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Originally published in Science Express on 15 January 2004
Science 13 February 2004:
Vol. 303. no. 5660, pp. 978 - 983
DOI: 10.1126/science.1091901
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Research Articles

Satellite Measurements Reveal Persistent Small-Scale Features in Ocean Winds

Dudley B. Chelton,1 Michael G. Schlax,1 Michael H. Freilich,1 Ralph F. Milliff2

Four-year averages of 25-kilometer-resolution measurements of near-surface wind speed and direction over the global ocean from the QuikSCAT satellite radar scatterometer reveal the existence of surprisingly persistent small-scale features in the dynamically and thermodynamically important curl and divergence of the wind stress. Air-sea interaction over sea surface temperature fronts throughout the world ocean is evident in both the curl and divergence fields, as are the influences of islands and coastal mountains. Ocean currents such as the Gulf Stream generate distinctive patterns in the curl field. These previously unresolved features have important implications for oceanographic and air-sea interaction research.

1 College of Oceanic and Atmospheric Sciences, 104 Ocean Administration Building, Oregon State University, Corvallis OR 97331–5503, USA.
2 Colorado Research Associates Division, Northwest Research Associates, 3380 Mitchell Lane, Boulder, CO 80301, USA.

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