A Parameterization of Overwater Friction Velocity During Hurricanes

S. A. Hsu

doi:10.2112/05-0511.1

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S. A. Hsu¹

¹Coastal Studies Institute and Department of Oceanography and Coastal Sciences, Louisiana State University, Baton Rouge, LA 70803, U.S.A., sahsu@lsu.edu

Abstract

On the basis of recent advances in the formulations of atmospheric stability and sea-surface roughness, a parameterization of overwater friction velocity (u_*) is derived. It is shown that during hurricane conditions, u_* can be obtained from U₁₀, the wind speed at 10 m height. Verifications of the proposed equation against the correspondent data sets based on boundary-layer theories from three hurricanes are successful for operational applications.

Citation Download Citation

S. A. Hsu "A Parameterization of Overwater Friction Velocity During Hurricanes," Journal of Coastal Research 2007(231), 270-274, (1 January 2007). https://doi.org/10.2112/05-0511.1

Received: 6 May 2005; Accepted: 5 July 2006; Published: 1 January 2007

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