globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo2107
论文题名:
Short-term modulation of Indian summer monsoon rainfall by West Asian dust
作者: Vinoj V.; Rasch P.J.; Wang H.; Yoon J.-H.; Ma P.-L.; Landu K.; Singh B.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2014
卷: 7, 期:4
起始页码: 308
结束页码: 313
语种: 英语
Scopus关键词: aerosol composition ; atmospheric circulation ; atmospheric pollution ; climate modeling ; dust ; global climate ; heating ; precipitation intensity ; satellite data ; timescale ; Arabian Peninsula ; Arabian Sea ; Indian Ocean ; North Africa ; West Asia
英文摘要: The Indian summer monsoon is influenced by numerous factors, including aerosol-induced changes to clouds, surface and atmospheric heating, and atmospheric circulation. Most previous studies assessing the effect of aerosols on monsoon rainfall have focussed on the local impact of aerosols on precipitation on monthly to seasonal timescales. Here, we show that desert dust aerosol levels over the Arabian Sea, West Asia and the Arabian Peninsula are positively correlated with the intensity of the Indian summer monsoon, using satellite data and models; a lead-lag analysis indicates that dust and precipitation vary in concert over timescales of about a week. Our analysis of global climate model simulations indicates that by heating the atmosphere, dust aerosols induce large-scale convergence over North Africa and the Arabian Peninsula, increasing the flow of moisture over India within a week. According to these simulations, dust-induced heating of the atmosphere over North Africa and West Asia rapidly modulates monsoon rainfall over central India. © 2014 Macmillan Publishers Limited. All rights reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/106537
Appears in Collections:气候减缓与适应
科学计划与规划

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作者单位: Atmospheric Sciences and Global Change Division, Pacific Northwest National Laboratory, Richland, WA 99352, United States; School of Earth Ocean and Climate Sciences, Indian Institute of Technology Bhubaneswar, Bhubaneswar, Odisha 751007, India

Recommended Citation:
Vinoj V.,Rasch P.J.,Wang H.,et al. Short-term modulation of Indian summer monsoon rainfall by West Asian dust[J]. Nature Geoscience,2014-01-01,7(4)
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