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Model Simulations of Mesoscale Eddies and Deep Convection in the labrador sea

Advances in Atmospheric Sciences 2014年第4期31卷 743-754页

作者： Jieshun ZHU Entcho DEMIROV Ying ZHANG Ania POLOMSKA-HARLICK Center for Ocean–Land–Atmosphere Studies George Mason University Department of Physics and Physical Oceanography Memorial University of Newfoundland Department of Atmospheric and Oceanic Science University of Maryland College Park

Deep convection in the labrador sea is confined within a small region in the southwest part of the *** strength of deep convection in this region is related to the local atmospheric and ocean characteristics,which favor processes of deep convection preconditioning and intense air-sea exchange during the winter *** this study,we explored the effect of eddy-induced flux transport on the stratification of the labrador sea and the properties of deep *** from an eddy-resolving ocean model are presented for the labrador *** general circulation was well simulated by the model,including the seasonal cycle of the deep labrador *** simulated distribution of the surface eddy kinetic energy was also close to that derived from Topex-Poseidon satellite altimeter data,but with smaller *** energy transfer diagnostics indicated that Irminger rings are generated by both baroclinic and barotropic processes; however,when they propagate into the interior basin,the barotropic process also disperses them by converting the eddy energy to the mean *** contrast to eddy-permitting simulations,deep convection in the labrador sea was better represented in the eddyresolving model regarding their lateral *** analysis indicated that the improvement might be due to the lateral eddy flux associated with the resolved Irminger rings in the eddy-resolving model,which contributes to a realistic position of the isopycnal dome in the labrador sea and correspondingly a realistic site of deep convection.

关键词： mesoscale eddies deep convection labrador sea model simulation

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A coupled multi-category sea ice model and POM for Baffin Bay and the labrador sea

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Chinese Journal of Polar Science 2008年第2期19卷 149-158页

作者： Tang Zhili Bedford Institute of Oceanography Fisheries and Oceans Canada Dartmouth NS Canada

An overview of the seasonal variation of sea-ice cover in Baffin Bay and the labrador sea is given. A coupled ice-ocean model, CECOM, has been developed to study the seasonal variation and associated ice-ocean processes. The sea-ice component of the model is a multi-category ice model in which mean concentration and thickness are expressed in terms of a thickness distribution function. Ten categories of ice thickness are specified in the model. sea ice is coupled dynamically and thermodynamically to the Princeton Ocean Model. Selected results from the model including the seasonal variation of sea ice in Baffin Bay, the North Water polynya and ice growth and melt over the labrador Shelf are presented.

关键词： Baffin Bay labrador sea sea ice model.

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