大气科学2025，Vol.49Issue(2)：313-324,12.DOI:10.3878/j.issn.1006-9895.2308.23048
中国陆地闪电时空分布与大气环境要素关系的分析
Analysis of the Relationship between the Spatiotemporal Distribution of Land Lightning and Atmospheric Environmental Factors in China
摘要
Abstract
From 2013 to 2017,lightning data from WWLLN(Worldwide Lightning Location Network)was combined with ERA-5(the fifth-generation reanalysis data from the European Centre for Medium-Range Weather Forecasts)to study lightning activity across different regions of Chinese mainland.The research analyzed the relationship between lightning and meteorological factors,including CAPE(convective available potential energy),precipitation(P),CIN(convective inhibition),and RH(relative humidity),focusing on spatial and temporal distributions and their quantitative correlations.The results indicate that lightning has a good correlation with CAPE,P,and CAPE×P in time and space.Lightning activity is most likely to occur when CIN is appropriately small and CAPE is sufficiently high.Higher CAPE values generally lead to increased lightning activity,while smaller inhibition energy promotes convection,thereby increasing the likelihood of lightning.However,CIN should not be too small,as excessively low CIN values result in reduced lightning activity.A low CIN value alone is not sufficient for lightning;a high RH is also required.The study found that lightning activity typically occurs in environments with RH levels between 60％and 90％.If RH continues to increase beyond this range,lightning activity will decrease.Even under high CIN conditions,significant lightning activity can still occur if both moisture and CAPE conditions are favorable.关键词
闪电/对流有效位能/降水/对流抑制能/相对湿度Key words
Lightning/Convective available potential energy/Precipitation/Convective inhibition/Relative humidity分类
大气科学引用本文复制引用
赵阳,阎金磊,脱宇峰,孔祥贞,毕李霞..中国陆地闪电时空分布与大气环境要素关系的分析[J].大气科学,2025,49(2):313-324,12.基金项目
第二次青藏高原综合科学考察研究项目2019QZKK0104,国家自然科学基金面上项目41875002 Funded by The Second Tibetan Plateau Scientific Expedition and Research Program(STEP)(Grant 2019QZKK0104),The General Program of National Natural Science Foundation of China(Grant 41875002) （STEP）
