globalchange  > 气候减缓与适应
DOI: 10.1002/2017JD027821
Scopus记录号: 2-s2.0-85042522311
论文题名:
Characteristics of Lightning Within Electrified Snowfall Events Using Lightning Mapping Arrays
作者: Schultz C.J.; Lang T.J.; Bruning E.C.; Calhoun K.M.; Harkema S.; Curtis N.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期:4
起始页码: 2347
结束页码: 2367
语种: 英语
英文关键词: electrification ; heavy snowfall ; lightning ; thundersnow
Scopus关键词: array ; cloud to ground lightning ; data set ; lightning ; observational method ; satellite data ; snow cover ; thunderstorm ; Alabama ; Oklahoma [United States] ; United States ; Washington [United States]
英文摘要: This study examined 34 lightning flashes within four separate thundersnow events derived from lightning mapping arrays (LMAs) in northern Alabama, central Oklahoma, and Washington DC. The goals were to characterize the in-cloud component of each lightning flash, as well as the correspondence between the LMA observations and lightning data taken from national lightning networks like the National Lightning Detection Network (NLDN). Individual flashes were examined in detail to highlight several observations within the data set. The study results demonstrated that the structures of these flashes were primarily normal polarity. The mean area encompassed by this set of flashes is 375 km2, with a maximum flash extent of 2,300 km2, a minimum of 3 km2, and a median of 128 km2. An average of 2.29 NLDN flashes were recorded per LMA-derived lightning flash. A maximum of 11 NLDN flashes were recorded in association with a single LMA-derived flash on 10 January 2011. Additionally, seven of the 34 flashes in the study contain zero NLDN-identified flashes. Eleven of the 34 flashes initiated from tall human-made objects (e.g., communication towers). In at least six lightning flashes, the NLDN detected a return stroke from the cloud back to the tower and not the initial upward leader. This study also discusses lightning's interaction with the human-built environment and provides an example of lightning within heavy snowfall observed by Geostationary Operational Environmental Satellite-16's Geostationary Lightning Mapper. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114453
Appears in Collections:气候减缓与适应

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作者单位: NASA Marshall Space Flight Center, Huntsville, AL, United States; Department of Geosciences, Texas Tech University, Lubbock, TX, United States; Cooperative Institute for Mesoscale Meteorological Studies, and NOAA/OAR/National Severe Storms Laboratory, Norman, OK, United States; Department of Atmospheric Science, The University of Alabama-Huntsville, Huntsville, AL, United States

Recommended Citation:
Schultz C.J.,Lang T.J.,Bruning E.C.,et al. Characteristics of Lightning Within Electrified Snowfall Events Using Lightning Mapping Arrays[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(4)
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