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	Provedor de dados ArchiMer (2) Autor Losch, Martin (2) Dupont, Frederic (1) Kurahashi-nakamura, Takasumi (1) Laliberte, Frederic (1) Lei, Ji (1) Lemieux, Jean-francois (1) Lique, Camille (1) Paul, Andre (1) Roy, Francois (1) Mais... Palavra-chave AMOC (1) Data assimilation (1) Ice-ocean model (1) Landfast ice (1) Last Glacial Maximum (1) Ocean circulation (1) Ocean general circulation model (1) Proxy records (1) Tides (1) Mais... Tipo do documento Text (2) Ano 2018 (1) 2017 (1) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última The impact of tides on simulated landfast ice in a pan-Arctic ice-ocean model ArchiMer Lemieux, Jean-francois; Lei, Ji; Dupont, Frederic; Roy, Francois; Losch, Martin; Lique, Camille; Laliberte, Frederic. The impact of tides on the simulated landfast ice cover is investigated. Pan‐Arctic simulations are conducted with an ice‐ocean (CICE‐NEMO) model with a modified rheology and a grounding scheme. The reference experiment (without tides) indicates there is an overestimation of the extent of landfast ice in regions of strong tides such as the Gulf of Boothia, Prince Regent Inlet and Lancaster Sound. The addition of tides in the simulation clearly leads to a decrease of the extent of landfast ice in some tidally active regions. This numerical experiment with tides is more in line with observations of landfast ice in all the regions studied. Thermodynamics and changes in grounding cannot explain the lower landfast ice area when tidal forcing is included. We... Tipo: Text Palavras-chave: Landfast ice; Tides; Ice-ocean model. Ano: 2018 URL: https://archimer.ifremer.fr/doc/00460/57132/59053.pdf Dynamical reconstruction of the global ocean state during the Last Glacial Maximum ArchiMer Kurahashi-nakamura, Takasumi; Paul, Andre; Losch, Martin. The global ocean state for the modern age and for the Last Glacial Maximum (LGM) was dynamically reconstructed with a sophisticated data assimilation technique. A substantial amount of data including global seawater temperature, salinity (only for the modern estimate), and the isotopic composition of oxygen and carbon (only in the Atlantic for the LGM) were integrated into an ocean general circulation model with the help of the adjoint method, thereby the model was optimized to reconstruct plausible continuous fields of tracers, overturning circulation and water mass distribution. The adjoint-based LGM state estimation of this study represents the state of the art in terms of the length of forward model runs, the number of observations assimilated, and the... Tipo: Text Palavras-chave: Last Glacial Maximum; Ocean circulation; AMOC; Proxy records; Ocean general circulation model; Data assimilation. Ano: 2017 URL: https://archimer.ifremer.fr/doc/00383/49466/49951.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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