15
Apr 2013
Complex air dispersion modeling projects may require large amounts of time to process. One way to reduce model runtimes is to reduce the number of receptors. A method by which some regulatory agencies allow modelers to reduce their receptors is through the use of significant receptors. To identify significant receptors, modelers must first complete a run using a large receptor grid. A concentration threshold is specified and receptors which exceed the threshold are extracted for further processing.
15
Dec 2012
The AERMOD model produces a series of messages which document fatal errors, warnings, and other information messages about a model run. A modeler who knows how to read and interpret the messages can quickly diagnose problems or analyze results.
15
May 2012
Estimating air quality impacts from haul roads has presented many challenges to air dispersion modelers over the years. From the lack of a true line source to high degrees of variability in emissions estimates, consistent guidance was minimal and confusion was high. Previous releases of AERMOD View sought to reduce some of that confusion by adding tools for modelers such as the Line Volume source. While the AERMOD and ISC models do not contain true line sources, the Line Volume source allowed modelers to easily create a series of volume sources along a path. This source type made it quick and easy to add large sets of volume sources thus reducing time and effort.
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