Gradient

Senior Scientists

Nicole L. Briggs, Ph.D.
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Education

Ph.D., Atmospheric Sciences, University of Washington

B.A., Geography, University of Washington

Expertise

  • Exposure Assessment
  • Air Dispersion Modeling
  • Air Quality Monitoring
  • Sources, Sinks, and Transport of Air Pollutants
  • Climate Science

Nicole L. Briggs, Ph.D.

Senior Air Quality Scientist

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Dr. Briggs is an atmospheric scientist with expertise in air quality measurements and modeling, climate science, and pollutant fate and transport.  She focuses on evaluating air quality, climate, and meteorological data; modeling pollutant dispersion in ambient and indoor air; and characterizing exposure from modeled and monitored pollutant concentrations.  She has applied these skills to evaluate air quality resulting from facility stack emissions, storage piles, mobile sources, and fugitive emissions, and from indoor workplace exposures.  Her doctoral research focused on the impacts of wildfires and long-range transport to surface air pollutant concentrations.  She previously worked as an environmental consultant, focusing on US air permitting regulations and the electronic exchange of environmental data.

Education

Ph.D., Atmospheric Sciences, University of Washington

B.A., Geography, University of Washington

Expertise

  • Exposure Assessment
  • Air Dispersion Modeling
  • Air Quality Monitoring
  • Sources, Sinks, and Transport of Air Pollutants
  • Climate Science

Services

Representative Projects

Evaluation of Community Air Quality Concerns:  As part of an evaluation to respond to community concerns regarding coal dust from a facility, modeled coal dust dispersion to support a metals risk assessment, and evaluated particulate matter and meteorological measurements collected on-site.

Indoor Workplace Exposure:  Developed a two-box air model to evaluate worker exposures in indoor, low-ventilation spaces.

CFD Modeling:  Performed Computational Fluid Dynamics (CFD) modeling of airborne refrigerant dispersion due to accidental releases.

Well Pad Air Quality Impacts: Statistically evaluated volatile organic compound (VOC), particulate matter, and meteorological measurements collected near a well pad to assess the contribution of well pad emissions to measured air pollutant concentrations.

Surface Impoundment Closure Assessment:  Developed and applied a framework for assessing air quality impacts from coal ash surface impoundment closure options, including modeling PM2.5 and PM10 concentrations resulting from fugitive dust and mobile source emissions using the AMS/ EPA Regulatory Model (AERMOD) and Motor Vehicle Emission Simulator (MOVES2014a).

HAP Assessment: Modeled n-propyl-bromide (1-bromopropane) exposures and associated health risks using the Human Exposure Model (HEM-3).

Multi-Pollutant Exposure Assessment: As part of an assessment of human health risk, modeled manganese, arsenic, cadmium, hexavalent chromium (Cr6), 2-methylnaphthalene, and fluoranthene air concentrations using the AERMOD model.

Meteorological Assessment:  Evaluated patterns in wind direction and speed as part of an assessment of health impacts from a proposed composting facility abutting a neighborhood.

Propane Exposure Assessment:  Modeled propane vented during routine operations at a storage facility, and the associated ethyl mercaptan, which is used as an odorant to support an evaluation of human health impacts.

Selected Publications

Briggs, NL; Long, CM.  2016. "Critical review of black carbon and elemental carbon source apportionment in Europe and the United States." Atmos. Environ. 144 : 409-427.

Briggs, NL; Jaffe, NL; Gao, H; Hee, JR; Baylon, PM; Zhang, Q; Zhou, S; Collier, SC; Sampson, PD; Cary, RA.  2016. "Particulate matter, ozone, and nitrogen species in aged wildfire plumes observed at the Mount Bachelor Observatory, a high elevation site in the Pacific Northwest." Aerosol Air Qual. Res.

Briggs, N.  2015. "Framework for Evaluating the Relative Impacts of Surface Impoundment Closure Options." Presented to the Pacific Northwest International Section of the Air & Waste Management Association, 19p.

Jaffe, DA; Wigder, NL; Downey, N; Pfister, G; Boynard, A; Reid, SB.  2013. "Impact of wildfires on ozone exceptional events in the Western U.S." Environ. Sci. Technol. 47 : 11065-11072.

Jaffe, DA; Wigder, NL.  2012. "Ozone production from wildfires: A critical review." Atmos. Environ. 51 : 1-10.

See All Nicole Briggs Publications