DOI: 10.1016/j.scib.2020.08.033
论文题名: Increasing trend of lightning activity in the South Asia region
作者: Qie K. ; Qie X. ; Tian W.
刊名: Science Bulletin
ISSN: 20959273
出版年: 2021
卷: 66, 期: 1 起始页码: 78
结束页码: 84
语种: 英语
中文关键词: Lightning activity
; Multiple linear regression analysis
; South Asian monsoon region
; Thermodynamic and microphysical factors
; Trend
英文关键词: Atmospheric chemistry
; Climate change
; Forestry
; Heat flux
; Linear regression
; Oceanography
; Potential energy
; Shear flow
; Surface waters
; Convective available potential energies
; Global climate changes
; Indian subcontinents
; Multiple linear regression analysis
; Sea surface temperature (SST)
; Surface latent heat fluxes
; Thermodynamic effect
; Water reallocation
; Lightning
英文摘要: Lightning is an important natural source of wildfires and oxynitride, and hence significantly influences ecological systems and atmospheric chemistry. Here, we choose South Asia, an important region for global water reallocation and global climate changes, to examine lightning variations based on the longest existing lightning dataset from the OTD/LIS observations. We identify a clear increase in lightning density in the research region, increasing at a rate of 0.096 fl km−2 a−1 over the last two decades. Multiple linear regression analysis is adopted to identify the main influencing factors among ten potential thermodynamic or microphysical factors and the crucial areas contributing to the increases in lightning. The surface latent heat flux along the west coast of the Indian subcontinent is the largest contributor, explaining 52% of the lightning variance and contributing to a 0.025 fl km−2 a−1 increase. The sea surface temperature in the Arabian Sea, the convective available potential energy (CAPE) over the northwestern Indian subcontinent, and the wind shear along the northwestern coast also make important contributions to the lightning increase, indicating that the thermodynamic effects overwhelm the microphysical effects on lightning activity over the South Asia region. © 2020 Science China Press Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170372
Appears in Collections: 气候变化与战略
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作者单位: College of Atmospheric Sciences, Lanzhou University, Lanzhou, 730000, China; Key Laboratory of Middle Atmosphere and Global Environment Observation, Institute of Atmospheric Science, Chinese Academy of Sciences, Beijing, 100029, China; College of Earth and Planetary Science, University of Chinese Academy of Sciences, Beijing, 100049, China
Recommended Citation:
Qie K.,Qie X.,Tian W.. Increasing trend of lightning activity in the South Asia region[J]. Science Bulletin,2021-01-01,66(1)