Author(s)

Thomas G. Grosch and Russell F. Lee

Abstract

AERMOD is a new, advanced plume dispersion model that the U.S. Environmental Protection Agency (EPA) is expected to propose for regulatory use. It is intended to replace ISCST3 for most modeling applications. AERMOD is the result of an effort to incorporate scientific knowledge gained over the last three decades into regulatory plume models. AERMOD requires, as input, three site-specific land use parameters. These are the Bowen ratio (a measure of moisture available for evaporation), the albedo (portion of sunlight that is reflected), and surface roughness length. These parameters are functions of ground cover (land use), and affect the concentration calculati

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