The Effect of Observed Ice Conditions on the Drag Coefficient in the Summer East Greenland Sea Marginal Ice Zone
MetadataShow full item record
The summer East Greenland Sea marginal ice zone is a region characterized by extreme horizontal variations of surface roughness characteristics. The surface drag coefficient is found to be correlated with these roughness characteristics, in particular, ice concentration and ice floe roughness and size. The estimates of wind stress and wind speed yield neutral drag coefficients CDN with standard deviations of 2.3 ± 0.8 × 10−3 for areas with less than 40% ice concentration and 4.0 ± 1.1 × 10−3 for ice concentrations greater than 70%. Much of the variation in CDN for a given ice concentration is explained by differences in ice floe size and roughness. Very small, concentrated, rough floes that have been affected by wave action produce twice as much wind stress (CDN = 4.2 ± 0.7 × 10−3) as relatively large, flat floes (CDN = 2.1 ± 0.6 × 10−3) and 4 times as much as typical open ocean for a given wind speed and stability. The drag coefficients in this region are higher than other marginal ice zones, probably a result of the presence of large amounts of multiyear ice floes that extend higher above the ocean surface and create more drag than first‐year floes.
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
Showing items related by title, author, creator and subject.
The Effect of Observed Ice Conditions on the Drag Coefficient in the Summer East Greenland Sea Marginal Ice Zone Guest, P.S.; Davidson, K.L. (1987-06-30);The summer East Greenland Sea marginal ice zone is a region characterized by extreme horizontal variations of surface roughness characteristics. The surface drag coefficient is found to be correlated with these roughness ...
Wells, Benjamin B. (Monterey, CA; Naval Postgraduate School, 12);Sensible and latent heat fluxes over the Marginal Ice Zone (MIZ) are an area of active research. Polar lows that develop near the MIZ have far-reaching impacts on shipping and personnel but are often misrepresented by ...
Andreas, Edgar L.; Horst, Thomas W.; Grachev, Andrey A.; Persson, P. Ola G.; Fairall, Christopher W.; Guest, Peter S.; Jordan, Rachel E. (2010-04);The surface of the Arctic Ocean in summer is a mix of sea ice and water in both leads and melt ponds. Here we use data collected at multiple sites during the year-long experiment to study the SurfaceHeatBudget of the ...