Abstract
Abstract Individual terms of the mass, heat, and moisture budget equations are evaluated for an atmospheric control volume in Colorado's Sinbad Basin using tethered balloon and surface energy budget data obtained during a 16.5-h period on 1516 July 1988. The basin was chosen for its simple topography and arid climate, which simplified the evaluation of some of the budget terms. The paper documents the many assumptions that are required to evaluate the mass, heat, and moisture budget equations in confined terrain using small datasets. The nighttime outflow of air from the basin produced a compensatory mean sinking motion of 0.026 m s−1 at the top of the basin control volume and brought warm air into the top of the basin atmosphere. In contrast to previous reports for well-drained valleys, a high rate of atmospheric cooling continued in this basin throughout the entire night. The cooling is attributed primarily to turbulent sensible heat flux divergence and, to a lesser extent, radiative flux divergence. M...
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