Lagrangian Stochastic Modeling of Dispersion in the Planetary Boundary Layer.
Final rept. 15 May 90-4 Apr 95,
COLORADO UNIV AT BOULDER
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An existing Lagrangian stochastic model for dispersion in the convective boundary layer CBL was extended in two main ways. First, a model for the mean field dispersion in a rapidly-evolving CBL was developed and calculations of the crosswind-integrated concentration CWIC were carried out for a range of conditions. Second, a Lagrangian model for the CWIC and the mean and root-mean-square concentrations was developed that uses the velocity fields from large-eddy simulations as input. Calculations of the CWIC fields were made for three source heights and showed good agreement with the convection tank measurements of Willis and Deardorff. AN
- Atmospheric Physics