Simulations of the Arctic Boundary Current in an eddy-resolving global ocean model

摘要: The Arctic Ocean is shielded from winds by sea ice and strongly stratified, resulting in extremely low mixing rates. In this quiescent ocean, currents along the continental shelves become principal dynamical features of circulation. Observations model results suggest existence a fast oceanic current Ocean, Circumpolar Boundary Current (ACBC). flows counterclockwise (cyclonically) shelf break Siberian, Alaskan Canadian all way around margins, leaving through western Fram Strait, taking about two decades to complete circuit (Aksenov et al., 2011). Simulations with an eddy-resolving global 1/12 degree NEMO show that ACBC consists several jets fastest flow occurring at break. We compare models observations examine mechanisms driving ACBC. Through analysis simulations performed eddy-resolving, eddy-permitting non-eddying configurations we investigate effect resolution on current.