DOI: 10.1016/j.atmosres.2017.12.009
Scopus记录号: 2-s2.0-85040538002
论文题名: Cloud-to-ground lightning activity in Colombia: A 14-year study using lightning location system data
作者: Herrera J. ; Younes C. ; Porras L.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 203 起始页码: 164
结束页码: 174
语种: 英语
英文关键词: Cloud-to-ground lightning flash density
; Colombia
; Lightning
; Lightning location system
; Lightning parameters
Scopus关键词: Efficiency
; Lightning
; Lightning protection
; Location
; Cloud-to-ground lightning
; Cloud-to-ground lightning flash densities
; Colombia
; Global lightning activity
; Lightning location system(LLS)
; Lightning location systems
; Lightning parameters
; Lightning protection systems
; Clouds
; algorithm
; atmospheric electricity
; cloud to ground lightning
; comparative study
; Colombia
; Equatoria
; South Sudan
英文摘要: This paper presents the analysis of 14 years of cloud-to-ground lightning activity observation in Colombia using lightning location systems (LLS) data. The first Colombian LLS operated from 1997 to 2001. After a few years, this system was upgraded and a new LLS has been operating since 2007. Data obtained from these two systems was analyzed in order to obtain lightning parameters used in designing lightning protection systems. The flash detection efficiency was estimated using average peak current maps and some theoretical results previously published. Lightning flash multiplicity was evaluated using a stroke grouping algorithm resulting in average values of about 1.0 and 1.6 for positive and negative flashes respectively and for both LLS. The time variation of this parameter changes slightly for the years considered in this study. The first stroke peak current for negative and positive flashes shows median values close to 29 kA and 17 kA respectively for both networks showing a great dependence on the flash detection efficiency. The average percentage of negative and positive flashes shows a 74.04% and 25.95% of occurrence respectively. The daily variation shows a peak between 23 and 02 h. The monthly variation of this parameter exhibits a bimodal behavior typical of the regions located near The Equator. The lightning flash density was obtained dividing the study area in 3 × 3 km cells and resulting in maximum average values of 25 and 35 flashes km- 2 year- 1 for each network respectively. A comparison of these results with global lightning activity hotspots was performed showing good correlation. Besides, the lightning flash density variation with altitude shows an inverse relation between these two variables. © 2017 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108961
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: Universidad Nacional de Colombia., Sede Medellín, Departamento de Energía Eléctrica y Automática, Carrera 80 # 65-223, Medellín, 050041, Colombia; Universidad Nacional de Colombia., Sede Manizales, Departamento de Ingeniería Eléctrica, Electrónica y Computación, km 7 vía al Magdalena, Manizales, 170003, Colombia; INTERCOLOMBIA S.A., Calle 12 sur # 18-168Bloque 1Pisos 2 y 3, Medellín, 050022, Colombia
Recommended Citation:
Herrera J.,Younes C.,Porras L.. Cloud-to-ground lightning activity in Colombia: A 14-year study using lightning location system data[J]. Atmospheric Research,2018-01-01,203