Application of a mixed-layer model to bare soil surfaces |
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| Authors: | Michael D Novak |
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| Institution: | (1) Department of Soil Science, University of British Columbia, 2357 Main Mall, Suite 248, V6T 2A2 Vancouver, B.C., Canada |
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| Abstract: | A model that couples the surface energy balance equation, a surface hydraulic resistance equation, and the force-restore soil temperature model to a mixed-layer model of the planetary boundary layer is described. The mixed layer is separated from the soil by a relatively thin surface layer and is overlain by a stable free atmosphere with prescribed profiles of potential temperature and water vapour density. The model is in reasonably good agreement with daytime micrometeorological measurements made at a wet bare site at Agassiz, British Columbia, and a desert site at Pampa de La Joya, Peru. The sensitivity of the mixed-layer model to conditions in the free atmosphere, to the parameters describing the growth of the mixed layer, and to surface roughness lengths, surface hydraulic resistance, and windspeed is examined. |
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