DOI: 10.1002/2016GL068256
论文题名: Observation-constrained modeling of the ionospheric impact of negative sprites
作者: Liu N. ; Boggs L.D. ; Cummer S.A.
刊名: Geophysical Research Letters
ISSN: 0094-9241
EISSN: 1944-8972
出版年: 2016
卷: 43, 期: 6 起始页码: 2365
结束页码: 2373
语种: 英语
英文关键词: Atmospheric Gravity Waves
; Halos
; Ionosphere Perturbation
; Lightning
; Sprites
; Streamers
Scopus关键词: Charge transfer
; Clouds
; Gravity waves
; Ionosphere
; Ionospheric measurement
; Lightning
; Atmospheric gravity waves
; Charge Moment Change
; Cloud-to-ground lightning
; Halos
; Ionization coefficient
; Orders of magnitude
; Sprites
; Streamers
; Atmospheric ionization
; cloud to ground lightning
; gravity wave
; ionization
; ionosphere
; magnitude
; sprite
; thunderstorm
; timescale
; waveform analysis
; Florida [United States]
; United States
英文摘要: This paper reports observation and modeling of five negative sprites occurring above two Florida thunderstorms. The sprites were triggered by unusual types of negative cloud-to-ground (CG) lightning discharges with impulse charge moment change ranging from 600 to 1300 C km and charge transfer characterized by a timescale of 0.1-0.2 ms. The negative sprite typically consists of a few generally vertical elements that each contain a bright core and dimmer streamers extending from the core in both downward and upward directions. Modeling results using the measured charge moment change waveforms indicate that the lower ionosphere was significantly modified by the CGs and the lower ionospheric density might have been increased by nearly 4 orders of magnitude due to the most intense CG. Finally, streamer modeling results show that the ionospheric inhomogeneities produced by atmospheric gravity waves can initiate negative sprite streamers, assuming that they can modulate the ionization coefficient. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84977998299&doi=10.1002%2f2016GL068256&partnerID=40&md5=c84d3686c21b801fefad48093f3dca5f
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10204
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Physics and Space Sciences, Florida Institute of Technology, Melbourne, FL, United States
Recommended Citation:
Liu N.,Boggs L.D.,Cummer S.A.. Observation-constrained modeling of the ionospheric impact of negative sprites[J]. Geophysical Research Letters,2016-01-01,43(6).