气候变化领域集成服务门户(CCPortal): Spatiotemporal Distributions of the Thunderstorm and Lightning Structures over the Qinghai-Tibet Plateau

CCPortal

DOI	10.3390/rs16030468
	Spatiotemporal Distributions of the Thunderstorm and Lightning Structures over the Qinghai-Tibet Plateau
	Du, Yangxingyi; Zheng, Dong; Zhang, Yijun; Yao, Wen; Xu, Liangtao; Fang, Xianggui
发表日期	2024
EISSN	2072-4292
卷号	16 期号:3
英文摘要	Utilizing data from the Tropical Rainfall Measuring Mission (TRMM) satellite's precipitation radar (PR) and lightning imaging sensor (LIS), this study explores the spatiotemporal distributions of thunderstorm and lightning structures over the Qinghai-Tibet Plateau (QTP), an aspect that has not been explored previously. The structural aspects are crucial when considering the impact of thunderstorm and lightning activity in the atmospheric processes. Thunderstorms over the QTP show clear spatial variations in both vertical height and horizontal extension. In the southern region, the average heights of 20 dBZ and 30 dBZ echo tops typically exceed 11.2 and 9.3 km, respectively. Meanwhile, in the eastern part, the average coverage areas for reflectivity greater than 20 dBZ and 30 dBZ consistently surpass 1000 and 180 km2, respectively. The spatial distribution of thunderstorm vertical development height relative to the surface aligns more closely with the horizontal extension, indicating stronger convection in the eastern QTP. The thunderstorm flash rate shows an eastward and northward prevalence, while the thunderstorm flash density peaks in the western and northeastern QTP, with a minimum in the southeast. Furthermore, in the eastern QTP, lightning duration, spatial expansion, and radiance are more pronounced, with the average values typically exceeding 0.22 s, 14.5 km, and 0.50 J m-2 sr-1 mu m-1, respectively. Monthly variations reveal heightened values during the summer season for thunderstorm vertical extension, areas with reflectivity greater than 30 dBZ, and lightning frequency. Diurnal variations highlight an afternoon increase in thunderstorm vertical and horizontal extension, lightning frequency, duration, and spatial scale. From a statistical perspective, under weak convective conditions, lightning length exhibits a positive correlation with thunderstorm convection intensity, contrasting with the opposite relationship suggested by previous studies. This article further analyzes and discusses the correlations between various thunderstorm and lightning structural parameters, enhancing our understanding of the distinctive features of thunderstorm and lightning activities in the QTP.
关键词	Qinghai-Tibet Plateau thunderstorm vertical development thunderstorm horizontal extension flash duration flash spatial extension flash radiance
英文关键词	DEEP CONVECTIVE SYSTEMS; MEASURING MISSION TRMM; DIURNAL-VARIATION; REGION; FLASHES; RADAR; PATTERN; SENSOR; CHARGE; STORM
WOS研究方向	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS记录号	WOS:001160311500001
来源期刊	REMOTE SENSING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/282846
作者单位	China Meteorological Administration; Chinese Academy of Meteorological Sciences (CAMS); Nanjing University of Information Science & Technology; Fudan University
推荐引用方式 GB/T 7714	Du, Yangxingyi,Zheng, Dong,Zhang, Yijun,et al. Spatiotemporal Distributions of the Thunderstorm and Lightning Structures over the Qinghai-Tibet Plateau[J],2024,16(3).
APA	Du, Yangxingyi,Zheng, Dong,Zhang, Yijun,Yao, Wen,Xu, Liangtao,&Fang, Xianggui.(2024).Spatiotemporal Distributions of the Thunderstorm and Lightning Structures over the Qinghai-Tibet Plateau.REMOTE SENSING,16(3).
MLA	Du, Yangxingyi,et al."Spatiotemporal Distributions of the Thunderstorm and Lightning Structures over the Qinghai-Tibet Plateau".REMOTE SENSING 16.3(2024).