Mixing-Layer Analysis Routine and Transport/Diffusion Application Routine for EPAMS.

摘要

This report describes the development of two subelements of the U.S. Army Experimental Prototype Automatic Meteorological System (EPAMS). One of the subelements is a diagnostic routine (computer program) for the automatic calculation of the mixing depth, as well as the wind velocity and other meteorological parameters in the surface mixing layer, for a mesoscale calculation grid in complex terrain. The output from this routine is used with the second subelement--a transport/diffusion application routine--to calculate concentration/dosage fields produced by pollutant emissions from selected sources located within the calculation grid. A two-layer shallow-fluid numerical model is used in the diagnostic routine to calculate the mesoscale wind field. The concentration/dosage fields calculated by the transport/diffusion application routine are obtained by solving generalized dispersion models for both continuous and instantaneous sources. In addition to descriptions of the modeling techniques, calculation procedures and computer program operations, example solutions for several case studies at White Sands Missile Range are also presented. (Author)