干旱区生态环境知识资源中心(Arid): Lightning Characteristics Over Humid Regions and Arid Regions and Their Association With Aerosols Over Northern India

Arid

DOI	10.1007/s00024-022-02981-6
	Lightning Characteristics Over Humid Regions and Arid Regions and Their Association With Aerosols Over Northern India
	Jnanesh, S. P.; Lal, D. M.; Gopalakrishnan, V; Ghude, Sachin D.; Pawar, Sunil D.; Tiwari, S.; Srivastava, Manoj K.
通讯作者	Lal, DM (corresponding author)，Indian Inst Trop Meteorol, Pune, Maharashtra, India.
来源期刊	PURE AND APPLIED GEOPHYSICS
ISSN	0033-4553
EISSN	1420-9136
出版年	2022-02
英文摘要	The association between aerosol and lightning has been investigated with long-term decadal data (2005-2014) for lightning, aerosol optical depth (AOD), relative humidity, and effective cloud droplet size. To understand the complex relationship between aerosol and lightning, two different regions with different climatic and weather conditions, a humid region R1 (22 degrees-29 degrees N, 89 degrees-92 degrees E) and an arid region R2 (23 degrees-28 degrees N, 70 degrees-76 degrees E) of northern India, were chosen for the study domain. The results show that lightning activity was observed to occur more over the humid region R1, i.e., 1141 days (1/3 of total days), than over the arid region R2, i.e., 740 days (1/5 of total days). Also, over the humid region R1, the highest lightning flash density was recorded as nearly 4.6 x 10(-4) flashes/km(2)/day observed for 18 days (1.5%); on the contrary, over the arid region R2, the maximum lightning flash density was observed to be 2.5 x 10(-4) flashes/km(2)/day and occurred for about 22 days (2.9%). The analysis shows that a nonlinear relationship exists between aerosol and lightning with a highly associated influence of relative humidity. A very significant positive and negative co-relation that varies with relative humidity has been observed between AOD and lightning for both humid and arid regions. This shows relative humidity is the key factor in determining the increase or decrease of lightning activity. This study also shows that the larger the cloud droplet size, the higher the relative humidity and vice versa. This study emphasizes that aerosol concentration in the atmosphere influences cloud microphysics by modulating the size of cloud droplets and thereby regulating the lightning frequency. The atmospheric humidity is the driving factor in deciding the positive or negative co-relationship between aerosol and lightning.
英文关键词	Aerosol optical depth lightning flash density effective cloud droplet size relative humidity nonlinear relation positive and negative correlation humid region arid region northern India
类型	Article ; Early Access
语种	英语
开放获取类型	Green Published, Bronze
收录类别	SCI-E
WOS记录号	WOS:000762344100003
WOS关键词	LAND-OCEAN CONTRAST ; TROPOSPHERIC OZONE ; CONVECTIVE RAIN ; GANGETIC PLAIN ; THUNDERSTORM ; POLLUTION ; SMOKE ; CLOUDS ; CLIMATE ; IMPACT
WOS类目	Geochemistry & Geophysics
WOS研究方向	Geochemistry & Geophysics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377212
作者单位	[Jnanesh, S. P.; Lal, D. M.; Gopalakrishnan, V; Ghude, Sachin D.; Pawar, Sunil D.; Tiwari, S.] Indian Inst Trop Meteorol, Pune, Maharashtra, India; [Jnanesh, S. P.; Srivastava, Manoj K.] Banaras Hindu Univ, Dept Geophys, Varanasi, Uttar Pradesh, India
推荐引用方式 GB/T 7714	Jnanesh, S. P.,Lal, D. M.,Gopalakrishnan, V,et al. Lightning Characteristics Over Humid Regions and Arid Regions and Their Association With Aerosols Over Northern India[J],2022.
APA	Jnanesh, S. P..,Lal, D. M..,Gopalakrishnan, V.,Ghude, Sachin D..,Pawar, Sunil D..,...&Srivastava, Manoj K..(2022).Lightning Characteristics Over Humid Regions and Arid Regions and Their Association With Aerosols Over Northern India.PURE AND APPLIED GEOPHYSICS.
MLA	Jnanesh, S. P.,et al."Lightning Characteristics Over Humid Regions and Arid Regions and Their Association With Aerosols Over Northern India".PURE AND APPLIED GEOPHYSICS (2022).