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Temporal-Spatial Characteristics of Lightning Activity and Lightning Disaster over Beijing

Guo Hu Xiong Yajun Fu Zongyu Hu Haibo(Beijing Meteorological Observatory,Beijing 100089)  
By using 1995-2005 lightning disaster data and 1995-2002 LIS/OTD lightning data over Beijing,a contrast analysis of lightning activity with lightning disaster in temporal and spatial characteristics over Beijing was conducted.Results show that the diurnal variation of lightning activity and lightning disaster is generally agreement.The disagreement might be a result of human behavior and electrical/magnetical environment.The seasonal variation is also generally accordant.In summer,the peak period of lightning disaster is in August,but most lightning activity occurs in July.This research also shows that the spatial characteristics of lightning activity with lightning disaster are obviously different.There are more lightning activities in the north of Beijing but less lightning disasters.By contraries,there are less lightning activities but more lightning disasters over the periphery of the city.Based on the economic and population data of eighteen boroughs,further analysis shows that lightning activity is only one of reasons which lead to lightning disasters.The lightning disaster is also related to economic development and population density.
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