江西外来飑线的常见卫星云图特征

Satellite cloud chart features of outside squall line influencing on Jiangxi

利用常规红外云图、天气形势和地面等资料,对江西外来飑线天气过程的云图特征进行分析,结果表明:影响江西的外来飑线在云图上常见有3种特征,即中尺度对流云团、狭窄积云线和冷出流边界所致的对流云带。外来飑线云图特征,常常提前于雷达探测时间而发现回波,掌握这些云图特征,对早期发现外来飑线系统十分有利。

Based on infrared cloud charts, synoptic charts and observation data, the analysis of cloud chart features of outside squall line in weather process in Jiangxi were conducted. The results show that three types of cloud chart features of outside squall line impact on Jiangxi Province, namely meso-scale convective cloud cluster, narrow cu- mulus line and convective cloud band caused by cold effluent border. Cloud chart features of outside squall line, usually are founded ahead of radar detecting time, and to master these cloud chart features are very beneficial to finding early outside squall line system.