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Mechanism of interannual to decadal variability of the North Atlantic circulation
- Article from:
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Journal of Climate
- Article date:
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May 15, 2001
- Author:
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;
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Copyright informationCopyright American Meteorological Society May 15, 2001. Provided by ProQuest LLC. (Hide copyright information)
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ABSTRACT
A model of the Atlantic Ocean was forced with decadal-scale time series of surface fluxes taken from the National Centers for Environmental Prediction-National Center for Atmospheric Research reanalysis. The bulk of the variability of the oceanic circulation is found to be related to the North Atlantic oscillation (NAO). Both realistic experiments and idealized sensitivity studies with the model show a fast (intraseasonal timescale) barotropic response and a delayed (timescale about 6-8 yr) baroclinic oceanic response to the NAO. The fast response to a high NAO constitutes a barotropic anticyclonic circulation anomaly near the subpolar front with a substantial decrease of the ...
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