A two-moment cloud microphysics parameterization for mixed-phase clouds. Part 2: Maritime vs. continental deep convective storms |
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Authors: | A Seifert K D Beheng |
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Institution: | Institut für Meteorologie und Klimaforschung, Universit?t Karlsruhe/Forschungszentrum Karlsruhe, Karlsruhe, Germany
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Abstract: | Summary A systematic modeling study investigates the effects of cloud condensation nuclei (CCNs) on the evolution of mixed-phase deep
convective storms. Following previous studies the environmental conditions like buoyancy and vertical wind shear are varied
to simulate different storm types like ordinary single cells, multicells and supercells. In addition, the CCN characteristics
are changed from maritime to continental conditions. The results reveal very different effects of continentality on the cloud
microphysics and dynamics of the different storms. While a negative feedback on total precipitation and maximum updraft velocity
is found for ordinary single cells and supercell storms, a positive feedback exists for multicell cloud systems. The most
important link between CCN properties, microphysics and dynamics is the release of latent heat of freezing. |
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