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Click on “Download PDF” for the PDF version or on the title for the HTML version. If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options. Time-Varying PM10 Emissions from Open-Lot Dairies and Cattle FeedyardsPublished by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.org Citation: International Symposium on Air Quality and Manure Management for Agriculture Conference Proceedings, 13-16 September 2010, Dallas, Texas 711P0510cd.(doi:10.13031/2013.32652)Authors: Brent W Auvermann, Jack Bush, Gary Marek, Kevin Heflin, Brad Wilhite, Sharon L. P Sakirkin Keywords: Feedyard, feedlot, open-lot dairy, fugitive emissions, PM10, dust, AERMOD, dispersion modeling, time-varying Typical PM emission-factor studies for dairies and feedyards have involved measuring ground-level concentration as close to the plume centerline as weather predictions permit, followed by dispersion modeling using a single-valued emission factor to match the 24-hour average concentration. Using AERMOD as our dispersion-modeling platform, we confirm that the 24-hour average emission factor cannot reproduce the hourly average concentrations throughout the day and vastly underpredicts the magnitude of the evening dust peak. Moreover, matching a single concentration measurement near the plume centerline is not as rigorous a dispersion-modeling test as attempting to match an entire transverse cross-section of the plume along the downwind boundary. (Download PDF) (Export to EndNotes)
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