卫星遥感揭示的青藏高原上MCS活动特征及东移传播  

The Features of MCS and Their Eastward Moving and Propagation over the Tibetan Plateau

作　　者：过仲阳[1] 林珲[1] 江吉喜[2] 黄签[2] 方兆宝[1] 

机构地区：[1]香港中文大学地理系地球信息科学联合实验室 [2]中国气象局国家卫星气象中心,北京100081

出　　处：《遥感学报》2003年第5期350-357,共8页NATIONAL REMOTE SENSING BULLETIN

基　　金：国家重点基础研究发展计划规划"我国重大天气灾害的机理和预测理论研究项目"(G19980 40 90 8 0 3 0 3 );香港政府TheEar markedGrantforResearch 1999- 2 0 0 0"一种气象卫星数据挖掘及其应用智能系统的研究"

摘　　要：利用 1998年 6— 8月日本GMS红外辐射亮温 (Tbb)资料 ,对高原上中尺度对流系统 (MCS)的活动进行了自动追踪 ,得到了高原上夏季MCS的大小、强度、活动区域及生命史、形状特征。在此基础上 ,利用国家气象中心高分辨率有限区域分析预报系统 (HLAFS)的数值分析格点值 ,研究了MCS的东移传播与其周围环境场物理量之间的关系 ,建立了 4 0 0hPa和 5 0 0hPa两个层次上有利于MCS移出高原的物理量场概略模型图。In this paper, Geostationary Meteorological Satellite (GMS) infrared blackbody temperature (Tbb) data from June to August 1998 are used to automatically track the activity of Mesoscale Convective Systems (MCS) over the Tibetan Plateau. Consequently, the features of MCS, such as area, intensity, life cycle, activity region and shape, are obtained. High Resolution Limited Area Analysis and Forecasting System (HLAFS) values provided by China National Satellite Meteorological Center are used to study the relationships between the MCS movement routes and their environmental physical field values, based on the distribution and movement routes of MCS over the Tibetan Plateau. Favorable environmental physical field charts of influencing MCS movement ouf of the Tibetan Plateau in different UTC are developed using spatial data mining techniques at levels of 400hPa and 500 hPa, respectively.

关 键 词：卫星遥感 青藏高原 MCS活动特征 东移传播 辐射亮温 中尺度对流系统 自动追踪 

分 类 号：P407[天文地球—大气科学及气象学]