Russian Journal of Earth Sciences Russian Journal of Earth Sciences Russian Journal of Earth Sciences 1681-1208 46561 10.2205/2020ES000747 ОРИГИНАЛЬНЫЕ СТАТЬИ ORIGINAL ARTICLES ОРИГИНАЛЬНЫЕ СТАТЬИ Topographic experiments over dynamical processes in the Norwegian Sea Topographic experiments over dynamical processes in the Norwegian Sea Belonenko Tatyana V Belonenko Tatyana V Travkin Vladimir S Travkin Vladimir S Koldunov Aleksey V Koldunov Aleksey V Volkov Denis L Volkov Denis L Saint Petersburg State University ru Saint Petersburg State University ru Saint Petersburg State University ru Saint Petersburg State University ru Saint Petersburg State University ru Saint Petersburg State University ru Atlantic Oceanographic and Meteorological Laboratory, NOAA ru Atlantic Oceanographic and Meteorological Laboratory, NOAA ru 21 1 29 10 2021 https://rjes.ru/en/nauka/article/46561/view

The Norwegian Atlantic Current is significantly steered by large topographic features of the Norwegian Sea. The geometry of topographic features in the region is highly variable, but the influence of this variation on the formation of a quasi-permanent anticyclonic vortex located in the center of the Lofoten Basin (Lofoten Vortex) is poorly understood. Four sensitivity experiments with a regional configuration of the Massachusetts Institute of Technology general circulation model have been carried out with an objective to investigate the role of bottom topography on the formation of the Lofoten Vortex in the Norwegian Sea. We find that the bottom topography and especially the geometry of subsurface ridges are critical for the dynamics of the Norwegian Sea and stability of the Lofoten Vortex.

The Norwegian Atlantic Current is significantly steered by large topographic features of the Norwegian Sea. The geometry of topographic features in the region is highly variable, but the influence of this variation on the formation of a quasi-permanent anticyclonic vortex located in the center of the Lofoten Basin (Lofoten Vortex) is poorly understood. Four sensitivity experiments with a regional configuration of the Massachusetts Institute of Technology general circulation model have been carried out with an objective to investigate the role of bottom topography on the formation of the Lofoten Vortex in the Norwegian Sea. We find that the bottom topography and especially the geometry of subsurface ridges are critical for the dynamics of the Norwegian Sea and stability of the Lofoten Vortex.

 Norwegian Sea Lofoten Basin Norwegian Basin bottom topography MITgcm topography experiments Norwegian Sea Lofoten Basin Norwegian Basin bottom topography MITgcm topography experiments The authors acknowledge the support of the Russian Science Foundation (RSF, project No. 18-17-00027). Numerical experiments were conducted by DLV with support from the NOAA Atlantic Oceanographic and Meteorological Laboratory under the auspices of the Cooperative Institute of Marine and Atmospheric Studies (CIMAS) of the University of Miami and NOAA, cooperative agreement NA20OAR4320472.

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