气候变化领域集成服务门户(CCPortal): Luminous Crown Residual Vs. Bright Space Segment: Characteristical Structures for the Intermittent Positive and Negative Leaders of Triggered Lightning

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DOI	10.1029/2020GL088107
	Luminous Crown Residual Vs. Bright Space Segment: Characteristical Structures for the Intermittent Positive and Negative Leaders of Triggered Lightning
	Jiang R.; Qie X.; Li Z.; Zhang H.; Li X.; Yuan S.; Liu M.; Sun Z.; Srivastava A.; Liu M.; Ma Z.; Lv G.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:21
英文摘要	We identify and investigate the intermittent propagation of upward positive and negative leaders in rocket-triggered lightning based on comprehensive observations of fine time-resolved optical, current, and electromagnetic fields. There is an abrupt luminous crown blooming due to the achievement of a positive leader step, after which the channel weakens and the head degrades. During the positive leader pausing, residual structure is recognized at area of previous luminous crown blooming, in the form of a floating segment. Our observation point to a possible mechanism that it connects with the positive leader head, causing a forward-step and a sharp current pulse. This is to some extent similar to negative leader stepping, in which the space leader emerges and connection between the space leader and the channel head occurs. The generation of clustered space leaders give rise to negative channel branching, but the residual structure in positive leader just leads to individual step. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Electromagnetic fields; Rockets; Floating segments; Observation point; Positive leaders; Possible mechanisms; Residual structure; Space segments; Time-resolved; Triggered lightning; Lightning; backscatter; electromagnetic field; energetics; lightning; luminescence; spacecraft; Hesperis
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169511
作者单位	Key Laboratory of Middle Atmosphere and Global Environment Observation (LAGEO), Institute of Atmospheric Physics, Chinese Academy of Science, Beijing, China; Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration/Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters (CIC-FEMD), Nanjing University of Information Science and Technology, Nanjing, China; College of Earth and Planetary Science, University of Chinese Academy of Science, Beijing, China; College of Electronic Engineering, Chengdu University of Information Technology, Chengdu, China
推荐引用方式 GB/T 7714	Jiang R.,Qie X.,Li Z.,et al. Luminous Crown Residual Vs. Bright Space Segment: Characteristical Structures for the Intermittent Positive and Negative Leaders of Triggered Lightning[J],2020,47(21).
APA	Jiang R..,Qie X..,Li Z..,Zhang H..,Li X..,...&Lv G..(2020).Luminous Crown Residual Vs. Bright Space Segment: Characteristical Structures for the Intermittent Positive and Negative Leaders of Triggered Lightning.Geophysical Research Letters,47(21).
MLA	Jiang R.,et al."Luminous Crown Residual Vs. Bright Space Segment: Characteristical Structures for the Intermittent Positive and Negative Leaders of Triggered Lightning".Geophysical Research Letters 47.21(2020).