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DOI | 10.1007/s00382-019-04811-3 |
Reconciling roles of sulphate aerosol forcing and internal variability in Atlantic multidecadal climate changes | |
Watanabe, Masahiro1; Tatebe, Hiroaki2 | |
2019-10-01 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 53页码:4651-4665 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | The interdecadal basin-wide warming and cooling cycle of the North Atlantic Ocean, known as the Atlantic multidecadal variability (AMV), influences not only the Euro-Atlantic climatic conditions, but also tropical storms and monsoons remotely. However, controversy still remains on the relative importance of external forcing and internal processes for the past AMV. Here, we use three attribution experiments, consisting of five-member ensemble for each, for 1931-2014 by a climate model and show that the temporal variation of the observed AMV can be reproduced in the model forced by historical changes in radiative forcing. Specifically, anthropogenic sulphate emissions are found to explain 46-63% of the forced SST variations at decadal time scales. The spatial pattern of the sea surface temperature (SST) associated with the AMV is also well captured by the model, in which externally forced components dominate and significantly increase precipitation over Europe and the Sahel during positive AMV. An exception is the subpolar region where internally generated SST variability coupled with the North Atlantic Oscillation plays a major role. Under declining scenarios of anthropogenic aerosol emissions, a multi-model ensemble of climate simulations shows that the North Atlantic decadal SST variability will be generated increasingly by internal processes, suggesting a decreasing impact on regional precipitation. |
英文关键词 | Atlantic multidecadal variability Sulphate aerosols Climate model |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000489753900050 |
WOS关键词 | MERIDIONAL OVERTURNING CIRCULATION ; SEA-SURFACE TEMPERATURE ; THERMOHALINE CIRCULATION ; INTERDECADAL VARIATIONS ; OCEAN ; MODEL ; OSCILLATION ; SIMULATION ; RAINFALL ; PREDICTION |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
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/187239 |
专题 | 气候变化 |
作者单位 | 1.Univ Tokyo, Atmosphere & Ocean Res Inst, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778568, Japan; 2.Japan Agcy Marine Earth Sci & Technol, Kanazawa Ku, 3173-25 Showa Machi, Yokohama, Kanagawa 2360001, Japan |
推荐引用方式 GB/T 7714 | Watanabe, Masahiro,Tatebe, Hiroaki. Reconciling roles of sulphate aerosol forcing and internal variability in Atlantic multidecadal climate changes[J]. CLIMATE DYNAMICS,2019,53:4651-4665. |
APA | Watanabe, Masahiro,&Tatebe, Hiroaki.(2019).Reconciling roles of sulphate aerosol forcing and internal variability in Atlantic multidecadal climate changes.CLIMATE DYNAMICS,53,4651-4665. |
MLA | Watanabe, Masahiro,et al."Reconciling roles of sulphate aerosol forcing and internal variability in Atlantic multidecadal climate changes".CLIMATE DYNAMICS 53(2019):4651-4665. |
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