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DOI	10.3390/rs13214309
	Assessment of Recent Changes in Dust over South Asia Using RegCM4 Regional Climate Model
	Asutosh, Acharya; Pandey, S. K.; Vinoj, V.; Ramisetty, Ramakrishna; Mittal, Nishant
通讯作者	Asutosh, A (corresponding author), Indian Inst Technol Bhubaneswar, Bhubaneswar 752050, Odisha, India.
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2021
卷号	13 期号:21
英文摘要	Pre-monsoon dust aerosols over Indian regions are closely linked to the monsoon dynamics and Indian summer monsoon rainfall. Past observational studies have shown a decline in dust loading over the Indian landmass potentially caused by changing rainfall patterns over the desert regions. Such changes are expected to have a far-reaching impact on regional energy balance and monsoon rainfall. Using a regional climate-chemistry model, RegCM4.5, with an updated land module, we have simulated the long-term (2001-2015) changes in dust over the arid and semi-arid dust source regions of the North-Western part of the subcontinent. It is found that the area-averaged dust aerosol optical depth (AOD) over the arid and semi-arid desert regions has declined by 17% since the start of this millennium. The rainfall over these regions exhibits a positive trend of 0.1 mm day(-1)year(-1) and a net increase of > 50%. The wet deposition is found to be dominant and ~five-fold larger in magnitude over dry deposition and exhibits total changes of ~79 and 48% in the trends in atmospheric dust. As a response, a significant difference in the surface (11%), top of the atmosphere radiative forcing (7%), and widespread atmospheric cooling are observed in the short wave domain of radiation spectrum over the Northern part of the Indian landmass. Such quantification and long-term change studies are necessary for understanding regional climate change and the water cycle.
英文关键词	dust aerosols radiative forcing regional climate rainfall RegCM
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000718995700001
WOS关键词	INDIAN-SUMMER MONSOON ; ABSORBING AEROSOLS ; DESERT DUST ; EAST-ASIA ; RAINFALL ; CLOUD ; SIMULATION ; IMPACT ; RESOLUTION ; ALBEDO
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/368185
作者单位	[Asutosh, Acharya; Pandey, S. K.; Vinoj, V.] Indian Inst Technol Bhubaneswar, Bhubaneswar 752050, Odisha, India; [Ramisetty, Ramakrishna; Mittal, Nishant] TSI Instruments India Private Ltd, Bangalore 560102, Karnataka, India
推荐引用方式 GB/T 7714	Asutosh, Acharya,Pandey, S. K.,Vinoj, V.,et al. Assessment of Recent Changes in Dust over South Asia Using RegCM4 Regional Climate Model[J],2021,13(21).
APA	Asutosh, Acharya,Pandey, S. K.,Vinoj, V.,Ramisetty, Ramakrishna,&Mittal, Nishant.(2021).Assessment of Recent Changes in Dust over South Asia Using RegCM4 Regional Climate Model.REMOTE SENSING,13(21).
MLA	Asutosh, Acharya,et al."Assessment of Recent Changes in Dust over South Asia Using RegCM4 Regional Climate Model".REMOTE SENSING 13.21(2021).