用星载雷达和微波辐射计对江淮云雨垂直结构进行分析及模拟研究  

Study on the Vertical Structure of Precipitable Cloud in HUAIHE River Basin Area with Spaceborne Radar and Radiometer

作　　者：刘文明 金鑫[1] 朱元竞[1] 

机构地区：[1]北京大学物理学院大气科学系

出　　处：《北京大学学报（自然科学版）》2004年第1期56-65,共10页Acta Scientiarum Naturalium Universitatis Pekinensis

基　　金：国家自然科学基金 (4 0 10 5 0 0 1);教育部博士点基金 (2 0 0 2 0 0 0 10 2 7)资助项目

摘　　要：利用热带降雨测量计划卫星 2 0 0 0年在淮河流域能量和水循环试验区域的观测资料建立了适合该地区的云雨模型 ,并用此模型研究了云雨系统中各种成分对星载微波辐射计所接收的辐射亮温的贡献。模拟结果跟微波成像仪 (TRMM)的九通道微波辐射亮温进行对比的结果表明 :用TRMM卫星资料建立的云雨模型较好的反映了云降水系统的实际辐射情况 ;同时也看到 ,降水系统中上部冰层对上行辐射亮温影响巨大 ,值得进一步研究。Using data gathered by Tropical Rainfall Measuring Mission (TRMM) Satellite in 2000 during the period of Huaihe River Basin Energy and Water Cycle Experiment(HUBEX),a new precipitable cloud model is established.To validate this model,a vector radiative transfer model is used to simulate the upwelling microwave radiation sensed by TRMM Microwave Imager (TMI).The contribution of each component in this cloud model to the total upwelling brightness temperature is discussed.It is concluded that the new precipitable cloud model is reliable and can fit the requirement for further study in relative areas;also it is pointed out that the influence of icy hydrometeors to the upwelling radiation is severe and needs further study.

关 键 词：云雨模型 雷达 微波辐射 降水 

分 类 号：P412.25[天文地球—大气科学及气象学]