The Sensitivity of the Greenland-Scotland Ridge Overflow to Forcing Changes.
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...
| Main Authors: | , , |
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| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
AMS (American Meteorological Society)
2003
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| Subjects: | |
| Online Access: | https://oceanrep.geomar.de/id/eprint/6990/ https://oceanrep.geomar.de/id/eprint/6990/1/1520-0485%282003%29033_2307_tsotgr_2.0.co%3B2.pdf https://doi.org/10.1175/1520-0485(2003)033<2307:TSOTGR>2.0.CO;2 |
| Summary: | 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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