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DOI | 10.1016/j.atmosres.2017.06.029 |
Spatial-temporal characteristics of lightning flash size in a supercell storm | |
Zhang, Zhixiao1,2; Zheng, Dong1,2; Zhang, Yijun1,2; Lu, Gaopeng3,4,5 | |
2017-11-15 | |
发表期刊 | ATMOSPHERIC RESEARCH
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ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2017 |
卷号 | 197 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | The flash sizes of a supercell storm, in New Mexico on October 5, 2004, are studied using the observations from the New Mexico Lightning Mapping Array and the Albuquerque, New Mexico, Doppler radar (KABX). First, during the temporal evolution of the supercell, the mean flash size is anti-correlated with the flash rate, following a unary power function, with a correlation coefficient of -0.87. In addition, the mean flash size is linearly correlated with the area of reflectivity > 30 dBZ at 5 km normalized by the flash rate, with a correlation coefficient of 0.88. Second, in the horizontal, flash size increases along the direction from the region near the convection zone to the adjacent forward anvil. The region of minimum flash size usually corresponds to the region of maximum flash initiation and extent density. The horizontal correspondence between the mean flash size and the flash extent density can also be fitted by a unary power function, and the correlation coefficient is > 0.5 in 50% of the radar volume scans. Furthermore, the quality of fit is positively correlated to the convective intensity. Third, in the vertical direction, the height of the maximum flash initiation density is close to the height of maximum flash extent density, but corresponds to the height where the mean flash size is relatively small. In the discussion, the distribution of the small and dense charge regions when and where convection is vigorous in the storm, is deduced to be responsible for the relationship that flash size is temporally and spatially anti-correlated with flash rate and density, and the convective intensity. |
英文关键词 | Supercell Flash size Flash rate Flash initiation Flash extent density |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000412250700016 |
WOS关键词 | THUNDERSTORM ELECTRIFICATION ; HYDROMETEOR CLASSIFICATION ; RADAR DATA ; EVOLUTION ; CHARGE ; HAILSTORM |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/15160 |
专题 | 地球科学 |
作者单位 | 1.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing 100081, Peoples R China; 2.Chinese Acad Meteorol Sci, Lab Lightning Phys & Protect Engn, Beijing 100081, Peoples R China; 3.Chinese Acad Sci, Inst Atmospher Phys, Key Lab Middle Atmosphere & Global Environm Obser, Beijing 100029, Peoples R China; 4.Nanjing Univ Informat Sci & Technol, Collaborat Innovat Ctr Forecast & Evaluat Meteoro, Nanjing 210044, Jiangsu, Peoples R China; 5.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Numer Modeling Atmospher Sci & Geop, Beijing 100029, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Zhixiao,Zheng, Dong,Zhang, Yijun,et al. Spatial-temporal characteristics of lightning flash size in a supercell storm[J]. ATMOSPHERIC RESEARCH,2017,197. |
APA | Zhang, Zhixiao,Zheng, Dong,Zhang, Yijun,&Lu, Gaopeng.(2017).Spatial-temporal characteristics of lightning flash size in a supercell storm.ATMOSPHERIC RESEARCH,197. |
MLA | Zhang, Zhixiao,et al."Spatial-temporal characteristics of lightning flash size in a supercell storm".ATMOSPHERIC RESEARCH 197(2017). |
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