Modeling PM10 regional transport from disking operations

J. Wang, T. W. Sammis, D. R. Miller, A. L. Hiscox, D. Granucci, B. Holmén, J. Kasumba, M. K. Shukla, S. O. Dennis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Particulate matter (PM) of aerodynamic diameter less than or equal to 10 microns, PM10, is regulated by the U.S. Environmental Protection Agency (EPA) as part of the National Ambient Air Quality Standards (NAAQS). PM10 emitted from agricultural field operations (e.g., disking, listing, leveling, planting, harvesting) can be dispersed downwind in the far-field (i.e., > 1 km). This paper reports on the calibration and evaluation of the Hysplit4 (Hybrid Single-Particle Lagrangian Integrated Trajectory) model to simulate regional dust dispersion from a disking operation. Disking operations in a cotton field at Las Cruces, NM, were conducted, and boundary layer PM 10 concentrations were sampled using a Dustrack™ sampler on an airplane flown at altitudes between 200 m and 550 m and downwind several kilometers. Based on the measured data, the model parameters of released particle number, grid size, and particle release height were calibrated. Using NAM 12km meteorological data with vertical profiles, the model is capable of reasonably simulating regional PMlO dispersion (the simulated data =1.04 8xmeasured data with R2=0.85) when the PM10 was released at ground level. However, using measured point meteorological data at ground level and when the simulated particles were released at ground level, the model error was 90%. The smaller simulated values may be caused by the model's inability to capture the surface layer micrometeorology that transports ground-level dusts to higher altitudes. When using ground measurements of meteorological data, different release heights (50, 100, 150, and 200 m) of the particles were tested, and at the release height of 200 m (top of surface layer), the model performance was the best - the error was 10%, and the R2 was 0.65.

Original languageEnglish (US)
Title of host publicationASABE - International Symposium on Air Quality and Waste Management for Agriculture 2010
Pages10-17
Number of pages8
StatePublished - Dec 1 2010
Externally publishedYes
EventInternational Symposium on Air Quality and Waste Management for Agriculture 2010 - Dallas, TX, United States
Duration: Sep 13 2010Sep 16 2010

Publication series

NameASABE - International Symposium on Air Quality and Waste Management for Agriculture 2010

Other

OtherInternational Symposium on Air Quality and Waste Management for Agriculture 2010
CountryUnited States
CityDallas, TX
Period9/13/109/16/10

Keywords

  • Air quality
  • Disking operation
  • Dynamic model
  • Hysplit4
  • PM10
  • Pollution

ASJC Scopus subject areas

  • Agricultural and Biological Sciences (miscellaneous)
  • Environmental Engineering
  • Pollution
  • Waste Management and Disposal

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