A model for computing small-scale wind variations over a water surface |
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| Authors: | S Venkatesh M B Danard |
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| Institution: | (1) Atmospheric Environment Service, Downsview, Canada;(2) University of Waterloo, Waterloo, Ontario, Canada |
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| Abstract: | Based on the primitive equations, a one-level model is described for computing surface winds under the meso-scale influences of orography, friction and heating. The effects of atmospheric stability and land-water contrasts are examined in detail. Results of testing the model with data collected during the International Field Year for the Great Lakes (IFYGL) in 1972 are given. The model is able to simulate land and lake breezes as well as meso-scale effects due to gradients in surface water temperature. Compared to simple methods of computing surface winds, use of the model reduces the vector error in estimates of surface winds by about 1.25 m s–1 on the average. |
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