DOI: 10.1029/2018JD028637
Scopus记录号: 2-s2.0-85053371281
论文题名: Leader Polarity-Reversal Feature and Charge Structure of Three Upward Bipolar Lightning Flashes
作者: Shi D. ; Wang D. ; Wu T. ; Thomas R.J. ; Edens H.E. ; Rison W. ; Takagi N. ; Krehbiel P.R.
刊名: Journal of Geophysical Research: Atmospheres
ISSN: 2169897X
出版年: 2018
卷: 123, 期: 17 起始页码: 9430
结束页码: 9442
语种: 英语
英文关键词: charge structure
; Japanese winter thunderstorms
; leader polarity-reversal feature
; upward bipolar lightning
英文摘要: We have analyzed three upward bipolar lightning flashes (UBLFs) that occurred in Japanese winter thunderstorms. Leader polarity-reversal processes in three flashes share the same features. During the several tens of milliseconds (lightning A 56 ms, lightning B 21 ms, lightning C 67 ms) before the initiation of the polarity-reversal leader, one branch of the preceding leader in bipolar flashes was nearly decayed while other branches of the preceding leader were still in propagation. Then the polarity-reversal leader will be initiated at the end of the decayed branch of the preceding leader. Initial sources of the polarity-reversal leader are characterized by relatively strong very high frequency power (average value in lightning A, B, and C 24, 18, and 14 dBW) and obvious upward progression. Two of the three upward lightning (lightning A and B) occurred at a normal dipolar charge structure, while the remaining one (lightning C) occurred at an inverted dipolar charge structure. Based on the common features of the polarity-reversal leader and charge structure, we have proposed a scenario to interpret the process of upward bipolar lightning flashes. ©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/113176
Appears in Collections: 气候减缓与适应
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作者单位: Department of Electrical, Electronic and Computer Engineering, Gifu University, Gifu, Japan; Langmuir Laboratory for Atmospheric Research, Geophysical Research Center, New Mexico Institute of Mining and Technology, Socorro, NM, United States
Recommended Citation:
Shi D.,Wang D.,Wu T.,et al. Leader Polarity-Reversal Feature and Charge Structure of Three Upward Bipolar Lightning Flashes[J]. Journal of Geophysical Research: Atmospheres,2018-01-01,123(17)