S57 Differences in roughness length and its impacts on the atmosphere of the boundary layer

Sunday, 23 January 2011
Daniel J. Vecellio, Texas A&M University, College Station, TX; and A. I. Quintanar

Land cover has a direct impact on weather and climate. Hence, to change characteristics of the surface would mean to change characteristics of the atmosphere. In this study, surface roughness was modified in the Ohio Valley to see how different atmospheric variables would be affected. While changes were seen in sensible and latent heat fluxes, friction velocity and ground temperature, changes to the overlying circulation within the boundary layer are very prominent. These changes in the wind field within the boundary layer could cause the dispersion of gases, particles, and pollutants to vary greatly. This could significantly affect air quality, human health, and quality of life among the residents of the impacted area.
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