本文選題：閃電密度 + 氣溶膠　； 參考：《電瓷避雷器》2016年06期

【摘要】：基于閃電衛(wèi)星和地面觀測資料、氣溶膠光學(xué)厚度(aerosol optical depth,簡稱AOD)衛(wèi)星觀測資料,對南京地區(qū)閃電活動對氣溶膠濃度變化的響應(yīng)進(jìn)行了分析。結(jié)果表明,夏季年平均閃電密度與夏季年平均AOD呈明顯負(fù)相關(guān)(R=-0.634),與此同時,地面氣溫、對流有效位能(CAPE,convective available potential energy)及雷暴日與AOD均呈顯著負(fù)相關(guān)(R=-0.748,-0.741,-0.744),表明南京地區(qū),氣溶膠可能通過輻射效應(yīng),致使地面溫度降低,對流活動減弱,從而使得閃電活動降低。除此之外,南京地區(qū)夏季年平均正地閃比例(正地閃數(shù)占總地閃數(shù)的比例)隨AOD呈一定的上升趨勢,說明氣溶膠可通過微物理效應(yīng),改變雷暴云中電荷結(jié)構(gòu)分布,從而使得正地閃的產(chǎn)生概率增大。
[Abstract]:Based on the lightning satellite and ground observation data, the response of lightning activity to aerosol concentration in Nanjing area was analyzed by aerosol optical depth satellite data. The results show that there is a significant negative correlation between the annual lightning density in summer and the annual average AOD in summer. At the same time, the surface air temperature, convective available potential energy (CAPEE) and thunderstorm day are all negatively correlated with AOD. The aerosol may reduce the surface temperature and convection activity through radiation effect, thus reducing the lightning activity. In addition, the average annual positive lightning ratio (the proportion of positive ground lightning number to total ground flash number) in summer in Nanjing area shows an increasing trend with AOD, which indicates that aerosol can change the distribution of charge structure in thunderstorm cloud through microphysical effect. Thus, the probability of positive ground flicker is increased.
【作者單位】： 南京信息工程大學(xué)氣象災(zāi)害預(yù)報(bào)預(yù)警與評估協(xié)同創(chuàng)新中心;南京信息工程大學(xué)中國氣象局氣溶膠與云降水重點(diǎn)開放實(shí)驗(yàn)室;西藏阿里地區(qū)改則縣氣象局;
【基金】：國家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃項(xiàng)目(編號:2014CB441403) 國家自然基金項(xiàng)目(編號:41475006)
【分類號】：P427.3;X513

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