A new high-resolution unstructured grid finite volume Arctic Ocean model (AO-FVCOM): An application for tidal studies

被引:75
作者
Chen, Changsheng [1 ,2 ]
Gao, Guoping [1 ,3 ]
Qi, Jianhua [1 ]
Proshutinsky, Andrey [4 ]
Beardsley, Robert C. [4 ]
Kowalik, Zygmunt [5 ]
Lin, Huichan [1 ]
Cowles, Geoffrey [1 ]
机构
[1] Univ Massachusetts Dartmouth, Sch Marine Sci & Technol, Dept Fisheries Oceanog, New Bedford, MA 02748 USA
[2] Shanghai Ocean Univ, Marine Ecosyst & Environm Lab, Shanghai, Peoples R China
[3] Ocean Univ China, Dept Phys Oceanog, Qingdao, Peoples R China
[4] Woods Hole Oceanog Inst, Dept Phys Oceanog, Woods Hole, MA 02543 USA
[5] Univ Alaska Fairbanks, Inst Marine Sci, Fairbanks, AK 99775 USA
基金
美国国家科学基金会;
关键词
SOUTHERN WEDDELL SEA; DIURNAL SHELF WAVES; INTERNAL TIDES; COASTAL OCEAN; BARENTS SEA; ICE COVER; CIRCULATION; ENHANCEMENT; CURRENTS; FRONTS;
D O I
10.1029/2008JC004941
中图分类号
P7 [海洋学];
学科分类号
0707 ;
摘要
A spherical coordinate version of the unstructured grid 3-D FVCOM (finite volume coastal ocean model) has been applied to the Arctic Ocean to simulate tides with a horizontal resolution ranging from 1 km in the near-coastal areas to 15 km in the deep ocean. By accurately resolving the irregular coastlines and bathymetry in the Arctic Ocean coastal regions, this model reproduces the diurnal (K-1 and O-1) and semidiurnal (M-2 and S-2) tidal wave dynamics and captures the complex tidal structure along the coast, particularly in the narrow straits of the Canadian Archipelago. The simulated tidal parameters (harmonic constituents of sea surface elevation and currents) agree well with the available observational data. High-resolution meshes over the continental shelf and slope capture the detailed spatial structure of topographic trapped shelf waves, which are quite energetic along the Greenland, Siberia, and Spitsbergen continental slope and shelf break areas. Water stratification influences the vertical distribution of tidal currents but not the water transport and thus tidal elevation. The comparison with previous finite difference models suggests that horizontal resolution and geometric fitting are two prerequisites to simulate realistically the tidal energy flux in the Arctic Ocean, particularly in the Canadian Archipelago.
引用
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页数:20
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