一种引发长江中游区域性暴雨的云系特征分析

来源 :2013年全国卫星应用技术交流会暨卫星天气应用平台技术研讨会 | 被引量 : 0次 | 上传用户:HOHO333
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利用FY-2卫星云图资料、NCEP1°×1°再分析资料和常规观测资料,在研究发生暴雨的大尺度环流背景基础上,对其卫星云图结构形式、纹理等特征进行分析,提炼引发长江中游暴雨的典型云带特征,其中"厂"型云带由中低纬三条云系相互作用形成,是引发长江中游区域性暴雨的典型云型,在西南一东北向云系和东西向云系相交处是暴雨中心."厂"形云带的强弱与江淮切变线、南支槽、川西低涡、高低空急流、黄淮高压等影响系统的强弱、相对位置有密切关系,江淮切变线北侧的高压发展是形成"厂"型云带的关键,南支槽东移和低层西南急流增强是导致"厂"型云带引发湖北省区域性暴雨的主要原因.
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