Vertical profiles of wind speed,snow concentration,and humidity in blowing snow |
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Authors: | R. A. Schmidt |
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Affiliation: | (1) U.S.D.A. Rocky Mountain Forest and Range Experiment Station, 240 West Prospect Street, 80526 Fort Collins, Colorado, USA |
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Abstract: | To estimate the sublimation rate of snow during relocation by wind, sizes and concentration of ice crystal fragments were measured at 6 levels in the lowest 1 m, during ten 10-min runs, in a nocturnal blizzard. Power-law functions of height described the decrease in mean particle diameter and concentration. The vertical gradient of water vapor, measured with a thermocouple psychrometer, was approximately linear from 0.2 to 1.0m above the surface. Evaporation of blowing snow over 3 km of transport distance was estimated to be 39% of transport rate, under conditions of the experiment. |
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