气候变化领域集成服务门户(CCPortal): Trends in sea surface temperature and air–sea heat fluxes over the South Atlantic Ocean

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DOI	10.1007/s00382-019-04777-2
	Trends in sea surface temperature and air–sea heat fluxes over the South Atlantic Ocean
	Leyba I.M.; Solman S.A.; Saraceno M.
发表日期	2019
ISSN	0930-7575
起始页码	4141
结束页码	4153
卷号	53 期号:2020-07-08
英文摘要	The understanding of latent and sensible heat fluxes (LHF and SHF, respectively) is essential to improve our knowledge on how the atmosphere and oceans interact. In this work we identified trends of LHF and SHF in the South Atlantic (SA) Ocean from 1982 to 2015 and evaluated the potential drivers that contribute to those trends. Based on the Objectively Analyzed air–sea Fluxes (OAFlux) dataset, the European Centre for Medium Range Weather Forecasts (ERA-Interim) and the Optimum Interpolation sea surface temperature (SST) Analysis Version 2 we analyze trends and interannual variability of seasonal heat fluxes and variables influencing them. Heat fluxes trends in the SA have a strong regional and seasonal dependence. The highest increase of heat fluxes is found over the region delimited to the West and to the South by the Brazil Current Front (referred to as the Extended Brazil Current Region; ExtBCR).The humidity (temperature) differences and U10m in the ExtBCR only contributed to explain trends of LHF (SHF) in winter. Other mechanisms should be considered to explain the LHF and SHF trend observed in summer and in the rest of the SA. The close correspondence found between the trends in temperature and humidity differences and the trend in SST, indicates that the largest driver of trends in heat fluxes over the ExtBCR are the SST trends. We argue that the expansion and intensification of the South Atlantic Subtropical High causes an increase of wind speed which intensifies the western boundary current, leading to an increase of SST and therefore an intensification of heat fluxes. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Heat fluxes; Sea surface temperature; South Atlantic; Trends
语种	英语
scopus关键词	air-sea interaction; annual variation; latent heat flux; sea surface temperature; sensible heat flux; trend analysis; Atlantic Ocean; Atlantic Ocean (South); Brazil
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/145989
作者单位	Departamento de Ciencias de la Atmósfera y los Océanos, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Buenos Aires, Argentina; Centro de Investigaciones del Mar y la Atmósfera (CIMA), CONICET-Universidad de Buenos Aires, Ciudad Universitaria, Pabellón II, 2do Piso (C1428EGA), Buenos Aires, Argentina; Centre National de la Recherche Scientifique (CNRS), Unidad Mixta Internacional (UMI) Instituto Franco Argentino sobre Estudios de Clima y sus Impactos (IFAECI), Buenos Aires, Argentina
推荐引用方式 GB/T 7714	Leyba I.M.,Solman S.A.,Saraceno M.. Trends in sea surface temperature and air–sea heat fluxes over the South Atlantic Ocean[J],2019,53(2020-07-08).
APA	Leyba I.M.,Solman S.A.,&Saraceno M..(2019).Trends in sea surface temperature and air–sea heat fluxes over the South Atlantic Ocean.Climate Dynamics,53(2020-07-08).
MLA	Leyba I.M.,et al."Trends in sea surface temperature and air–sea heat fluxes over the South Atlantic Ocean".Climate Dynamics 53.2020-07-08(2019).