American Society of Civil Engineers

Estimation of Winds over the Great Lakes

by Donald T. Resio, (Research Physical Scientist, Wave Dynamics Div., Hydr. Lab., U.S. Army Waterway Experiment Station, Vicksburg, Miss.) and C. Linwood Vincent, (Research Physical Scientist, Wave Dynamics Div., Hydr. Lab., U.S. Army Waterways Experiment Station, Vicksburg, Miss.)

Journal of the Waterway, Port, Coastal and Ocean Division
, Vol. 103, No. 2, May 1977, pp. 265-283

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Document type: Journal Paper
Abstract: Past efforts to estimate wind speeds over a large lake have met with very limited success. The purpose of this study is to demonstrate that, with a combined theoretical-empirical approach, winds over a lake can be obtained from transformed wind speeds at nearby land stations. The theoretical results provide a basis for comparison of many empirical data sets and establish a rational means of analyzing the expected differences between winds over land and those over a marine surface. This in turn affords a means of examining systematic variations in the ratio of wind speeds over a lake to wind speed over land. The good agreement between theory and observation indicates that wind estimates over the lake can be made for a wide range of synoptic conditions with an rms error of 5 knots. The theoretical curve for the lake wind/land wind ratio provides an estimate of lake winds well beyond wind speeds for which there are good empirical data.

ASCE Subject Headings:
Wind speed
Wind pressure
Coastal engineering
Storm surges