大气科学2025，Vol.49Issue(5)：1284-1294,11.DOI:10.3878/j.issn.1006-9895.2412.24048
气溶胶对区域闪电活动的影响差异:基于闪电日变化特征分型
Differences in the Impact of Aerosols on Regional Lightning Activity:Based on Classification of Lightning Diurnal Variation Characteristics
摘要
Abstract
This study investigated the relationship between lightning activity and aerosols in the Sichuan Basin(Region 1)and Guangdong region(Region 2)by analyzing 9-year(2010-2018)summer datasets of cloud-to-ground(CG)lightning and aerosol optical depth(AOD)data.The results indicate that AOD and CG lightning flashes in both regions are nonlinearly related,with AOD thresholds of about 0.5 and 0.3,respectively.When AOD is below the threshold,the CG lightning flashes in both regions increase with increasing AOD.When AOD exceeds the thresholds,the relationship between the CG lightning flashes and AOD is scattered in both regions.However,in Region 1,the number of CG lightning flashes still increases overall with increasing AOD.In contrast,in Region 2,the CG lightning flashes initially show no significant change and then decrease with increasing AOD.In Region 1,the relationship between lightning activity and aerosols is primarily determined by the relationship between lightning occurring at night and aerosols.In Region 2,the relationship is mainly determined by the relationship between lightning occurring in the afternoon and aerosols.Because the radiative suppression effect of aerosols is stronger during the day and weaker at night,this may lead to different relationships between lightning activity and aerosols under high aerosol conditions in Region 1 and Region 2.Furthermore,the diurnal variation of CG lightning flashes in Regions 1 and 2 shows bimodal and unimodal forms,respectively,under various aerosol loading conditions.Under high aerosol loading conditions,the evening peak over Region 1 and the afternoon peak over Region 2 are delayed.关键词
闪电活动/气溶胶/辐射效应/日变化Key words
Lightning activity/Aerosol/Radiative effects/Diurnal variation分类
天文与地球科学引用本文复制引用
汪海潮,谭涌波,师正,郑天雪..气溶胶对区域闪电活动的影响差异:基于闪电日变化特征分型[J].大气科学,2025,49(5):1284-1294,11.基金项目
国家自然科学基金项目42275075、42505083,中国气象科学研究院基本科研业务费项目2024Y003,江苏省气象局科研项目ZD202412,江苏省研究生科研创新计划项目KYCX23_1326,灾害天气国家重点实验室开放课题2024LASW-B09 National Natural Science Foundation of China(Grant 42275075,42505083),Basic Research Fund of Chinese Academy of Meteorological Sciences(Grant 2024Y003),Research Project of Jiangsu Meteorological Bureau(Grant ZD202412),Jiangsu Province Graduate Research Innovation Program(Grant KYCX23_1326),Open Grants of State Key Laboratory of Severe Weather(Grant 2024LASW-B09) （Grant 42275075,42505083）
