Accession Number : ADA295701
Title : Lagrangian Stochastic Modeling of Dispersion in the Planetary Boundary Layer.
Descriptive Note : Final rept. 15 May 90-4 Apr 95,
Corporate Author : COLORADO UNIV AT BOULDER
Personal Author(s) : Weil, Jeffrey C.
PDF Url : ADA295701
Report Date : 04 APR 1995
Pagination or Media Count : 14
Abstract : 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)
Descriptors : *MATHEMATICAL MODELS, *CONVECTION(ATMOSPHERIC), *PLANETARY ATMOSPHERES, VELOCITY, SIMULATION, STOCHASTIC PROCESSES, TIME DEPENDENCE, BOUNDARY LAYER, TURBULENT FLOW, PROBABILITY DENSITY FUNCTIONS, PARTICLES, HEAT FLUX, DISPERSIONS, LAGRANGIAN FUNCTIONS, CUMULUS CLOUDS, CROSSWINDS.
Subject Categories : Atmospheric Physics
Distribution Statement : APPROVED FOR PUBLIC RELEASE