The dust emissions characterization and mitigation group of scientists in the Division of Atmospheric Sciences (DAS) (J.A. Gillies, V. Etyemezian, J.P. Engelbrecht, H. Moosmuller, others) specialize in understanding the physics of mineral dust emissions from natural and anthropogenic sources, its transport and deposition. Our scientists are recognized as global leaders in this field of study winning awards for their research from the U.S. Department of Defense and Army Corp of Engineers, U.S. EPA, and U.S. Department of Energy. In addition, our team is actively engaged in designing methods to control dust emissions as well as developing measurement methods to evaluate the effectiveness of these controls. We can also evaluate the effectiveness of dust control methods developed by commercial ventures.
Within DAS we maintain a wide suite of instrumentation to measure dust emissions and dust emission potential from both natural and disturbed surfaces by wind erosion (Flux Towers, using U.S. EPA OTM 32; Portable In Situ Wind Erosion Lab [PI-SWERL]), and from paved, unpaved, and off-road surfaces by vehicles (TRAKER II and III, using U.S. EPA OTM 34). We also maintain resources to characterize the particle size distribution and chemical and optical properties of dust, which are important for estimating the effects of dust on human health and radiative transfer in the atmosphere.
- Tower-based monitoring of meteorological variables and dust flux
- Ambient PM measurements
- PM emission measurements from human activities
- PM emissions from paved and unpaved roads and road shoulders
- Designing dust control strategies
- Characterizing the mineralogical, chemical and optical properties of ambient dust and supplied bulk samples
- Mineral dust analysis by X-ray diffraction (XRD) (http://www.dri.edu/das-laboratories/1770-x-ray-diffraction-analysis-of-mineral-dusts-in-aerosols), optical microscopy, and electron (SEM) based individual particle analysis.
- Dust re-suspensions and measurement in the DRI’s dust entrainment facility (http://www.dri.edu/das-laboratories/4185-dust-entrainment-and-characterization-facility)
- Characterize effectiveness of dust control strategies and dust control products
- Our group has provided services to a diverse clientele including
- Federal Government Agencies
- State Government Agencies
- County Government Agencies
- U.S. Military Bases
- Private Industry
Dr. Jack Gillies, Research Professor, Division of Atmospheric Sciences
Dr. Vic Etyemezian, Research Professor, Division of Atmospheric Sciences
Dr. Johan Engelbrecht, Research Professor, Division of Atmospheric Sciences