Wind-driven shelf/basin exchange on an Arctic shelf: The joint roles of ice cover extent and shelf-break bathymetry

Details Wind-driven shelf/basin exchange on an Arctic shelf: The joint roles of ice cover extent and shelf-break bathymetry Wind-driven shelf/basin exchange on an Arctic shelf: The joint roles of ice cover extent and shelf-break bathymetry

Jul 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003georl..30noce9c&link_type=abstract

Geophysical Research Letters, Volume 30, Issue 14, pp. OCE 9-1, CiteID 1778, DOI 10.1029/2003GL017526

Mathematics

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29

Oceanography: General: Arctic And Antarctic Oceanography, Oceanography: General: Continental Shelf Processes, Oceanography: General: Upwelling And Convergences, Oceanography: General: Climate And Interannual Variability (3309)

Scientific paper

The efficiency of shelf/basin exchange (SBE) in polar regions during summer is strongly moderated by the location of the ice edge relative to underlying topography. Numerical model calculations suggest that upwelling-favorable winds generate very little SBE so long as the ice edge remains shoreward of the shelf break, but an abrupt onset of shelf-break upwelling takes place when the ice edge retreats beyond the shelf break. A climatology (1968-2000) of ice conditions from the Canadian Shelf of the Beaufort Sea shows large interannual variability in ice edge extent and duration of ice-free conditions in summer. Similarly, available hydrographic data reflect a corresponding variability in water mass properties. Under scenarios of climate warming associated with greenhouse gas build-up, both the extent and duration of summer melt-back are predicted to increase, and this may have dramatic impacts on SBE and biological productivity.

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