DOI: 10.1002/2017JD026536
Scopus记录号: 2-s2.0-85041001145
论文题名: Lightning Evolution In Two North Central Florida Summer Multicell Storms and Three Winter/Spring Frontal Storms
作者: Caicedo J.A. ; Uman M.A. ; Pilkey J.T.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 2 起始页码: 1155
结束页码: 1178
语种: 英语
英文关键词: evolution
; Florida
; lightning
; LMA
; radar
; winter/spring
Scopus关键词: air temperature
; geographical region
; isotherm
; lightning
; radar
; reflectivity
; storm
; stratiform cloud
; summer
; temperature gradient
; Florida [United States]
; United States
英文摘要: We present the first lightning evolution studies, via the Lightning Mapping Array (LMA) and radar, performed in North Central Florida. Parts of three winter/spring frontal storms (cold season) and two complete summer (warm season) multicell storms are studied. Storm parameters measured are as follows: total number of flashes, flash-type classification, first flashes, flash initiation altitude, flash initiation power, flash rate (flashes per minute), charge structure, altitude and temperature ranges of the inferred charge regions, atmospheric isotherm altitude, radar base reflectivity (dBZ), and radar echo tops (EET). Several differences were found between summer multicell and winter/spring frontal storms in North Central Florida: (1) in winter/spring storms, the range of altitudes that all charge regions occupy is up to 1 km lower in altitude than in summer storms, as are the 0°C, −10°C, and −20°C isotherms; (2) lightning activity in summer storms is highly correlated with changes in radar signatures, in particular, echo tops; and (3) the LMA average initiation power of all flash types in winter/frontal storms is about an order of magnitude larger than that for summer storms. In relation to storms in other geographical locations, North Central Florida seasonal storms were found to have similarities in most parameters studied with a few differences, examples in Florida being (1) colder initiation altitudes for intracloud flashes, (2) charge regions occupying larger ranges of atmospheric temperatures, and (3) winter/spring frontal storms not having much lightning activity in the stratiform region. ©2018. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/114669
Appears in Collections: 气候减缓与适应
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作者单位: Department of Electrical and Computer Engineering, University of Florida, Gainesville, FL, United States; Sandia National Laboratories, Albuquerque, NM, United States
Recommended Citation:
Caicedo J.A.,Uman M.A.,Pilkey J.T.. Lightning Evolution In Two North Central Florida Summer Multicell Storms and Three Winter/Spring Frontal Storms[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(2)