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	Provedor de dados ArchiMer (4) Autor Allan, R. P. (1) Arhan, Michel (1) Charrassin, Jean-benoit (1) Desbruyeres, Damien (1) Faure, Vincent (1) Gladyshev, Sergey (1) Hyder, P. (1) Liu, C. (1) Michel, Sylvain (1) Palmer, M. D. (1) Pellichero, Violaine (1) Roberts, C. D. (1) Roquet, Fabien (1) Sallee, Jean-baptiste (1) Schmidtko, Sunke (1) Smith, D. (1) Speich, Sabrina (1) Treguier, Anne-marie (1) Vandermeirsch, Frederic (1) Mais... Palavra-chave Heat budget (4) Southern Ocean (2) Agulhas Current retroflection (1) Air sea flux (1) Bay of Biscay (1) Climatic change (1) Elephant seals (1) Heat content (1) Heat transports (1) Interannual (1) Interannual temperature variability (1) Mixed layer (1) Ocean circulation model (1) Ocean surface mixed layer (1) Salt budget (1) Sea-ice (1) Surface fluxes (1) Variability (1) Mais... Tipo do documento Text (4) Ano 2017 (2) 2011 (1) 2009 (1) País France (4) Idioma Inglês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última The ocean mixed layer under Southern Ocean sea-ice: Seasonal cycle and forcing ArchiMer Pellichero, Violaine; Sallee, Jean-baptiste; Schmidtko, Sunke; Roquet, Fabien; Charrassin, Jean-benoit. The oceanic mixed layer is the gateway for the exchanges between the atmosphere and the ocean; in this layer, all hydrographic ocean properties are set for months to millennia. A vast area of the Southern Ocean is seasonally capped by sea-ice, which alters the characteristics of the ocean mixed layer. The interaction between the ocean mixed layer and sea-ice plays a key role for water mass transformation, the carbon cycle, sea-ice dynamics, and ultimately for the climate as a whole. However, the structure and characteristics of the under-ice mixed layer are poorly understood due to the sparseness of in situ observations and measurements. In this study, we combine distinct sources of observations to overcome this lack in our understanding of the polar... Tipo: Text Palavras-chave: Southern Ocean; Mixed layer; Sea-ice; Elephant seals; Salt budget; Heat budget. Ano: 2017 URL: https://archimer.ifremer.fr/doc/00383/49400/49901.pdf Surface flux and ocean heat transport convergence contributions to seasonal and interannual variations of ocean heat content ArchiMer Roberts, C. D.; Palmer, M. D.; Allan, R. P.; Desbruyeres, Damien; Hyder, P.; Liu, C.; Smith, D.. We present an observation-based heat budget analysis for seasonal and interannual variations of ocean heat content (H) in the mixed layer (H-mld) and full-depth ocean (H-tot). Surface heat flux and ocean heat content estimates are combined using a novel Kalman smoother-based method. Regional contributions from ocean heat transport convergences are inferred as a residual and the dominant drivers of H-mld and H-tot are quantified for seasonal and interannual time scales. We find that non-Ekman ocean heat transport processes dominate H-mld variations in the equatorial oceans and regions of strong ocean currents and substantial eddy activity. In these locations, surface temperature anomalies generated by ocean dynamics result in turbulent flux anomalies that... Tipo: Text Palavras-chave: Heat content; Heat transports; Interannual; Surface fluxes; Variability; Heat budget. Ano: 2017 URL: https://archimer.ifremer.fr/doc/00387/49813/50388.pdf Heat budget of the surface mixed layer south of Africa ArchiMer Faure, Vincent; Arhan, Michel; Speich, Sabrina; Gladyshev, Sergey. ARGO hydrographic profiles, two hydrographic transects and satellite measurements of air-sea exchange parameters were used to characterize the properties and seasonal heat budget variations of the Surface Mixed Layer (SML) south of Africa. The analysis distinguishes the Subtropical domain (STZ) and the Subantarctic Zone (SAZ), Polar Frontal Zone (PFZ) and Antarctic Zone (AZ) of the Antarctic Circumpolar Current. While no Subantarctic Mode Water forms in that region, occurrences of deep SML (up to similar to 450 m) are observed in the SAZ in anticyclones detached from the Agulhas Current retroflection or Agulhas Return Current. These are present latitudinally throughout the SAZ, but preferentially at longitudes 10-20A degrees E where, according to previous... Tipo: Text Palavras-chave: Ocean surface mixed layer; Heat budget; Southern Ocean; Agulhas Current retroflection. Ano: 2011 URL: http://archimer.ifremer.fr/doc/00048/15953/15833.pdf Temperature variability in the Bay of Biscay during the past 40 years, from an in situ analysis and a 3D global simulation ArchiMer Michel, Sylvain; Treguier, Anne-marie; Vandermeirsch, Frederic. A global in situ analysis and a global ocean simulation are used jointly to study interannual to decadal variability of temperature in the Bay of Biscay, from 1965 to 2003. A strong cooling is obtained at all depths until the mid-1970's, followed by a sustained warming over similar to 30 years. Strong interannual fluctuations are superimposed on this slow evolution. The fluctuations are intensified at the surface and are weakest at similar to 500 m. A good agreement is found between the observed and simulated temperatures, in terms of mean values, interannual variability and time correlations. Only the decadal trend is significantly underestimated in the simulation. A comparison to satellite sea surface temperature (SST) data over the last 20 years is also... Tipo: Text Palavras-chave: Ocean circulation model; Air sea flux; Heat budget; Climatic change; Interannual temperature variability; Bay of Biscay. Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6680.pdf Registros recuperados: 4 Primeira ... 1 ... Última

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