Geostrophic Drag Coefficients over Sea Ice
Loading...
Authors
Overland, James E.
Davidson, Kenneth L.
Subjects
Advisors
Date of Issue
1992
Date
Publisher
Language
Abstract
The geostrophic drag coefficient, Cg = u*/G, and turning angle, α were measured October through November 1988 from a 120 km array of 6 drifting buoys and a drifting ship in the northern Barents Sea/Arctic Ocean during CEAREX; u* is the friction velocity, G is the geostrophic wind, and α is the angle between surface stress and equation image . The median Cg was 0.029 with hinge values (quartiles) of 0.023 and 0.034 and the median α was 25° with hinge values of 15° and 32°. The median values are representative for the nonsummer Arctic away from marginal seas and marginal ice zones. Surface air temperature, cloud amount, and the lapse rate above the inversion base were not good predictors of the influence of boundary layer stability on Cg. The geostrophic drag coefficient was most sensitive to the temperature difference across the boundary layer from the surface to the top of the inversion.
Type
Article
Description
The article of record as published may be found at http://dx.doi.org/10.3402/tellusa.v44i1.17118
Series/Report No
Department
Meteorology
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
38 p.
Citation
Overland, James E., and Kenneth L. Davidson. "Geostrophic drag coefficients over sea ice." Tellus A: Dynamic Meteorology and Oceanography 44, no. 1 (1992): 54-66.
Distribution Statement
Rights
This 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.