气候变化领域集成服务门户(CCPortal): A verification of the lightning detection data from FY-4A LMI as compared with ADTD-2

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DOI	10.1016/j.atmosres.2020.105163
	A verification of the lightning detection data from FY-4A LMI as compared with ADTD-2
	Liu Y.; Wang H.; Li Z.; Wang Z.
发表日期	2021
ISSN	0169-8095
卷号	248
英文摘要	In this paper the match percentage (MP) of lightning frequency in Jiangsu, China from June to August in 2019 is analyzed, by comparing the lightning mapping imager (LMI) data from FengYun (FY)-4A geostationary meteorological satellite with the Advanced Direction and Time-of-arrival Detecting (ADTD)-2 total lightning location data and radar composite reflectivity. The results show that the MP increases with the spatial matching window, yet when the matching window is larger than 0.8° (~80 km), the MP tends to be stable. Furthermore, the spatial distribution of lightning and the characteristics of the match lightning (ML) current are analyzed. The horizontal detection error of LMI for isolated thunderstorm clusters is about 0.15 ± 0.003° (~15 km). The amplitude of the lightning current is an important but not the only factor affecting the satellite's detection efficiency. Through the 10 min analysis of a large-scale and long-term thunderstorm process in Jiangsu province on July 6, 2019, it is found that the lightning detected by LMI and ADTD-2 occurred mostly in the region with strong echoes above 40 dBZ or in its vicinity. With the development of the thunderstorm, the lightning detected by ADTD-2 gradually increased and reached a maximum at 14:40. Subsequently, with the weakening of the thunderstorm system the lightning detected by ADTD-2 gradually decreased. However, the lightning detected by LMI was less all the time before 18:30 and then increased gradually. In the fourth stage (19:40 on July 6–00:20 on July 7), LMI has the highest relative detection efficiency of 12.78%–14.66% using ADTD-2 as a reference, indicating that the satellite detection is relatively less efficient during the daytime. © 2020 Elsevier B.V.
英文关键词	FengYun (FY)-4A; Lightning mapping imager (LMI); Verification
语种	英语
scopus关键词	Efficiency; Geostationary satellites; Linear matrix inequalities; Thunderstorms; Composite reflectivity; Detection efficiency; Geostationary meteorological satellites; Jiangsu province; Lightning currents; Lightning detection; Lightning frequency; Satellite detection; Lightning; arrival time; detection method; geostationary satellite; lightning; mapping method; satellite data; spatial distribution; thunderstorm; China; Jiangsu
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/141724
作者单位	Key Laboratory of Transportation Meteorology, China Meteorological Administration, Nanjing, 210009, China; Jiangsu Institute of Meteorological Sciences, Nanjing, 210009, China; Nanjing Joint Institute for Atmospheric Sciences, Nanjing, 210009, China; Jiangsu Meteorological Disaster Prevention Technology Center, Nanjing, 210009, China; School of Atmospheric Physics, Nanjing University of Information Science & Technology, Nanjing, 210044, China
推荐引用方式 GB/T 7714	Liu Y.,Wang H.,Li Z.,et al. A verification of the lightning detection data from FY-4A LMI as compared with ADTD-2[J],2021,248.
APA	Liu Y.,Wang H.,Li Z.,&Wang Z..(2021).A verification of the lightning detection data from FY-4A LMI as compared with ADTD-2.Atmospheric Research,248.
MLA	Liu Y.,et al."A verification of the lightning detection data from FY-4A LMI as compared with ADTD-2".Atmospheric Research 248(2021).