气象科学2017，Vol.37Issue(4)：436-449,14.DOI:10.3969/2016jms.0037
亚洲季风区不同形态中尺度对流系统的特征分析
Characteristics of mesoscale convective system in different morphologies over the Asian monsoon region
摘要
Abstract
Based on the 16-year TRMM satellite data,the spatial distributions,convective properties and their regional variations of quasi-circular,line shaped,and elongated Mesoscale Convective Systems (MCSs) were investigated.Results reveal that the elongated MCSs account for a majority of total MCSs,followed by the quasi-circular and line shaped MCSs.Overall,the line shaped MCSs preferentially occur in the subtropics and over the oceans.The ratio of quasi-circular (line shaped) MCSs to the total MCSs shows a zonal decreasing (increasing) from the west to the east over the subregion.Although the MCSs predominantly occur in the warm seasons (May-September),the quasi-circular and elongated MCSs are more concentrated than the line shaped MCSs.Besides,the occurrences of MCSs are mainly concentrated in the late aftemoon,but the ratio of line shaped MCSs occurring in the midnight to dawn is higher than the other two types.From the mean states of convective proxies,MCSs in the subtropics possess weaker convective intensities than those in the tropics.However,the intensities of MCSs depend on different morphologies.For example,the quasi-circular MCSs exhibit stronger convective intensities than the line shaped and elongated MCSs over the central East China and western North Pacific,but the line shaped MCSs show stronger convective intensities than the other two types over the oceanic regions in the east of China.关键词
中尺度对流系统/亚洲季风区/对流特征/TRMMKey words
Mesoscale convective system/Asian monsoon region/Convective feature/TRMM分类
天文与地球科学引用本文复制引用
阳向荣,费建芳,黄小刚,程小平,何宏让..亚洲季风区不同形态中尺度对流系统的特征分析[J].气象科学,2017,37(4):436-449,14.基金项目
国家自然科学基金资助项目(41230421) （41230421）
国家重点基础研究发展计划(973计划)项目(2013CB430101) （973计划）
