Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL075098 |
Robust Projected Weakening of Winter Monsoon Winds Over the Arabian Sea Under Climate Change | |
Parvathi, V.1; Suresh, I.1; Lengaigne, M.2,3; Izumo, T.2,3; Vialard, J.2 | |
2017-10-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:19 |
文章类型 | Article |
语种 | 英语 |
国家 | India; France |
英文摘要 | The response of the Indian winter monsoon to climate change has received considerably less attention than that of the summer monsoon. We show here that all Coupled Model Intercomparison Project Phase 5 (CMIP5) models display a consistent reduction (of 6.5% for Representative Concentration Pathways 8.5 and 3.5% for 4.5, on an average) of the winter monsoon winds over the Arabian Sea at the end of 21st century. This projected reduction weakens but remains robust when corrected for overestimated winter Arabian Sea winds in CMIP5. This weakening is driven by a reduction in the interhemispheric sea level pressure gradient resulting from enhanced warming of the dry Arabian Peninsula relative to the southern Indian Ocean. The wind weakening reduces winter oceanic heat losses to the atmosphere and deepening of convective mixed layer in the northern Arabian Sea and hence can potentially inhibit the seasonal chlorophyll bloom that contributes substantially to the Arabian Sea annual productivity. Plain Language Summary The Indian summer monsoon response to climate change has been previously the focus of many studies. The Indian winter monsoon-projected response to climate change is, however, largely unexplored. This is the first study to report a robust weakening of the Indian winter monsoon winds over the Arabian Sea in two Coupled Model Intercomparison Project Phase 5 scenarios (an unmitigated and a mitigated one). The wind weakening leads to reduced winter oceanic convective overturning in the northern Arabian Sea. This winter convection is the key mechanism for a productivity (winter) bloom that strongly contributes to the Arabian Sea annual productivity. The projected winter monsoon weakening may thus reduce the Arabian Sea productivity. We also show a rainfall increase that could affect water supply in tropical Indian Ocean islands and Eastern Africa. |
英文关键词 | Indian winter monsoon Arabian Sea climate change CMIP5 RCP |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000413921300036 |
WOS关键词 | TROPICAL INDIAN-OCEAN ; ASIAN SUMMER MONSOON ; PRIMARY PRODUCTIVITY ; NORTHEAST MONSOON ; WARMING CONTRAST ; VARIABILITY ; MODELS ; LAND ; ZONE ; 21ST-CENTURY |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/28663 |
专题 | 气候变化 |
作者单位 | 1.Natl Inst Oceanog, CSIR, Panaji, Goa, India; 2.Univ Paris 06, UPMC, Sorbonne Univ, CNRS IRD MNHN,LOCEAN Lab,IPSL, Paris, France; 3.NIO, IISC NIO IITM IRD Joint Int Lab, Indofrench Cell Water Sci, Panaji, Goa, India |
推荐引用方式 GB/T 7714 | Parvathi, V.,Suresh, I.,Lengaigne, M.,et al. Robust Projected Weakening of Winter Monsoon Winds Over the Arabian Sea Under Climate Change[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(19). |
APA | Parvathi, V.,Suresh, I.,Lengaigne, M.,Izumo, T.,&Vialard, J..(2017).Robust Projected Weakening of Winter Monsoon Winds Over the Arabian Sea Under Climate Change.GEOPHYSICAL RESEARCH LETTERS,44(19). |
MLA | Parvathi, V.,et al."Robust Projected Weakening of Winter Monsoon Winds Over the Arabian Sea Under Climate Change".GEOPHYSICAL RESEARCH LETTERS 44.19(2017). |
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