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An assessment of the Arctic Ocean in a suite of interannual CORE-II simulations. Part III: Hydrography and fluxes ArchiMer
Ilicak, Mehmet; Drange, Helge; Wang, Qiang; Gerdes, Rudiger; Aksenov, Yevgeny; Bailey, David; Bentsen, Mats; Biastoch, Arne; Bozec, Alexandra; Boening, Claus; Cassou, Christophe; Chassignet, Eric; Coward, Andrew C.; Curry, Beth; Danabasoglu, Gokhan; Danilov, Sergey; Fernandez, Elodie; Fogli, Pier Giuseppe; Fujii, Yosuke; Griffies, Stephen M.; Iovino, Doroteaciro; Jahn, Alexandra; Jung, Thomas; Large, William G.; Lee, Craig; Lique, Camille; Lu, Jianhua; Masina, Simona; Nurser, A. J. George; Roth, Christina; Salas Y Melia, David; Samuels, Bonita L.; Spence, Paul; Tsujino, Hiroyuki; Valcke, Sophie; Voldoire, Aurore; Wang, Xuezhu; Yeager, Steve G..
In this paper we compare the simulated Arctic Ocean in 15 global ocean–sea ice models in the framework of the Coordinated Ocean-ice Reference Experiments, phase II (CORE-II). Most of these models are the ocean and sea-ice components of the coupled climate models used in the Coupled Model Intercomparison Project Phase 5 (CMIP5) experiments. We mainly focus on the hydrography of the Arctic interior, the state of Atlantic Water layer and heat and volume transports at the gateways of the Davis Strait, the Bering Strait, the Fram Strait and the Barents Sea Opening. We found that there is a large spread in temperature in the Arctic Ocean between the models, and generally large differences compared to the observed temperature at intermediate depths. Warm bias...
Tipo: Text Palavras-chave: Arctic Ocean; Atlantic Water; St. Anna Trough; Density currents; CORE-II atmospheric forcing.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00317/42864/42295.pdf
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Dynamics of an Equatorial River Plume: Theory and Numerical Experiments Applied to the Congo Plume Case ArchiMer
Vic, Clement; Berger, Henrick; Treguier, Anne-marie; Couvelard, Xavier.
The Congo River has the second largest rate of flow in the world and is mainly responsible for the broad tongue of low-salinity water that is observed in the Gulf of Guinea. Despite their importance, near-equatorial river plumes have not been studied as thoroughly as midlatitude plumes and their dynamics remain unclear. Using both theory and idealized numerical experiments that reproduce the major characteristics of the region, the authors have investigated the dynamics of the Congo River plume and examine its sensitivity to different forcing mechanisms. It is found that near-equatorial plumes are more likely to be surface trapped than midlatitude plumes, and the importance of the effect in describing the strong offshore extent of the low-salinity tongue...
Tipo: Text Palavras-chave: Geographic location; Entity; Rivers; Circulation; Dynamics; Coastal flows; Density currents; Eddies; Nonlinear dynamics; Topographic effects.
Ano: 2014 URL: https://archimer.ifremer.fr/doc/00187/29850/28298.pdf
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