DOI: 10.1002/grl.50719
论文题名: Earlier onset of the Indian monsoon in the late twentieth century: The role of anthropogenic aerosols
作者: Bollasina M.A. ; Ming Y. ; Ramaswamy V.
刊名: Geophysical Research Letters
ISSN: 0094-8774
EISSN: 1944-8505
出版年: 2013
卷: 40, 期: 14 起始页码: 3715
结束页码: 3720
语种: 英语
英文关键词: anthropogenic aerosols
; historical GCM experiments
; Indian monsoon onset
; twentieth century trend
Scopus关键词: Anthropogenic aerosols
; Atmospheric circulation
; Atmospheric stability
; Indian monsoon
; Land-surface process
; Surface temperatures
; Thermodynamic changes
; Twentieth century
; Atmospheric temperature
; Atmospheric thermodynamics
; Aerosols
; aerosol
; anthropogenic source
; atmospheric circulation
; atmospheric pollution
; climate modeling
; experimental study
; global warming
; monsoon
; precipitation (climatology)
; twentieth century
; Bay of Bengal
; Indian Ocean
; Indochina
英文摘要: The impact of the late twentieth century increase of anthropogenic aerosols on the Indian monsoon onset was investigated with a state-of-the-art climate model with fully interactive aerosols and chemistry. We find that aerosols are likely responsible for the observed earlier onset, resulting in enhanced June precipitation over most of India. This shift is preceded by strong aerosol forcing over the Bay of Bengal and Indochina, mostly attributable to the direct effect, resulting in increased atmospheric stability that inhibits the monsoon migration in May. The adjusted atmospheric circulation leads to thermodynamic changes over the northwestern continental region, including increased surface temperature and near-surface moist static energy, which support a stronger June flow and, facilitated by a relative warming of the Indian Ocean, a vigorous northwestward precipitation shift. These findings underscore the importance of dynamical feedbacks and of regional land-surface processes for the aerosol-monsoon link. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84880641626&doi=10.1002%2fgrl.50719&partnerID=40&md5=e0dd70ff651d4a06ddd8fc73111d4aea
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6038
Appears in Collections: 气候减缓与适应
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作者单位: Program in Atmospheric and Oceanic Sciences, Princeton University, Princeton, NJ, United States
Recommended Citation:
Bollasina M.A.,Ming Y.,Ramaswamy V.. Earlier onset of the Indian monsoon in the late twentieth century: The role of anthropogenic aerosols[J]. Geophysical Research Letters,2013-01-01,40(14).