气候变化领域集成服务门户(CCPortal): Weakening of the Senegalo–Mauritanian upwelling system under climate change

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DOI	10.1007/s00382-019-04797-y
	Weakening of the Senegalo–Mauritanian upwelling system under climate change
	Sylla A.; Mignot J.; Capet X.; Gaye A.T.
发表日期	2019
ISSN	0930-7575
起始页码	4447
结束页码	4473
卷号	53 期号:2020-07-08
英文摘要	Upwelling processes bring nutrient-rich waters from the deep ocean to the surface. Areas of upwelling are often associated with high productivity, offering great economic value in terms of fisheries. The sensitivity of spring/summer-time coastal upwelling systems to climate change has recently received a lot of attention. Several studies have suggested that their intensity may increase in the future while other authors have shown decreasing intensity in their equatorward portions. Yet, recent observations do not show robust evidence of this intensification. The Senegalo-Mauritanian upwelling system (SMUS) located at the southern edge of the north Atlantic system (12°N–20°N) and most active in winter/spring has been largely excluded from these studies. Here, the seasonal cycle of the SMUS and its response to climate change is investigated in the database of the Coupled Models Inter comparison Project Phase 5 (CMIP5). Upwelling magnitude and surface signature are characterized by several sea surface temperature and wind stress indices. We highlight the ability of the climate models to reproduce the system, as well as their biases. The simulations suggest that the intensity of the SMUS winter/spring upwelling will moderately decrease in the future, primarily because of a reduction of the wind forcing linked to a northward shift of Azores anticyclone and a more regional modulation of the low pressures found over Northwest Africa. The implications of such an upwelling reduction on the ecosystems and local communities exploiting them remains very uncertain. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Climate change; Climate models; Northeastern tropical Atlantic; Upwelling
语种	英语
scopus关键词	climate change; climate modeling; CMIP; numerical model; regional climate; sea surface temperature; sensitivity analysis; upwelling; wind velocity; Mauritania; Senegal
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/145966
作者单位	Laboratoire de Physique de l’Atmosphére et de l’Ocean Simeon Fongang (LPAO-SF/ESP/UCAD), Dakar, Senegal; Sorbonne Universités (CNRS/IRD/MNHN), LOCEAN Laboratory, Paris, France
推荐引用方式 GB/T 7714	Sylla A.,Mignot J.,Capet X.,等. Weakening of the Senegalo–Mauritanian upwelling system under climate change[J],2019,53(2020-07-08).
APA	Sylla A.,Mignot J.,Capet X.,&Gaye A.T..(2019).Weakening of the Senegalo–Mauritanian upwelling system under climate change.Climate Dynamics,53(2020-07-08).
MLA	Sylla A.,et al."Weakening of the Senegalo–Mauritanian upwelling system under climate change".Climate Dynamics 53.2020-07-08(2019).