气候变化领域集成服务门户(CCPortal): On the impact of atmospheric vs oceanic resolutions on the representation of the sea surface temperature in the South Eastern Tropical Atlantic

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DOI	10.1007/s00382-020-05256-9
	On the impact of atmospheric vs oceanic resolutions on the representation of the sea surface temperature in the South Eastern Tropical Atlantic
	de la Vara A.; Cabos W.; Sein D.V.; Sidorenko D.; Koldunov N.V.; Koseki S.; Soares P.M.M.; Danilov S.
发表日期	2020
ISSN	0930-7575
起始页码	4733
结束页码	4757
卷号	54
英文摘要	Despite the efforts of the modelling community to improve the representation of the sea surface temperature (SST) over the South Eastern Tropical Atlantic, warm biases still persist. In this work we use four different configurations of the fully-coupled AWI Climate Model (AWI-CM) which allow us to gain physics-based insight into the role of the oceanic and atmospheric resolutions of the model in the regional distribution of the SST. Our results show that a sole refinement of the oceanic resolution reduces warm biases further than a single increase of the atmospheric component. An increased oceanic resolution is required (i) to simulate properly the Agulhas Current and its associated rings; (ii) to reinforce the northward-flowing Benguela Current and (iii) to intensify coastal upwelling. The best results are obtained when both resolutions are refined. However, even in that case, warm biases persist, reflecting that some processes and feedbacks are still not optimally resolved. Our results indicate that overheating is not due to insufficient upwelling, but rather due to upwelling of waters which are warmer than observations as a result of an erroneous representation of the vertical distribution of temperature. Errors in the representation of the vertical temperature profile are the consequence of a warm bias in the simulated climate state. © 2020, The Author(s).
英文关键词	Atmospheric resolution; Coupled climate model; Oceanic resolution; Sea surface temperature biases; Tropical Atlantic
语种	英语
scopus关键词	climate modeling; sea surface temperature; temperature profile; upwelling; Atlantic Ocean; Atlantic Ocean (Tropical)
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/145452
作者单位	Environmental Sciences Institute, University of Castilla-La Mancha, Toledo, Spain; Departamento de Matemática Aplicada a la Ingeniería Industrial, E.T.S.I. Industriales, Universidad Politécnica de Madrid, Madrid, Spain; Department of Physics, University of Alcalá, Alcalá de Henares, Madrid, Spain; Alfred Wegener Institute for Polar and Marine Research, Bremerhaven, Germany; MARUM, Center for Marine Environmental Sciences, Bremen, Germany; Geophysical Institute, University of Bergen and Bjerknes Centre for Climate Research, Bergen, Norway; Instituto Dom Luiz (IDL), Faculdade de Ciências, Universidade de Lisboa, Lisbon, Portugal; Jacobs University, Bremen, Germany; Shirshov Institute of Oceanology, Russian Academy of Science, Moscow, Russian Federation
推荐引用方式 GB/T 7714	de la Vara A.,Cabos W.,Sein D.V.,et al. On the impact of atmospheric vs oceanic resolutions on the representation of the sea surface temperature in the South Eastern Tropical Atlantic[J],2020,54.
APA	de la Vara A..,Cabos W..,Sein D.V..,Sidorenko D..,Koldunov N.V..,...&Danilov S..(2020).On the impact of atmospheric vs oceanic resolutions on the representation of the sea surface temperature in the South Eastern Tropical Atlantic.Climate Dynamics,54.
MLA	de la Vara A.,et al."On the impact of atmospheric vs oceanic resolutions on the representation of the sea surface temperature in the South Eastern Tropical Atlantic".Climate Dynamics 54(2020).