West African monsoon decadal variability and surface-related forcings: second West African Monsoon Modeling and Evaluation Project Experiment (WAMME II)
文献类型：期刊论文
| 作者 | Xue, Yongkang1; De Sales, Fernando2; Lau, William K. -M.3; Boone, Aaron4; Kim, Kyu-Myong5; Mechoso, Carlos R.1; Wang, Guiling6; Kucharski, Fred7; Schiro, Kathleen1; Hosaka, Masahiro8 |
| 刊名 | CLIMATE DYNAMICS
 |
| 出版日期 | 2016-12-01 |
| 卷号 | 47期号:11页码:3517-3545 |
| ISSN号 | 0930-7575 |
| 关键词 | Sahel seasonal and decadal climate variability Sahel drought SST and land forcings GCM |
| DOI | 10.1007/s00382-016-3224-2 |
| 通讯作者 | Xue, Yongkang(yxue@geog.ucla.edu) |
| 英文摘要 | The second West African Monsoon Modeling and Evaluation Project Experiment (WAMME II) is designed to improve understanding of the possible roles and feedbacks of sea surface temperature (SST), land use land cover change (LULCC), and aerosols forcings in the Sahel climate system at seasonal to decadal scales. The project's strategy is to apply prescribed observationally based anomaly forcing, i.e., "idealized but realistic" forcing, in simulations by climate models. The goal is to assess these forcings' effects in producing/amplifying seasonal and decadal climate variability in the Sahel between the 1950s and the 1980s, which is selected to characterize the great drought period of the last century. This is the first multi-model experiment specifically designed to simultaneously evaluate such relative contributions. The WAMME II models have consistently demonstrated that SST forcing is a major contributor to the twentieth century Sahel drought. Under the influence of the maximum possible SST forcing, the ensemble mean of WAMME II models can produce up to 60 % of the precipitation difference during the period. The present paper also addresses the role of SSTs in triggering and maintaining the Sahel drought. In this regard, the consensus of WAMME II models is that both Indian and Pacific Ocean SSTs greatly contributed to the drought, with the former producing an anomalous displacement of the Intertropical Convergence Zone before the WAM onset, and the latter mainly contributes to the summer WAM drought. The WAMME II models also show that the impact of LULCC forcing on the Sahel climate system is weaker than that of SST forcing, but still of first order magnitude. According to the results, under LULCC forcing the ensemble mean of WAMME II models can produces about 40 % of the precipitation difference between the 1980s and the 1950s. The role of land surface processes in responding to and amplifying the drought is also identified. The results suggest that catastrophic consequences are likely to occur in the regional Sahel climate when SST anomalies in individual ocean basins and in land conditions combine synergistically to favor drought. |
| 收录类别 | SCI |
| WOS关键词 | SAHEL RAINFALL VARIABILITY ; LAND-USE TRANSITIONS ; LONG-TERM LINK ; CLIMATE VARIABILITY ; SUMMER RAINFALL ; VEGETATION DYNAMICS ; AIR-TEMPERATURE ; SECONDARY LANDS ; REGIONAL MODEL ; GLOBAL-MODEL |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000389349000008 |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557505 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Xue, Yongkang |
| 作者单位 | 1.Univ Calif Los Angeles, Los Angeles, CA 90095 USA 2.San Diego State Univ, San Diego, CA 92182 USA 3.Univ Maryland, College Pk, MD 20742 USA 4.Meteo France, Ctr Natl Rech Meteorol, Toulouse, France 5.NASA Goddard Space Flight Ctr, Greenbelt, MD USA 6.Univ Connecticut, Storrs, CT USA 7.Abdus Salaam Int Ctr Theoret Phys, Trieste, Italy 8.Meteorol Res Inst, Tsukuba, Ibaraki, Japan 9.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou, Peoples R China 10.NASA Goddard Inst Space Studies, New York, NY USA |
| 推荐引用方式 GB/T 7714 | Xue, Yongkang,De Sales, Fernando,Lau, William K. -M.,et al. West African monsoon decadal variability and surface-related forcings: second West African Monsoon Modeling and Evaluation Project Experiment (WAMME II)[J]. CLIMATE DYNAMICS,2016,47(11):3517-3545. |
| APA | Xue, Yongkang.,De Sales, Fernando.,Lau, William K. -M..,Boone, Aaron.,Kim, Kyu-Myong.,...&Zhang, Zhengqiu.(2016).West African monsoon decadal variability and surface-related forcings: second West African Monsoon Modeling and Evaluation Project Experiment (WAMME II).CLIMATE DYNAMICS,47(11),3517-3545. |
| MLA | Xue, Yongkang,et al."West African monsoon decadal variability and surface-related forcings: second West African Monsoon Modeling and Evaluation Project Experiment (WAMME II)".CLIMATE DYNAMICS 47.11(2016):3517-3545. |
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来源：寒区旱区环境与工程研究所
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