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DOI | 10.1002/joc.5726 |
Upscaling impact of wind/sea surface temperature mesoscale interactions on southern Africa austral summer climate | |
Desbiolles, Fabien1; Blamey, Ross1; Illig, Serena1,2; James, Rachel1,3; Barimalala, Rondrotiana1; Renault, Lionel2,4; Reason, Chris1 | |
2018-10-01 | |
发表期刊 | INTERNATIONAL JOURNAL OF CLIMATOLOGY
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ISSN | 0899-8418 |
EISSN | 1097-0088 |
出版年 | 2018 |
卷号 | 38期号:12页码:4651-4660 |
文章类型 | Article |
语种 | 英语 |
国家 | South Africa; France; England; USA |
英文摘要 | Mesoscale sea surface temperature (SST) variability plays an important role in shaping local atmospheric boundary layers through thermodynamic processes. This study focuses on the upscaling effects of mesoscale SST gradients in sensitive areas on the southern Africa regional atmospheric circulation. Using regional atmospheric model sensitivity experiments which differ only in the mesoscale SST forcing characteristics (either the full spectrum of SST variability or only its large-scale components are included), we first quantify the importance of SST gradients on regional atmospheric conditions. Agulhas eddies and meanders influence the vertical air column up to the troposphere, and mesoscale ocean patterns significantly modify incoming landwards moisture fluxes. The austral summer mean state is then modified in terms of air temperature, cloud cover and mean rainfall, with notable differences in tropical rainbands over southwestern Africa. Mesoscale SST variability favours tropical-extra-tropical interactions and cloudband development over the continent. These results stress the importance of high-resolution ocean forcing for accurate atmospheric simulations. |
英文关键词 | atmospheric circulation mesoscale SST forcing rainfall variability southern Africa summer climate upscaling effects of mesoscale air-sea interactions |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000446279100022 |
WOS关键词 | INDIAN-OCEAN ; STRESS CURL ; DRY SUMMERS ; RAINFALL ; SYSTEM ; VARIABILITY ; CIRCULATION ; DIVERGENCE ; ANOMALIES ; BOTSWANA |
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/37415 |
专题 | 气候变化 |
作者单位 | 1.Univ Cape Town, Dept Oceanog, Cape Town, South Africa; 2.UPS, CNES, IRD, LEGOS,ICEMASA,CNRS, Toulouse, France; 3.Univ Oxford, Sch Geog & Environm, Oxford, England; 4.Univ Calif Los Angeles, Dept Atmospher & Ocean Sci, Los Angeles, CA USA |
推荐引用方式 GB/T 7714 | Desbiolles, Fabien,Blamey, Ross,Illig, Serena,et al. Upscaling impact of wind/sea surface temperature mesoscale interactions on southern Africa austral summer climate[J]. INTERNATIONAL JOURNAL OF CLIMATOLOGY,2018,38(12):4651-4660. |
APA | Desbiolles, Fabien.,Blamey, Ross.,Illig, Serena.,James, Rachel.,Barimalala, Rondrotiana.,...&Reason, Chris.(2018).Upscaling impact of wind/sea surface temperature mesoscale interactions on southern Africa austral summer climate.INTERNATIONAL JOURNAL OF CLIMATOLOGY,38(12),4651-4660. |
MLA | Desbiolles, Fabien,et al."Upscaling impact of wind/sea surface temperature mesoscale interactions on southern Africa austral summer climate".INTERNATIONAL JOURNAL OF CLIMATOLOGY 38.12(2018):4651-4660. |
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