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contributor authorHong, Song-You
contributor authorSunny Lim, Kyo-Sun
contributor authorKim, Ju-Hye
contributor authorJade Lim, Jeong-Ock
contributor authorDudhia, Jimy
date accessioned2017-06-09T16:22:29Z
date available2017-06-09T16:22:29Z
date copyright2009/01/01
date issued2009
identifier issn1558-8424
identifier otherams-66702.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4208068
description abstractThis study examines the relative importance of ice-phase microphysics and sedimentation velocity for hydrometeors in bulk microphysics schemes. The two bulk microphysics schemes having the same number of prognostic water substances, the Weather Research and Forecasting (WRF) Single-Moment 6-Class Microphysics Scheme (WSM6) and the Purdue?Lin scheme (PLIN), are evaluated for a 2D idealized storm case and for a 3D heavy rainfall event over Korea. The relative importance of microphysics and sedimentation velocity for ice particles is illuminated by the additional experiments that exchange the sedimentation velocity formula for graupel in the two schemes. In a 2D idealized storm simulation test bed, it is found that, relative to the PLIN scheme, the WSM6 scheme develops the storm late with weakened intensity because of a slower sedimentation velocity for graupel. Such a weakened intensity of precipitation also appears in a 3D model framework when the WSM6 scheme is used, in conjunction with the overall distribution of the precipitation band southward toward what was observed. The major reason is found to be the ice-phase microphysics of the WSM6 and related ice-cloud?radiation feedback, rather than the smaller terminal velocity for graupel in the WSM6 than in the PLIN scheme.
publisherAmerican Meteorological Society
titleSensitivity Study of Cloud-Resolving Convective Simulations with WRF Using Two Bulk Microphysical Parameterizations: Ice-Phase Microphysics versus Sedimentation Effects
typeJournal Paper
journal volume48
journal issue1
journal titleJournal of Applied Meteorology and Climatology
identifier doi10.1175/2008JAMC1960.1
journal fristpage61
journal lastpage76
treeJournal of Applied Meteorology and Climatology:;2009:;volume( 048 ):;issue: 001
contenttypeFulltext


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