VALMET-A valley air pollution model

Abstract

Energy 1 s Paclfi c Northwest Laboratory for the u.s. Environmental Protection Agency. The GRAMA Program has, as its ultimate goal, the development of validated air quality models that can be applied to the complex terrain of the Green River Formation of western Colorado, eastern Utah and southern Wyoming. The Green River Formation is a geological formation containing large reserves of oil shale, coal and other natural resources. Development of these resources may lead to a degradation of the air quality of the region. Air quality models are needed immediately for planning and regulatory purposes to assess the magnitude of these regional impacts. This report documents one of the models being developed for this purpose within GRAMA-specifically a model developed to predict worst case air pollutant concentrations due to elevated continuous point sources of pollution located in deep valley terrain. Model testing. evaluation. and revision are planned prior to completion of the final project report and user 1 s guides in the spring of 1985.

Predicting and Measuring Drift of Bacillus Thuringiensis Sprays

“…These data suggest the need for further work on the connection of the AGDISP Lagrangian code to the FSCBG Gaussian code. There is also need to evaluate the VALMET model (VALley METeorology) [24] with this data set. We believe this study was an important first step in understanding airborne fate of Bt in mountain terrain and that the FSCBG model has application to studying and predicting dispersion of biopesticide sprays.…”

Effects of valley meteorology on forest pesticide spraying

“…From this hypothesis a thermodynamic model of temperature inversion destruction has been developed (Whiteman and McKee 1982). This thermodynamic model forms the basis for parameterizations of inversion breakup in a valley air pollution model called VALMET (Whiteman and Allwine 1985).…”

“…Digital topography models and solar shading algorithms could be developed to aid in this determination. Inversion breakup models and some simple air pollution dispersion models McKee 1982, Whiteman andAllwine 1985) could be modified tor support of forest spraying campaigns. Finally, some promising models of boundary layer growth on slopes have been formulated in the last several years that could be applied to the forest spraying problem.…”

Green River air quality model development: meteorological and tracer data, July/August 1982 field study in Brush Valley, Colorado

“…Hdrlan P. Foote of PNL digitized Rrush Valley topographic data to produce Figure 5 in the oil shale region of northwestern Colorado. This report presents the resulting data, which were collected to evaluate the initial version of an atmospheric transport and diffusion model called VALMET [1], developed for individual valleys. The VALMET model was developed for the EPA at the u.s.…”