MODELING OF THE GREENLAND, ICELAND, AND NORWEGIAN SEAS WITH A COUPLED SEA-ICE MIXED-LAYER ISOPYCNIC OCEAN MODEL
MODELING OF THE GREENLAND, ICELAND, AND NORWEGIAN SEAS WITH A COUPLED SEA-ICE MIXED-LAYER ISOPYCNIC OCEAN MODEL
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DOI：
10.1029/94jc01881
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发表时间：
1995-03-15
影响因子：
3.6
通讯作者：
OBERHUBER, JM
中科院分区：
文献类型：
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作者：
AUKRUST, T;OBERHUBER, JM
采用耦合海冰-混合层-等周期海洋模式模拟了格陵兰海、冰岛海和挪威海的环流。模式域由北大西洋组成，包括杜松子海和北冰洋。大西洋的经向边界大约在S 10度，在北极，白令海峡是封闭的。为了获得金银海当前系统的足够分辨率，水平分辨率从赤道附近和北极太平洋地区的2度×2度增加到金海的不到30公里×30公里。作为初始条件，使用观测到的年平均温度和盐度。地面强迫场是由月平均大气总量确定的。地表盐度(具有弱牛顿松弛耦合)被规定为年平均值。除了深海，杜松子酒海在几年后就会适应自己的物理状态。由于与北大西洋和北冰洋的相互作用，采用了更长的时间尺度。杜松子海的盐度已经变得略低于最初的数据。总体对流深度与20世纪80年代的观测结果一致，冰通量和上层海洋通量与前人的估计一致。流入北大西洋的中水和深水被低估了。然而，该模式再现了金海及其邻近盆地冰洋环流的主要特征。
A coupled sea ice - mixed layer - isopycnal ocean model is used to simulate the circulation in the Greenland, Iceland, and Norwegian (GIN) Seas. The model domain consists of the North Atlantic, including the GIN Sea and the Arctic Ocean. The Atlantic Ocean is bounded meridionally at about 10 degrees S, and in the Arctic the Bering Strait is closed. In order to obtain sufficient resolution of the current system in the GIN Sea, the horizontal resolution increases from 2 degrees x 2 degrees near the equator and in the Pacific sector of the Arctic to less than 30 km x 30 km in the GIN Sea. As initial conditions, observed annual mean temperature and salinity are used. The surface-forcing fields are determined from monthly mean atmospheric quantities. The surface salinity is prescribed (with a weak Newtonian relaxation coupling) as an annual mean. Except for the deep ocean, the GIN Sea adjusts to its own physics after a few years. Longer timescales are introduced owing to the interactions with the North Atlantic and the Arctic Oceans. The salinity in the GIN Sea has become slightly lower than the initial data. The general convection depth is consistent with observations during the 1980s; Ice fluxes and the fluxes in the upper ocean are consistent with previous estimates. The outflow of intermediate and deep water into the North Atlantic is underestimated. However, the model reproduces the main features of the ice-ocean circulation in the GIN Sea and the adjacent basins.