A survey of thunderstorm flash rates compared to cloud top height using TRMM satellite data
A survey of thunderstorm flash rates compared to cloud top height using TRMM satellite data
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DOI：
10.1029/2001jd900233
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发表时间：
2001-10
影响因子：
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通讯作者：
T. Ushio;S. Heckman;D. Boccippio;H. Christian;Z. Kawasaki
中科院分区：
文献类型：
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作者：
T. Ushio;S. Heckman;D. Boccippio;H. Christian;Z. Kawasaki
利用热带降雨测量使命任务（TRMM）卫星的数据研究了云高和闪电活动之间的关系。利用TRMM卫星上的降水雷达和闪电成像传感器的同步数据，研究了闪电率是否与云顶高度的五次方成正比。这项研究的独特之处在于：（1）获得了瞬时而不是最大风暴高度与闪电率之间的关系;（2）使用了地球仪上不同地点和季节的相对无偏的完整数据集。雷暴高度与闪电率之间的关系是非线性的，方差很大。总体趋势表明，闪电率随风暴高度呈指数增长。一些高大的雷暴不会有大的闪光率，但相反的情况从来没有发生过。从标度律导出的五次幂依赖性与观测数据并不矛盾，但不一定是观测数据所必需的。
The relationship between cloud height and lightning activity is examined using data from the Tropical Rainfall Measuring Mission (TRMM) satellite. Coincident data from the precipitation radar (PR) and Lightning Imaging Sensor aboard the TRMM satellite are used to examine whether lightning flash rate is proportional to the fifth power of cloud top height. This study is unique in that (1) the relationship between instantaneous rather than maximum storm height and flash rate is obtained and (2) relatively unbiased full data sets for different locations and seasons over the globe are used. The relationship between thunderstorm height and flash rate is nonlinear with large variance. The overall trend shows that flash rate increases exponentially with storm height. Some tall thunderstorms do not have large flash rates, but the reverse situation never occurs. The fifth power dependency that is derived from scaling laws is not inconsistent with, but not necessarily required by, the observed data.