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| Kolodziejczyk, Nicolas; Llovel, William; Portela, Esther. |
| nterannual variability of Ocean Heat Content (OHC) is intimately linked to ocean water mass changes. Water mass characteristics are imprinted at the ocean surface and are modulated by climate variability on interannual to decadal time scales. In this study, we investigate the water mass change and their variability using an isopycnal decomposition of the OHC. For that purpose, we address the thickness and temperature changes of these water masses using both individual temperature‐salinity profiles and optimal interpolated products from Argo data. Isopycnal decomposition allows us to characterize the water masses interannual variability and decadal trends of volume and OHC. During the last decade (2006–2015), much of interannual and decadal warming is... |
| Tipo: Text |
Palavras-chave: Water masses; Ocean heat content; Interannual variability; Argo; Mode water; Atmospheric forcing. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00510/62128/66340.pdf |
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| Caldeira, Rui M. A.; Stegner, Alexandre; Couvelard, Xavier; Araujo, Isabel B.; Testor, Pierre; Lorenzo, Alvaro. |
| Island wakes are areas of a strong eddy activity influencing the availability and transport of organic matter in the ocean which, in turn impact biological productivity. Despite this, eddy formation in the lee of North Atlantic tropical islands is scarcely documented, except for the Canary Islands. Moreover, the occurrence of anticyclones leeward of Madeira has seldom been detected. During the summer of 2011, a multiplatform approach, combining satellite data with in situ measurements, was used to study an anticyclonic eddy generated in the lee of the Madeira Island. The main objective was to confirm recent numerical evidence suggesting that orographically perturbed winds can induce anticyclonic eddies leeward of Madeira, particularly during summer months.... |
| Tipo: Text |
Palavras-chave: Boundary-layer; Inertial instability; Mode water; Mixed layer; Intrathermocline eddies; Wake. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00197/30846/29209.pdf |
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| Gaillard, Fabienne; Mercier, Herle; Kermabon, Catherine. |
| The Programme Ocean Multidisciplinaire Meso Echelle (POMME) experiment was designed to describe and quantify the role of mesoscale processes in the subduction of mode waters in the northeast Atlantic. During 1 year ( September 2000 - October 2001), in situ measurements were conducted over a 8 degrees square area centered on 18 degrees W, 42 degrees N. We present the synthesis of the physical data set collected during this experiment. To improve time and space coverages, these measurements are combined with satellite information from sea surface temperature and altimetry. Daily fields of temperature, salinity, and stream function are produced over a seasonal cycle with a simplified Kalman filter. We analyze the annual cycle of the upper layer. The 1 year... |
| Tipo: Text |
Palavras-chave: Upper ocean seasonal cycle; Mesoscale; Northeast Atlantic; Subduction; Mode water; Mixed layer. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/publication-455.pdf |
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