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Article: Large-eddy boundary layer entrainment
- Article from:
- Journal of the Atmospheric Sciences
- Article date:
- August 15, 1998
- Author:
CopyrightCopyright American Meteorological Society Aug 15, 1998. Provided by ProQuest LLC. (Hide copyright information)
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ABSTRACT
A series of large-eddy simulations have been performed to explore boundary layer entrainment under conditions of a strongly capped inversion layer with the boundary layer dynamics driven dominantly by buoyant forcing Different conditions explored include cloud-top cooling versus
surface heating, smoke clouds versus water clouds, variations in cooling height and optical depth of longwave radiation, degree of cloud-top evaporative instability, and modest wind shear. Boundary layer entrainment involves transport and mixing over a full range of length scales, as warm fluid from the region of the capping inversion is first transported into the boundary layer and then mixed throughout. ...