globalchange  > 气候减缓与适应
DOI: 10.1029/2018JC013887
Scopus记录号: 2-s2.0-85052445464
论文题名:
Fronts of the Malvinas Current System: Surface and Subsurface Expressions Revealed by Satellite Altimetry, Argo Floats, and Mercator Operational Model Outputs
作者: Artana C.; Lellouche J.-M.; Park Y.-H.; Garric G.; Koenig Z.; Sennéchael N.; Ferrari R.; Piola A.R.; Saraceno M.; Provost C.
刊名: Journal of Geophysical Research: Oceans
ISSN: 21699275
出版年: 2018
卷: 123, 期:8
起始页码: 5261
结束页码: 5285
语种: 英语
英文关键词: Argo floats ; fronts ; Malvinas Current ; Mercator operational model ; potential density ; satellite altimetry
英文摘要: We examine the surface and subsurface signature of ocean fronts closely associated with the Malvinas Current dynamics. We first evaluate the performances of the Mercator Ocean eddy permitting (1/12° spatial resolution) global operational system in the southwestern Atlantic Ocean over the last 10 years (2007–2016) using satellite, Argo float and in situ data collected near 41°S. Observations versus model comparisons show that the model correctly reproduces the general circulation and the complex hydrographic features of the study area including the vicinity of the Brazil-Malvinas Confluence. The model outputs accurately match the observations except in June 2015. The causes for the June 2015 mismatch are analyzed. We then used the model and satellite altimetry to identify isolines of absolute dynamic topography (ADT) and potential density at different depths associated with the mean front location and establish their correspondence with specific water mass boundaries. Frontal displacements as depicted in satellite ADT, model ADT, and model potential density at 450 m are in general agreement. The ADT and potential density at 450 m provide nonidentical and complementary information on eddies shed by the Polar Front (PF): while ADT depicts the surface circulation with PF eddies entrained into the energetic circulation over the deep Argentine Basin, potential density at 450 m is more effective at monitoring PF eddies feeding the Malvinas Current. ©2018. American Geophysical Union. All Rights Reserved.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/113412
Appears in Collections:气候减缓与适应

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作者单位: Laboratoire LOCEAN-IPSL, Sorbonne Université (UPMC, Univ. Paris 6)-CNRS-IRD-MNHN, Paris, France; MERCATOR-OCEAN, Parc Technologique du Canal, Ramonville St. Agne, France; CIMA/CONICET-UBA and UMI IFAECI-3351, Buenos Aires, Argentina; Departamento de Oceanografía, Servicio de Hidrografía Naval, DCAO/FCEN/UBA and UMI IFAECI-3351, CONICET, Buenos Aires, Argentina; CIMA/CONICET-UBA, DCAO/FCEN/UBA and UMI IFAECI-3351, Buenos Aires, Argentina

Recommended Citation:
Artana C.,Lellouche J.-M.,Park Y.-H.,et al. Fronts of the Malvinas Current System: Surface and Subsurface Expressions Revealed by Satellite Altimetry, Argo Floats, and Mercator Operational Model Outputs[J]. Journal of Geophysical Research: Oceans,2018-01-01,123(8)
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