GSTDTAP  > 气候变化
DOI10.1002/2017JD027569
Investigation of Lightning Flash Locations in Isolated Convection Using LMA Observations
Fuchs, Brody R.; Rutledge, Steven A.
2018-06-16
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
EISSN2169-8996
出版年2018
卷号123期号:11页码:6158-6174
文章类型Article
语种英语
国家USA
英文摘要

Using Lightning Mapping Arrays (LMAs), lightning flash locations in three dimensions have been investigated using multiple methods. Approximately 500,000 flashes were analyzed to reveal the variability of lightning initiation and propagation within convective storms. These flashes were produced by over 4,000 isolated convective storms during one warm season across diverse weather regimes in northern Alabama, Washington, D.C., central Oklahoma, and northeastern Colorado. Lightning locations are analyzed within the context of radar reflectivities and examined for vertical variability. Results show that storms in Colorado preferentially produced flashes at lower altitudes and in regions of higher reflectivity compared to the other regions. The regional differences in flash altitudes are largely attributed to the prevalence of anomalous polarity storms (middle- or low-level dominant positive charge) in Colorado, as anomalous storms produced a majority of flashes at lower altitudes compared to storms with normal polarity charge structures (middle-level negative charge). Conversely, anomalous storms are exceedingly rare in the other regions of study. The differences in flash altitudes are coincident with discrepancies between annual average densities estimated by satellite observations and LMA. Specifically, large differences in annual average flash density estimates exist in northeastern Colorado, which are not present in the other regions, suggesting that the lower altitude flashes in Colorado may be more difficult to detect by satellites.


英文关键词lightning microphysics satellite detection atmospheric chemistry
领域气候变化
收录类别SCI-E
WOS记录号WOS:000436110800024
WOS关键词TROPOSPHERIC OZONE PRODUCTION ; CONTINENTAL UNITED-STATES ; CHARGE STRUCTURE ; MAPPING ARRAY ; STERAO-A ; MODEL SIMULATIONS ; GENERATED NOX ; THUNDERSTORM ; STEPS ; SATELLITE
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/33602
专题气候变化
作者单位Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA
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Fuchs, Brody R.,Rutledge, Steven A.. Investigation of Lightning Flash Locations in Isolated Convection Using LMA Observations[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(11):6158-6174.
APA Fuchs, Brody R.,&Rutledge, Steven A..(2018).Investigation of Lightning Flash Locations in Isolated Convection Using LMA Observations.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(11),6158-6174.
MLA Fuchs, Brody R.,et al."Investigation of Lightning Flash Locations in Isolated Convection Using LMA Observations".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.11(2018):6158-6174.
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