Physics
Scientific paper
Jan 2007
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007georl..3401604k&link_type=abstract
Geophysical Research Letters, Volume 34, Issue 1, CiteID L01604
Physics
9
Oceanography: Physical: Air/Sea Interactions (0312, 3339), Oceanography: Physical: Eddies And Mesoscale Processes, Oceanography: Physical: General Circulation (1218, 1222), Oceanography: Physical: Hydrography And Tracers
Scientific paper
The effects of ocean surface currents and dominant waves on the wind stress drag coefficient (C D ) are examined over the global ocean. Major findings are as follows: (1) the combination of both ocean wave and current speeds can result in reductions in daily C D (>10%), but the notable impact of the latter is only evident in the tropical Pacific Ocean; (2) the presence of waves generally makes winds weaker and C D lower almost everywhere over the global ocean; (3) strong ocean currents near the western boundaries (Kuroshio and Gulf Stream) do not substantially influence C D since the winds and currents are not always aligned; and (4) the change in speed used in bulk flux parameterization also causes large changes in fluxes. Globally, the combined outcome of ocean currents and waves is to reduce C D by about (2%), but spatial variations (0% to 14%) do exist.
Bourassa Mark A.
Kara Birol A.
Metzger Joseph E.
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