| DOI: | 10.1007/s00382-017-3709-7
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| Scopus记录号: | 2-s2.0-85018781150
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| 论文题名: | On the shortening of Indian summer monsoon season in a warming scenario |
| 作者: | Sabeerali C.T.; Ajayamohan R.S.
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| 刊名: | Climate Dynamics
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| ISSN: | 9307575
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| 出版年: | 2018
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| 卷: | 50, 期:2018-05-06 | | 起始页码: | 1609
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| 结束页码: | 1624
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| 语种: | 英语
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| 英文关键词: | CMIP5
; Global warming
; Indian summer monsoon
; Length of rainy season
; Onset and withdrawal dates
; RCP8.5
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| Scopus关键词: | air temperature
; CMIP
; global warming
; monsoon
; summer
; troposphere
; wind shear
; Indian Ocean
; Indian Ocean (Tropical)
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| 英文摘要: | Assessing the future projections of the length of rainy season (LRS) has paramount societal impact considering its potential to alter the seasonal mean rainfall over the Indian subcontinent. Here, we explored the projections of LRS using both historical and Representative Concentration Pathways 8.5 (RCP8.5) simulations of the Coupled Model Intercomparison Project Phase5 (CMIP5). RCP8.5 simulations project shortening of the LRS of Indian summer monsoon by altering the timing of onset and withdrawal dates. Most CMIP5 RCP8.5 model simulations indicate a faster warming rate over the western tropical Indian Ocean compared to other regions of the Indian Ocean. It is found that the pronounced western Indian Ocean warming and associated increase in convection results in warmer upper troposphere over the Indian Ocean compared to the Indian subcontinent, reducing the meridional gradient in upper tropospheric temperature (UTT) over the Asian summer monsoon (ASM) domain. The weakening of the meridional gradient in UTT induces weakening of easterly vertical wind shear over the ASM domain during first and last phase of monsoon, facilitate delayed (advanced) monsoon onset (withdrawal) dates, ensues the shortening of LRS of the Indian summer monsoon in a warming scenario. © 2017, Springer-Verlag Berlin Heidelberg. |
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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/109408
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| Appears in Collections: | 影响、适应和脆弱性
气候变化事实与影响
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作者单位: | Center for Prototype Climate Modeling, New York University Abu Dhabi, Saadiyat Island, P.O. Box 129188, Abu Dhabi, United Arab Emirates
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| Recommended Citation: | |
Sabeerali C.T.,Ajayamohan R.S.. On the shortening of Indian summer monsoon season in a warming scenario[J]. Climate Dynamics,2018-01-01,50(2018-05-06)
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