气候变化领域集成服务门户(CCPortal): Diurnal differences in the effect of aerosols on cloud-to-ground lightningin the Sichuan Basin

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DOI	10.5194/acp-23-2843-2023
	Diurnal differences in the effect of aerosols on cloud-to-ground lightningin the Sichuan Basin
	Wang, Haichao; Tan, Yongbo; Shi, Zheng; Yang, Ning; Zheng, Tianxue
发表日期	2023
ISSN	1680-7316
EISSN	1680-7324
起始页码	2843
结束页码	2857
卷号	23 期号:4 页码:15
英文摘要	The effect of aerosols on lightning has been examined in many studies, but its mechanisms are complex and far from understood. This study investigated the influence of aerosols on cloud-to-ground (CG) lightning during both afternoon (12:00-18:00 Beijing Time) and night (23:00-05:00 Beijing Time) in the Sichuan Basin by analysing 9-year datasets of CG lightning, aerosol loading, dynamic-thermodynamic, and cloud-related data from ground-based measurements, satellite, and model reanalysis to understand the difference in the influences of aerosols under conditions with and without solar radiation. The relationship between lightning and aerosol optical depth (AOD) is nonlinear in the afternoon and at night with a turning point at AOD expressionpproximexpressiontely equexpressionl to 0.3. When AOD is less than 0.3, increasing AOD will lead to an increase in lightning flashes both in the afternoon and at night. When the AOD exceeds 0.3, the increase of AOD will reduce the lightning flashes in the afternoon but have no obvious effect on the lightning flashes at night. The different relationship between aerosol loading and lightning flashes in the afternoon and at night after AOD exceeds 0.3 is related to the changes in solar radiation in these two periods. In the afternoon, excessive aerosols reduce the solar radiation reaching the ground through its direct and indirect radiative effects, resulting in the decrease of the surface temperature, increasing atmospheric stability, inhibiting convection, and thus reducing lightning. At night, due to the absence of solar radiation, the influence of aerosols on surface temperature is weakened; thus, the inhibition of aerosols on lightning activity is weakened.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000942469800001
来源期刊	ATMOSPHERIC CHEMISTRY AND PHYSICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/273133
作者单位	Nanjing University of Information Science & Technology; China Meteorological Administration; Nanjing University of Information Science & Technology; Chinese Academy of Meteorological Sciences (CAMS); Chinese Academy of Sciences; Changzhou Institute of Technology
推荐引用方式 GB/T 7714	Wang, Haichao,Tan, Yongbo,Shi, Zheng,et al. Diurnal differences in the effect of aerosols on cloud-to-ground lightningin the Sichuan Basin[J],2023,23(4):15.
APA	Wang, Haichao,Tan, Yongbo,Shi, Zheng,Yang, Ning,&Zheng, Tianxue.(2023).Diurnal differences in the effect of aerosols on cloud-to-ground lightningin the Sichuan Basin.ATMOSPHERIC CHEMISTRY AND PHYSICS,23(4),15.
MLA	Wang, Haichao,et al."Diurnal differences in the effect of aerosols on cloud-to-ground lightningin the Sichuan Basin".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.4(2023):15.