DOI: 10.1016/j.atmosres.2018.08.003
Scopus记录号: 2-s2.0-85051565068
论文题名: Three-dimensional optical observations of an upward lightning triggered by positive cloud-to-ground lightning
作者: Qi Q. ; Lyu W. ; Wu B. ; Ma Y. ; Chen L. ; Liu H.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 214 起始页码: 275
结束页码: 283
语种: 英语
Scopus关键词: Electric fields
; Lightning
; Radar
; Storms
; Charge structure
; Cloud-to-ground lightning
; Development directions
; Guangdong Province
; Lightning channel
; Lightning process
; Optical observations
; Stratiform clouds
; Clouds
; cloud to ground lightning
; electric field
; height
; observational method
; radar
; reconstruction
; China
; Guangdong
; Guangzhou
英文摘要: Based on dual-station optical records, electric field and radar data, a detailed analysis of an instance of upward lightning initiated from Canton Tower, in the city of Guangzhou, Guangdong Province, China, is presented. The upward lightning was triggered by a positive cloud-to-ground (PCG) flash nearby. The upward lightning channel and part of the horizontal PCG lightning channel obtained by dual-station optical systems were reconstructed in three dimensions, providing us with spatial channel information on how the PCG lightning process triggered the upward lightning from Canton Tower. The upward lightning occurred in the trailing stratiform cloud area behind a squall line system. The radar echo intensity in this area was relatively weak (30–40 dBZ), and the height of the strongest radar echo center was about 4 km. From the optical records, the two-dimensional length of the horizontal PCG lightning channel was longer than 17.2 km. The length of the three-dimensional reconstructed part of the PCG lightning channel was about 3660 m. Its height increased from 3410 m to 4170 m along the development direction, with an average height of 3640 m. Based on the above result, as well as previous studies on the charge structure of the stratiform region, we infer that the height of the positive charge layer was roughly consistent with the height of the strongest echo center. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108737
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, 100081, China; College of Earth Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China; Laboratory of Lightning Physics and Protection Engineering, Chinese Academy of Meteorological Sciences, Beijing, 100081, China; Institute of Tropical and Marine Meteorology, China Meteorological Administration, Guangzhou, 510080, China
Recommended Citation:
Qi Q.,Lyu W.,Wu B.,et al. Three-dimensional optical observations of an upward lightning triggered by positive cloud-to-ground lightning[J]. Atmospheric Research,2018-01-01,214