中国空气污染地区气溶胶与地闪活动关系研究  

Relationship Between Aerosol and Cloud-to-Ground Lightning Activity in Air Polluted Areas of China

作　　者：汪海潮 师正[1] 林琪 李璐滢 林晓彤 游赛男 顾雯怡 胡子严 WANG Haichao;SHI Zheng;LIN Qi;LI Luying;LIN Xiaotong;YOU Sainan;GU Wenyi;HU Ziyan(Key Laboratory of Meteorological Disaster,Ministry of Education(KLME)/Joint International Research Laboratory of Climate and Environment Change(ILCEC)/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters(CIC-FEMD)/Key Laboratory for Aerosol and Cloud-Precipitation of China Meteorological Administration,Nanjing University of Information Science&Technology,Nanjing 210044,China)

机构地区：[1]南京信息工程大学气象灾害教育部重点实验室/气候与环境变化国际合作联合实验室/气象灾害预报预警与评估协同创新中心/中国气象局气溶胶与云降水重点开放实验室,南京210044

出　　处：《电瓷避雷器》2022年第6期98-104,共7页Insulators and Surge Arresters

基　　金：国家自然科学基金项目(编号:41805002);江苏省自然科学基金项目(编号:BK20180808);江苏省高等学校自然科学研究项目(编号:18KJB170010);南京信息工程大学人才启动项目(编号:2016r042);南京信息工程大学大学生创新项目(编号:201910300160)资助。

摘　　要：基于9年地闪观测资料、气溶胶光学厚度(AOD)、对流有效位能(CAPE)和地面相对湿度(SRH)资料,对中国三个空气污染地区(R1,R2和R3)地闪密度对气溶胶浓度的响应进行了分析。结果表明,三个研究区域在不同季节以及夏季大部分地区污染条件(高AOD)下的地闪密度比清洁条件(低AOD)下的地闪密度更大,说明气溶胶可能通过云微物理作用促进三个研究区域的地闪活动。在减弱了CAPE和SRH的干扰后,气溶胶对R1和R2地闪密度仍有明显的增强作用,并且在高CAPE和SRH的条件下更显著,而气溶胶在R2地区对地闪密度的影响变得不明显,说明气溶胶对地闪密度的影响会受到CAPE和SRH等气象因素的干扰,并且高CAPE和SRH的条件更有利于气溶胶对地闪活动的增强作用。Based on nine years cloud-to-ground(CG)lightning data,aerosol optical depth(AOD),convective available potential energy(CAPE),and surface relative humidity(SRH)data,the responses of CG lightning density to AOD over three air polluted areas in China are analyzed.The results indicate that the CG lightning density under polluted conditions(high AOD)is larger than that under clean conditions(low AOD)over the different seasons and most areas of the three study regions.This suggests the aerosol may invigorate the CG lightning over the study regions through aerosol microphysical effects.After reducing the effects of CAPE and SRH,the aerosol still has an enhanced effect on CG lightning density over R1 and R3 and this effect is more significant under high CAPE and SRH conditions,but the effect of aerosol on CG lightning density over R2 is weaker.This indicates that the effects of CAPE and SRH may disturb the effects of aerosol on CG lightning,and the conditions with high CAPE and high SRH may be prone to the enhancing effect of aerosol on CG lightning.

关 键 词：闪电活动 地闪 气溶胶 云微物理 

分 类 号：X513[环境科学与工程—环境工程] P427.3[天文地球—大气科学及气象学]