CONVECTIVE-STRATIFORM RAINFALL PARTITION BY RADIANCE-DERIVED CLOUD CONTENT:A MODELING STUDY  

作　　者：沈新勇 梅海霞 庆涛 李小凡 

机构地区：[1]Key Laboratory of Meteorological Disaster,Ministry of Education,Joint International Research Laboratory of Climate and Environment Change,Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters,Nanjing University of Information Science and Technology [2]School of Earth Sciences,Zhejiang University

出　　处：《Journal of Tropical Meteorology》2016年第2期182-190,共9页热带气象学报（英文版）

基　　金：National Key Basic Research and Development Project of China(2013CB430103,2015CB453201);National Natural Science Foundation of China(41475039,41375058,41530427);Priority Academic Program Development of Jiangsu Higher Education Institutions(PAPD)

摘　　要：A new scheme that separates convective-stratiform rainfall is developed using threshold values of liquid water path(LWP) and ice water path(IWP).These cloud contents can be predicted with radiances at the Advanced Microwave Sounding Unit(AMSU) channels(23.8,31.4,89,and 150 GHz) through linear regression models.The scheme is demonstrated by an analysis of a two-dimensional cloud resolving model simulation that is imposed by a forcing derived from the Tropical Ocean Global Atmosphere Coupled Ocean-Atmosphere Response Experiment(TOGA COARE).The rainfall is considered convective if associated LWP is larger than 1.91 mm or IWP is larger than1.70 mm.Otherwise,the rainfall is stratiform.The analysis of surface rainfall budget demonstrates that this new scheme is physically meaningful.A new scheme that separates convective-stratiform rainfall is developed using threshold values of liquid water path（LWP） and ice water path（IWP）.These cloud contents can be predicted with radiances at the Advanced Microwave Sounding Unit（AMSU） channels（23.8,31.4,89,and 150 GHz） through linear regression models.The scheme is demonstrated by an analysis of a two-dimensional cloud resolving model simulation that is imposed by a forcing derived from the Tropical Ocean Global Atmosphere Coupled Ocean-Atmosphere Response Experiment（TOGA COARE）.The rainfall is considered convective if associated LWP is larger than 1.91 mm or IWP is larger than1.70 mm.Otherwise,the rainfall is stratiform.The analysis of surface rainfall budget demonstrates that this new scheme is physically meaningful.

关 键 词：cloud-resolving model simulation radiance transfer model radiance temperature simulation convective-stratiform rainfall partition liquid water path ice water path 

分 类 号：P435[天文地球—大气科学及气象学]