameterization that Includes the Effect of Turbulence
- Article from:
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Journal of the Atmospheric Sciences
- Article date:
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June 1, 2008
- Author:
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Copyright informationCopyright American Meteorological Society Jun 2008. Provided by ProQuest LLC. (Hide copyright information)
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ABSTRACT
A warm rain parameterization has been developed by solving the stochastic collection equation with the use of turbulent collision kernels. The resulting parameterizations for the processes of autoconversion, accretion, and self-collection are functions of the turbulent intensity o
f the flow and are applicable to turbulent cloud conditions ranging in dissipation rates of turbulent kinetic energy from 100 to 1500 cm^sup 2^ s^sup -3^. Turbulence has a significant effect on the acceleration of the drop size distribution and can reduce the time to the formation of raindrops. When the stochastic collection equation is solved with the gravitational collision kernel for an initial ...
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