Biastoch, Arne , Käse, Rolf H. and Stammer, D. B. (2003) The Sensitivity of the Greenland-Scotland Ridge Overflow to Forcing Changes.. Journal of Physical Oceanography, 33 . pp. 2307-2319. DOI 10.1175/1520-0485(2003)033<2307:TSOTGR>2.0.CO;2.

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Abstract

Processes that influence the volume and heat transport across the Greenland–Scotland Ridge system are investigated in a numerical model with ° horizontal resolution. The focus is on the sensitivity of cross-ridge transports and the reaction of the subpolar North Atlantic Ocean circulation to changes in wind stress and buoyancy forcing on seasonal to interannual timescales. A general relation between changes in wind stress or cross-ridge density contrasts and the overturning transport of Greenland–Iceland–Norwegian Seas source water is established from a series of idealized experiments. The relation is used subsequently to interpret changes in an experiment over the years 1992–97 with realistic forcing. On seasonal and interannual timescales there is a clear correlation between heat flux and wind stress curl variability. The realistic model suggests a steady decrease in the strength of the cyclonic subpolar gyre of the North Atlantic with a corresponding decrease in heat transport during the 1990s

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