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Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (29): 155-160.doi: 10.11924/j.issn.1000-6850.casb16040172

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Lightning: Characteristics Analysis and Application in Anhui During 2010-2012

曹辉   

  • Received:2016-04-28 Revised:2016-09-29 Accepted:2016-08-10 Online:2016-10-12 Published:2016-10-12

Abstract: In order to reduce life and financial losses caused by lightning, the research was carried out to explore the temporal and spatial distribution characteristics of lighting and its application in Anhui. Excel, Origin and Surfer software were adopted as statistical tools to analyze the daily lightning data in Anhui from March 2010 to December 2012. The results showed that: Anhui was dominated by negative lightning; the lightning was characterized by monthly unimodal change, more frequently in warm season while fewer in cold season; lightning happened most frequently in July, and concentrated between June to September; as for daily change, the positive peak and negative peak appeared from 1 to 3 o’clock and 15 to 17 o’clock, respectively; convective weather mostly concentrated from 14 to 18 o’clock; lightning intensity was high in warm season while low in cold season, the lightening intensity per month is 46.2 kA, positive lightening and negative lightening peak in July and June respectively, which is in accordance with the occurrence rate of positive and negative lightening above 30 kA, positive and negative lightening intensity mainly ranges from 0 to 30 kA; in terms of spatial distribution, the borders among plain, hilly and mountain showed the highest annual average lightning intensity and density, and were also the key places to prevent lightning disaster in Anhui. Based on the data related to the relationship between lightning and thunderstorm days, the authors derived a formula applicable to calculate the ground lightening density of 16 cities in Anhui. The results were of important practical significance for guiding the local industrial and agricultural production as well as engineering construction.