气候变化领域集成服务门户(CCPortal): Dancing Sprites Above a Lightning Mapping Array—An Analysis of the Storm and Flash/Sprite Developments

CCPortal

DOI	10.1029/2021JD035059
	Dancing Sprites Above a Lightning Mapping Array—An Analysis of the Storm and Flash/Sprite Developments
	Tomicic M.; Soula S.; Defer E.; Prieur S.; Mlynarczyk J.; Farges T.; Chanrion O.; Köhn C.; Neubert T.
发表日期	2021
ISSN	2169-897X
卷号	126 期号:20
英文摘要	One of the most enigmatic types of sprites is the dancing sprite which appears to dance above the storm as sequential luminous emissions a few 100 ms or less apart. Dancing sprites occur in relatively small proportion and many aspects of their generation remain unknown. We present a multi-instrumental analysis of a 20-hr duration Mesoscale Convective System (MCS) over the northwestern Mediterranean Sea on September 21, 2019, that produced 21 sprites recorded with a video camera, of which 19 (90 (Formula presented.)) were dancing sprites. The asymmetric trailing stratiform MCS developed in strong convective conditions having a CAPE of 3,500 J (Formula presented.). It formed several convective cores (up to 2,900 (Formula presented.) with cloud top temperature (Formula presented.) − (Formula presented.) C) and exhibited a bow echo structure during the sprite production period. Using Lightning Mapping Array data, we show that the sprite producing positive cloud-to-ground (SP + CG) flashes mainly initiated at the edge of the convective line on the side of the stratiform region. The flashes propagated 100–200 km across it, producing both positive and negative CG strokes. The 19 dancing sprite events included 49 sequences, of which 46 were associated with distinct SP + CG strokes and 3 with surges during the continuing current. An especially bright and wide sprite sequence was produced by three distinct SP + CG strokes that occurred within 3 ms and spread over 54 km. This sprite sequence could be classified as a new sprite category resembling a "wall" but structured in three groups, each associated with one of the +CG strokes. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	dancing sprites; lightning; Lightning Mapping Array; sprites; transient luminous events
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/236939
作者单位	DTU Space, Technical University of Denmark, Lyngby, Denmark; Laboratoire d’Aérologie, Université de Toulouse, UT3, CNRS, IRD, Toulouse, France; Department of Electronics, AGH University of Science and Technology, Krakow, Poland; CEA, DAM, DIF, Arpajon, France
推荐引用方式 GB/T 7714	Tomicic M.,Soula S.,Defer E.,等. Dancing Sprites Above a Lightning Mapping Array—An Analysis of the Storm and Flash/Sprite Developments[J],2021,126(20).
APA	Tomicic M..,Soula S..,Defer E..,Prieur S..,Mlynarczyk J..,...&Neubert T..(2021).Dancing Sprites Above a Lightning Mapping Array—An Analysis of the Storm and Flash/Sprite Developments.Journal of Geophysical Research: Atmospheres,126(20).
MLA	Tomicic M.,et al."Dancing Sprites Above a Lightning Mapping Array—An Analysis of the Storm and Flash/Sprite Developments".Journal of Geophysical Research: Atmospheres 126.20(2021).