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DOI | 10.1029/2021GL095511 |
The Spontaneous Nature of Lightning Initiation Revealed | |
C. Sterpka; J. Dwyer; N. Liu; B.M. Hare; O. Scholten; S. Buitink; S. ter Veen; A. Nelles | |
2021-11-19 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Here, we present new radio interferometer beamforming observations of lightning initiation using data from the Low Frequency Array (LOFAR). We show that the first lightning source in the flash increases exponentially in intensity by two orders of magnitude in 15 microseconds, while propagating 88 meters away from the initiation location at a constant speed of 4.8 ± 0.1 × 106 m/s. A second source replaces the first source at the initiation location, and subsequent propagation of the lightning leader follows. We interpret the first source to be a rapidly propagating and intensifying positive streamer discharge that subsequently produces a hot leader channel near the initiation point. How lightning initiates is one of the greatest unsolved problems in the atmospheric sciences, and these results shed light on this longstanding mystery. |
领域 | 气候变化 |
URL | 查看原文 |
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/342053 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | C. Sterpka,J. Dwyer,N. Liu,et al. The Spontaneous Nature of Lightning Initiation Revealed[J]. Geophysical Research Letters,2021. |
APA | C. Sterpka.,J. Dwyer.,N. Liu.,B.M. Hare.,O. Scholten.,...&A. Nelles.(2021).The Spontaneous Nature of Lightning Initiation Revealed.Geophysical Research Letters. |
MLA | C. Sterpka,et al."The Spontaneous Nature of Lightning Initiation Revealed".Geophysical Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
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