The Extrapolation of Vertical Profiles of Wind Speed within the Marine Atmospheric Surface layer Using the p Formula

M. Segal Department of Atmosphere Sciences, Colorado State University, Fort Collins, Colorado

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R. A. Pielke Department of Atmosphere Sciences, Colorado State University, Fort Collins, Colorado

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Abstract

Values of p for the exponent-type wind profile formulation, used in vertical extrapolations of wind speed, were derived for the marine atmospheric surface layer. Nomograms were constructed providing p values as dependent on a single elevation measurement of the air temperature, wind speed, and the surface water temperature. The range of p values in the unstable surface layer is between 0.02 to 0.2, while for stable situations the range is 0.1 to possibly ∼1.0. The values of p converge to about 0.2 for high wind speeds.

Abstract

Values of p for the exponent-type wind profile formulation, used in vertical extrapolations of wind speed, were derived for the marine atmospheric surface layer. Nomograms were constructed providing p values as dependent on a single elevation measurement of the air temperature, wind speed, and the surface water temperature. The range of p values in the unstable surface layer is between 0.02 to 0.2, while for stable situations the range is 0.1 to possibly ∼1.0. The values of p converge to about 0.2 for high wind speeds.

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