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《Chinese Journal of Geophysics》 2016-01
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A modified cumulus parameterization scheme and its applications in simulation of heavy rainfall

TANG Xi-Ba;PING Fan;LUO Zhe-Xian;Laboratory of Cloud-Precipitation Physics and Severe Storms(LACS) ,Institute of Atmospheric Physics, Chinese Academy of Sciences;Department of Geography,Nanjing University of Information Science and Technology;  
A cumulus parameterization scheme has been developed and modified according to the local weather features of East Asia,which can be used to simulate the heavy rainfall on the mesoscale model.Firstly,on the basis of synthetic analysis of organized convective precipitation located in Yangtze and Huaihe River basins during flood seasons from 1990 to 2010,the dynamic parameters that could reflect the environment of organized convective precipitation are diagnosed.Secondly,the dynamic parameters are used to control conditions in order to develop and improve the Kain-Fritsch Eta cumulus scheme.Finally,the rainstorms occurring over the Yangtze River valley and South China have been simulated with the Kain-Fritsch Eta cumulus scheme and the modified cumulus scheme,respectively.The comparison of simulation results shows that the modified cumulus parameterization scheme could obviously improve the simulated precipitationboth in locations and intensity.
【Fund】: 国家重点基础研究发展规划项目(973计划)(2013CB430105);; 国家自然科学青年基金(41405059);; 国家自然科学基金面上项目(40775038 40875031 40975036)联合资助
【CateGory Index】: P458.121.1
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