摘要
利用WWLLN闪电资料、NOAA地形资料,分析了2010~2018年云南地区闪电活动的时空分布特征,结果表明:云南地区闪电活动总体呈东南多、西北少的分布特征,地形与海拔高度共同影响着闪电活动的空间分布,且地势较海拔的作用更为突出。受纬度、季风和日照等因素影响,北回归线附近的闪电活动夏半年多于冬半年,闪电活动在夏季达到峰值,纬度较高的滇东、滇中以北大部分地区闪电活动呈单峰型月分布,而纬度较低的滇南和滇西的闪电活动则呈双峰型月分布,闪电活动的日变化与深对流活动特征一致。本研究进一步了解了雷电灾害的活动规律,加深了地形和季风对云南闪电活动影响的认识,为该地区雷电预警与防护提供参考。
Using WWLLN lightning data and NOAA terrain data, the temporal and spatial distribution characteristics of lightning activities in Yunnan from 2010 to 2018 are analyzed. The results show that the overall distribution characteristics of lightning activities in Yunnan are more in the southeast and less in the northwest. Terrain and altitude together affect the spatial distribution of lightning activities, and the role of terrain is more prominent than altitude. Influenced by altitude, monsoon and sunshine, the lightning activity near the Tropic of cancer is more in summer half year than in winter half year, and the lightning activity reaches the peak in summer. The lightning activity in parts of eastern and central Yunnan with higher latitude is single peak monthly distribution, while the lightning activity in southern and western Yunnan with lower latitude is double peak monthly distribution. The diurnal variation of lightning activity and the characteristics of deep convection activity signs are consistent. This research further understood the activity law of lightning disaster, deepened the understanding of the influence of topography and monsoon on lightning activity in Yunnan, and provided reference for lightning early warning and protection in this area.
作者
陶心怡
赵阳
谢屹然
孔祥贞
TAO Xinyi;ZHAO Yang;XIE Yiran;KONG Xiangzhen(Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disaster,Nanjing University of Information Science&Technology,Nanjing 210044,China;School of Atmospheric Physics,Nanjing University of Information Science&Technology,Nanjing 210044,China;Yunnan Meteorological Bureau,Kunming 650034,China)
出处
《电瓷避雷器》
CAS
北大核心
2021年第5期100-106,共7页
Insulators and Surge Arresters
基金
第二次青藏高原综合科学考察研究项目(编号:2019QZKK0104)
国家自然科学基金面上项目(编号:41875002,41975003)
南京信息工程大学人才启动项目(编号:2243141601008,2243141601009)。
关键词
闪电活动
地形
海拔
季风
lightning activity
terrain
altitude
monsoon
