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- W3041567791 abstract "利用高时空分辨率的相当黑体温度(TBB)数据, 基于模式匹配的自动识别追踪方法将2000~2016年(2005除外)暖季(5~8月)长江中游二级地形附近(106°E~113°E, 28°N~35°N)中尺度对流系统(MCSs)进行识别、追踪和分类, 并研究东移和准静止两类个例的时空分布特征、对流强度以及有利于MCSs东移的大尺度环流背景条件. 结果表明, 两类个例发生频次最高的月份为7月. 东移个例主要集中生成在研究区域的东部地区, 而准静止个例则主要生成在研究区域的西部. 两类个例初生时刻的峰值均出现在午后, 但准静止个例在凌晨出现次峰值. 东移个例比准静止个例生命史更长, 移动距离更远, 成熟时刻云团面积更大, 云团最低亮温更低(对流发展更为旺盛), 对长江中下游地区的降水系统影响更大. 青藏高原以东对流层中层浅槽和西太平洋副热带高压的配合为二级地形东部对流的生成和东移提供了有利的环境条件, 低层正相对涡度和较强的垂直风切变为对流的组织和发展提供了动力条件; 强盛的低空急流不断向二级地形东部和以东地区输送暖湿气流, 大量水汽的辐合有利于对流的发展和长时间维持." @default.
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- W3041567791 date "2020-06-05" @default.
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- W3041567791 title "暖季长江中游二级地形附近东移和准静止<bold>MCSs</bold>的统计特征和环流形势对比" @default.
- W3041567791 doi "https://doi.org/10.1360/n072018-00074" @default.
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