Mathematics – Logic
Scientific paper
Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008georl..3506601s&link_type=abstract
Geophysical Research Letters, Volume 35, Issue 6, CiteID L06601
Mathematics
Logic
7
Oceanography: Physical: Air/Sea Interactions (0312, 3339), Atmospheric Processes: Mesoscale Meteorology, Oceanography: Physical: Upper Ocean And Mixed Layer Processes, Oceanography: General: Water Masses
Scientific paper
It has been speculated that low-level reverse tip-jets, caused by the interaction of synoptic-scale atmospheric flow and Greenland, are an important mechanism for forcing open ocean convection in the south-east Labrador Sea. Here float data and meteorological reanalysis fields from the winter of 1996/1997, in combination with a simple mixed-layer ocean model, are used to show that, although relatively deep ocean convection did occur during this winter, the primary forcing mechanism was cold-air outbreaks from the Labrador coast rather than the smaller scale reverse tip-jets. During this winter, the North Atlantic Oscillation (NAO) was in a weak positive phase. Similar treatments of the winters of 1994/1995 (strong, positive NAO) and 1995/1996 (strong, negative NAO) suggest that the result is robust regardless of the state of the NAO.
Heywood Karen J.
Renfrew Ian A.
Sproson David A. J.
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