气候变化领域集成服务门户(CCPortal): Total lightning signatures of thunderstorms and lightning jumps in hailfall nowcasting in the Beijing area

CCPortal

DOI	10.1016/j.atmosres.2019.104646
	Total lightning signatures of thunderstorms and lightning jumps in hailfall nowcasting in the Beijing area
	Tian Y.; Qie X.; Sun Y.; Wang D.; Yuan S.; Sun Z.; Lu G.; Yu L.; Sun H.; Li L.; Du C.
发表日期	2019
ISSN	0169-8095
卷号	230
英文摘要	Based on total lightning location data from the Beijing Lightning Network (BLNET) and hailfall reports from 2015 to 2017 in Beijing, as well as S-band radar data from the Beijing Meteorological Observation Center, the total lightning activities for 148 hailfall events are analyzed with the identification method of strong convective cells (CCs) (similar to Thunderstorm Identification Tracking Analysis and Nowcasting, TITAN). Most of the hailstorms have a very high flash rate (FR), and a significant increase in FR is observed before hailfall events. The 2σ lightning jump (LJ) algorithm (with 4 and 10 flashes/min activation thresholds for different districts of Beijing) is tested as a hailfall nowcasting predictor. The average LJ lead time is 27.1 min. LJs precede 81.8% of all hailfall events, and 38.6% of LJs are not followed by hailfall reports within one hour. The merging of two adjacent strong CCs usually forms hail-bearing severe thunderstorms producing a sudden increase in total lightning. In addition, most hailfall events occurred at the boundary of strong CCs instead of at the cell centers. This study shows that the total LJ is a potentially useful predictor for hail nowcasts in the Beijing area. © 2019 Beijing Meteorological Observation Center, Beijing Meteorological Service
英文关键词	Hail; Lightning jump; Radar reflectivity; Strong convective cell; Total lightning
语种	英语
scopus关键词	Precipitation (meteorology); Radar; Thunderstorms; Activation thresholds; Cell centers; Convective cell; Identification method; Meteorological observation; Radar reflectivities; Total lightning; Tracking analysis; Lightning; atmospheric convection; hail; lightning; nowcasting; reflectivity; thunderstorm; Beijing [Beijing (ADS)]; Beijing [China]; China
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/162256
作者单位	Beijing Meteorological Observation Center, Beijing Meteorological Service, Beijing, 100089, China; Key Laboratory of Middle Atmosphere and Global Environment Observation (LAGEO), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Institute of Urban Meteorology, China Meteorological Administration, Beijing, 100089, China; Key Laboratory of Cloud-Precipitation and Severe Storms, Center of Disaster Reduction, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; State Key Laboratory of Atmospheric Boundary Layer Physics and Atmospheric Chemistry (LAPC), Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; University of Chinese Academy of Sciences, Beijing, 100049, China; College of Earth and Planetary Science, University of Chinese Academy of Science, Beijing, China
推荐引用方式 GB/T 7714	Tian Y.,Qie X.,Sun Y.,et al. Total lightning signatures of thunderstorms and lightning jumps in hailfall nowcasting in the Beijing area[J],2019,230.
APA	Tian Y..,Qie X..,Sun Y..,Wang D..,Yuan S..,...&Du C..(2019).Total lightning signatures of thunderstorms and lightning jumps in hailfall nowcasting in the Beijing area.Atmospheric Research,230.
MLA	Tian Y.,et al."Total lightning signatures of thunderstorms and lightning jumps in hailfall nowcasting in the Beijing area".Atmospheric Research 230(2019).