Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD028407 |
Initiation of Streamers Due to Hydrometeor Collisions in Thunderclouds | |
Cai, Qiheng; Jansky, Jaroslav; Pasko, Victor P. | |
2018-07-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:14页码:7050-7064 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | In order to initiate streamers and leaders under thunderstorm conditions the electric field should reach values higher than the critical breakdown field E-k (i.e., similar to 30 kV.cm(-)(1).atm(-)(1)). However, the maximum electric field in thunderstorms measured by balloons is similar to 6-9 kV.cm(-1).atm(-1). In present work, to achieve the electric field amplification required for streamer initiation, a system of two approaching spherical hydrometeors is investigated. Streamer initiation is determined from a Meek number, describing electron multiplication in fields above E-k. We have found the relationships between radii of particles for successful streamer initiation in the gap between these two particles and also on the outside periphery of the two particle system when the particles are connected by a discharge channel. Furthermore, we estimated the frequency of streamer initiation using three realistic hydrometeor size model distributions available in the literature and found that the scenario of streamer initiation on the outside periphery is only possible for relatively high electric fields >= 0.5E(k) at altitudes of 3 and 6 km. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000441965400001 |
WOS关键词 | 2 CONDUCTING SPHERES ; POSITIVE STREAMER ; LIGHTNING INITIATION ; CORONA ; INCEPTION ; PROPAGATION ; DISCHARGE ; FLASHES ; PHYSICS ; CLOUD |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/32217 |
专题 | 气候变化 |
作者单位 | Penn State Univ, CSSL Lab, Dept Elect Engn, Sch Elect Engn & Comp Sci, University Pk, PA 16802 USA |
推荐引用方式 GB/T 7714 | Cai, Qiheng,Jansky, Jaroslav,Pasko, Victor P.. Initiation of Streamers Due to Hydrometeor Collisions in Thunderclouds[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(14):7050-7064. |
APA | Cai, Qiheng,Jansky, Jaroslav,&Pasko, Victor P..(2018).Initiation of Streamers Due to Hydrometeor Collisions in Thunderclouds.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(14),7050-7064. |
MLA | Cai, Qiheng,et al."Initiation of Streamers Due to Hydrometeor Collisions in Thunderclouds".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.14(2018):7050-7064. |
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