A Comparison of Lightning Activity and Convective Indices over Some Areas of China
Using the lightning localization data observed by TRMM’s Lightning Imaging Sensor (LIS), the relationship between lightning activity and a series of convective indices is researched for some areas in China. The convective indices are calculated based on air instability and convective potential analysis methods. Correlation analysis is made for convective indices and corresponding lightning features including lightning frequency and probability. The results show that the higher lightning probability is associated with higher convective energy, more unstable air, nearly saturated lower layer, and smaller vertical wind shear. Both eastern China and southern China show the best correlation between lightning activity and convective indices. Moisture plays a more important role in the convective development of thunderstorms in southern China than in eastern China. A monsoon convective index is developed, and it is good at describing the lightning trend from April to June in southern China. A regression formula is developed for forecasting lightning probability based on convective indices.
Jianhua Dai Yuan Wang Jianfeng Gu Lei Chen Zhi Wang
Department of Atmospheric Sciences, Key Laboratory of Mesoscale Severe Weather of Ministry of Educat Department of Atmospheric Sciences, Key Laboratory of Mesoscale Severe Weather of Ministry of Educat Shanghai Meteorological Center, Shanghai Meteorological Bureau, Shanghai 200030, China
国际会议
第13届国际大气电学会议(The 13th International Conference on Atmospheric Electricity)
北京
英文
2007-08-13（万方平台首次上网日期，不代表论文的发表时间）