Modeling of Cloud-top Entrainment
WEST VIRGINIA UNIV MORGANTOWN DEPT OF MECHANICAL AND AEROSPACE ENGINEERING
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Our long term goals are to understand the dynamics of atmospheric motions on scales of order 10 m - 10 km in sufficient detail to be able to provide a consistent subgrid scale turbulent closure for models across a range of scales, and to be able to utilize simulated variances as a measure of forecast predictability. The chief objective of the present grant is to better understand the physical processes which control the rate of entrainment fluxes of heat and moisture across the capping inversion of the atmospheric boundary layer, and to formulate a closure model for cloud-top entrainment that is consistent for a broad range of boundary layer conditions and forcings. Ideally, this closure model would allow one to produce a simulation at any desired level of resolution, with the results of lower resolution simulations being approximately similar to results obtained by appropriate spatial filtering of the higher resolution simulation.
- Physical Chemistry