| DOI: | 10.1175/JCLI-D-18-0386.1
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| Scopus记录号: | 2-s2.0-85060555919
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| 论文题名: | Dynamics of Asian summer monsoon response to anthropogenic aerosol forcing |
| 作者: | Wang H.; Xie S.-P.; Kosaka Y.; Liu Q.; Du Y.
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| 刊名: | Journal of Climate
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| ISSN: | 8948755
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| 出版年: | 2019
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| 卷: | 32, 期:3 | | 起始页码: | 843
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| 结束页码: | 858
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| 语种: | 英语
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| 英文关键词: | Aerosols
; Anthropogenic effects
; Atmosphere-ocean interaction
; Atmospheric circulation
; Monsoons
; Sea surface temperature
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| Scopus关键词: | Aerosols
; Atmospheric radiation
; Atmospheric temperature
; Atmospheric thermodynamics
; Radiative Cooling
; Submarine geophysics
; Surface properties
; Surface waters
; Anthropogenic effects
; Atmosphere-ocean interactions
; Atmospheric circulation
; Monsoons
; Sea surface temperature (SST)
; Oceanography
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| 英文摘要: | Anthropogenic aerosols partially mask the greenhouse warming and cause the reduction in Asian summer monsoon precipitation and circulation. By decomposing the atmospheric change into the direct atmospheric response to radiative forcing and sea surface temperature (SST)-mediated change, the physical mechanisms for anthropogenic-aerosol-induced changes in the East Asian summer monsoon (EASM) and South Asian summer monsoon (SASM) are diagnosed. Using coupled and atmospheric general circulation models, this study shows that the aerosol-induced troposphere cooling over Asian land regions generates anomalous sinking motion between 208 and 408N and weakens the EASM north of 208N without SST change. The decreased EASMprecipitation and the attendant wind changes are largely due to this direct atmospheric response to radiative forcing, although the aerosol-induced North Pacific SST cooling also contributes. The SST-mediated change dominates the aerosol-induced SASM response, with contributions from both the north-south interhemispheric SST gradient and the local SST cooling pattern over the tropical Indian Ocean. Specifically, with large meridional gradient, the zonal-mean SST cooling pattern is most important for the Asian summer monsoon response to anthropogenic aerosol forcing, resulting in a reorganization of the regional meridional atmospheric overturning circulation. While uncertainty in aerosol radiative forcing has been emphasized in the literature, our results show that the intermodel spread is as large in the SST effect on summer monsoon rainfall, calling for more research into the ocean-atmosphere coupling. © 2019 American Meteorological Society. |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/117223
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| Appears in Collections: | 气候变化与战略
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| Recommended Citation: | |
Wang H.,Xie S.-P.,Kosaka Y.,et al. Dynamics of Asian summer monsoon response to anthropogenic aerosol forcing[J]. Journal of Climate,2019-01-01,32(3)
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