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DOI | 10.1002/2016JD025532 |
Global distribution and properties of continuing current in lightning | |
Bitzer, Phillip M. | |
2017-01-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Continuing current is a process in lightning in which the current in a conducting channel can flow for much longer than in a typical lightning discharge. The phenomenon can be characterized by the continuous optical emission that accompanies the current flow. Using the Lightning Imaging Sensor ( LIS), lightning with continuing current is identified on a global scale. Lightning that contains optical emission over at least five consecutive LIS frames, roughly 7-9 ms, are classified as continuing current flashes. This differs from typical lightning discharges that produce optical emission for one or two consecutive frames. Of the flashes detected by LIS, 11.2% contain continuing current. These flashes optically radiate over a larger footprint and have a longer duration than ones that do not. The spatial distribution of these flashes indicates that regions of high lightning activity may not be correlated with a high likelihood of continuing current flashes. Further, oceanic and winter lightning are shown to have a higher proportion of continuing current flashes. Finally, 25-40% of flashes identified by LIS to have continuing current have only an intracloud pulse detected by the National Lightning Detection Network (NLDN), with no cloud-to-ground strokes detected. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000396116900028 |
WOS关键词 | OPTICAL TRANSIENT DETECTOR ; IMAGING SENSOR ; DISCHARGES ; PERFORMANCE ; FLASHES ; SPACE |
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/32731 |
专题 | 气候变化 |
作者单位 | Univ Alabama Huntsville, Dept Atmospher Sci, Huntsville, AL USA |
推荐引用方式 GB/T 7714 | Bitzer, Phillip M.. Global distribution and properties of continuing current in lightning[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(2). |
APA | Bitzer, Phillip M..(2017).Global distribution and properties of continuing current in lightning.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(2). |
MLA | Bitzer, Phillip M.."Global distribution and properties of continuing current in lightning".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.2(2017). |
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