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- Publisher
- American Meteorological Society
- Copyright
- Copyright © 2002 American Meteorological Society
- ISSN
- 1520-0485
- DOI
- 10.1175/1520-0485(2003)033<2307:TSOTGR>2.0.CO;2
- Publisher site
- See Article on Publisher Site
Abstract
Processes that influence the volume and heat transport across the Greenland––Scotland Ridge system are investigated in a numerical model with ⅙⅙°° 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.
Journal
Journal of Physical Oceanography – American Meteorological Society
Published: Feb 11, 2002