A 6-yr Cloud-to-Ground Lightning Climatology and Its Relationship to Rainfall over Central and Eastern China
A 6-yr Cloud-to-Ground Lightning Climatology and Its Relationship to Rainfall over Central and Eastern China
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DOI：
10.1175/jamc-d-15-0029.1
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发表时间：
2015-12
影响因子：
3
通讯作者：
Rudi Xia;Da‐Lin Zhang;Bailin Wang-
中科院分区：
文献类型：
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作者：
Rudi Xia;Da‐Lin Zhang;Bailin Wang-
摘要利用2008- 2013年6年期间3200万次云地闪电和热带测雨使命观测资料，研究了中国中东部地区云地闪电气候学及其与降水的关系。结果表明，中国各地的闪光密度的空间和时间的变化很大。夏季（冬季）闪光数最高（最低），正闪光比例最低（最高）。我国北方的地闪仅在夏季比较活跃，而冬季地闪仅在长江流域比较活跃。地闪密度最高的地区是北方珠江三角洲，其次是四川盆地、长江三角洲和东南沿海，年地闪密度超过9次/km 2，年地闪日数超过70天。低闪光密度的日子发生在山区作为一个结果的发展短暂的下午…
AbstractThe cloud-to-ground (CG) lightning climatology and its relationship to rainfall over central and eastern China is examined, using data from 32 million CG lightning flashes and Tropical Rainfall Measuring Mission measurements during a 6-yr period covering 2008–13. Results show substantial spatial and temporal variations of flash density across China. Flash counts are the highest (lowest) in summer (winter) with the lowest (highest) proportion of positive flashes. CG lightning over northern China is more active only in summer, whereas in winter CG lightning is more active only in the Yangtze River basin. The highest CG lightning densities, exceeding 9 flashes per kilometer squared per year and more than 70 CG lightning days per year, are found in the northern Pearl River delta region, followed by the Sichuan basin, the Yangtze River delta, and the southeastern coast of China in that order. Lower-flash-density days occur over mountainous regions as a result of the development of short-lived afternoon...