Faculty
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- Graduate Programs
- Areas of Research
- Transportation - In-use motor vehicle emissions and their effect on air pollution
- Urban and Regional Smog - Source/receptor modeling of particles and gases; interbasin transport of air pollutants throughout the United States; dry deposition of acidic gases and particles
- Agricultural Emissions - Sources and generation mechanisms of PM10 fugitive dust
- Global Climate Change - Aerosol effects on radiation balance, spatial and temporal distribution of regional aerosols on continental scales
- Visibility Degradation - Visibility/particle relationships in the atmosphere
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Atmospheric aerosols, roadway impacts health; proposed and helped pass AB1870 (2006) adding an aerosol component to Smog Check II
- Transportation - Aerosol emissions, cars, trucks and trains
- Urban and Regional Smog - Lake Tahoe studies, aerosol impact on visibility and lake clarity, 1972 – present;
- Indoor Air Quality - Indoor ultra fine aerosols at schools near roadways as volunteer with Breathe California of Sacramento-Emigrant Trails
- Visibility Degradation - Aerosols and visibility, national parks and wilderness areas, IMPROVE PI, 1988-1997
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Particle sampling and characterization for in vitro and in vivo exposure studies.
- Transportation - Characterization of particles emitted from transportation sources including aircraft, automotive, and railway.
- Urban and Regional Smog - Sampling and analysis of ambient particulate in support of source apportionment studies and atmospheric pollution transport.
- Agricultural Emissions - Particle emission measurement from agricultural sources including dairies and other Confined Animal Facility Operations (CAFO) sites.
- Global Climate Change - Quantification of long-range particle transport and transformation. Ground-truth observations for climate model calibration related to long-range dust transport.
- Indoor Air Quality - Quality assurance of air sampling protocols, particle and gaseous sampling and analysis of indoor pollutants related to human health impacts.
- Visibility Degradation - Ambient sampling and analysis of particles in Class 1 visual areas including National Parks and Monuments. Study of particle pollution source and concentration related to visibility reduction in US National Parks.
- Graduate Programs
- Areas of Research
- Transportation - Transportation-related air pollution, including toxics, particulate matter, carbon monoxide, conformity, transportation control measures, inspection and maintenance, near-road hot-spots, and construction emissions.
- Urban and Regional Smog - State implementation planning (SIP) including control policy assessment, emissions inventories, outreach and training.
- Global Climate Change - Effectiveness of transportation-based controls, relationship between climate change controls and regional planning.
- Graduate Programs
- Areas of Research
- Transportation - Coastal ship traffic emissions.
- Urban and Regional Smog - Coastal air quality measurements.
- Agricultural Emissions - Forest air quality studies: oxidation of biogenic hydrocarbon emissions.
- Global Climate Change - Global sulfur oxidation studies.
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Children’s Environmental Health, exposure to heavy metals, especially Hg and Pb.
- Transportation - Elemental composition of fuels, lubricants and aerosols. Organic composition of compounds in exhaust
- Urban and Regional Smog - Sources of ozone pre-cursors and reactivity of emissions
- Agricultural Emissions - Sources of ozone pre-cursors and reactivity of emissions
- Graduate Programs
- Areas of Research
- Transportation - Environmental impacts of bioenergy including biofuels.
- Agricultural Emissions - Emission factors from agricultural burning; emission simulators for human exposure experiments.
- Global Climate Change - Greenhouse gas emissions from biomass power systems, biofuel production, and energy-integrated waste management.
- Graduate Programs
- Areas of Research
- Transportation - Transportation planning and emissions analyses
- Urban and Regional Smog - Applying a spatial economic model to all of California that represents travel (passenger and freight) and land development, providing on-road emissions, emissions from buildings, and greenhouse gases for both.
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Effect of combustion-generated aerosols on inflammation.
- Transportation - Soot formation in engines.
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Environmental effects in asthma and COPD
- Transportation - Particulate matter exposure in mouse models of airway inflammation
- Urban and Regional Smog - Ozone effects in mouse models of asthma, and human asthma
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Characterization and source apportionment of airborne particles in fine and ultrafine size fractions.
- Transportation - Measurement of particle size and composition in tailpipe emissions.
- Urban and Regional Smog - Source-oriented airshed modeling for California and the eastern U.S.
- Agricultural Emissions - Ozone formation potential of agricultural emissions sources including dairy cows.
- Global Climate Change - Impact of climate change on air pollution including feedbacks on local meteorology.
- Visibility Degradation - Source contributions to visibility reduction in California.
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Quantifying the effects of air quality on health.
- Transportation - Air pollution and climate change implications of transportation
- Urban and Regional Smog - Trends in ozone smog and effects of regulation and climate change on ozone smog.
- Agricultural Emissions - Effects of regulation on agricultural emissions.
- Global Climate Change - Economics of global climate change; effects of climate change on air quality.
- Graduate Programs
- Areas of Research
- Transportation - Mobile source emissions inventories.
- Global Climate Change - Transportation-land use and energy consumption; Transportation-land use and impacts on mobile source inventories.
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Thermoregulation and thermal comfort of biota.
- Transportation - Turbulent transport of trace gases and particulates; modeling and measurements
- Urban and Regional Smog - Turbulent transport of trace gases and particulates; regional and smaller scale modeling and measurements.
- Agricultural Emissions - Aerosol physics; entrainment and deposition of aerosols.
- Global Climate Change - Turbulent transport of trace gases and particulates; carbon dioxide and other trace gas exchange from ecosystems; regional and smaller scale modeling and measurements.
- Indoor Air Quality - Fiber aerosol concentrations; bioaerosol concentrations (indoor).
- Graduate Programs
- Areas of Research
- Transportation - Vehicle emissions, alternative fuels, policy analysis.
- Agricultural Emissions - Climate policy.
- Global Climate Change - Analysis of transportation emissions, evaluation of policy instruments.
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Particle deposition in airways, how this deposition affects airway development in children, and the particle toxicity.
- Transportation - Dynamics of particles emitted from vehicles and near roadways.
- Urban and Regional Smog - Mathematical modeling of particle dynamics in the urban and regional atmosphere and new instruments for measuring particle properties.
- Global Climate Change - New particle formation in the atmosphere, aerosol-cloud interactions and turbulent coagulation of cloud droplets and crystals.
- Graduate Programs
- Areas of Research
- Air Pollution and Health - Exposure assessment, and the effects of measurement error on epidemiological analysis.
- Transportation - Evaluation of potential chemical signatures for emissions.
- Urban and Regional Smog - Characterization of atmospheric transport and transformation; attribution of particulate matter to sources; characterization of measurement quality.
- Global Climate Change - Radiative effects and remote sensing of particles.
- Graduate Programs
- Areas of Research
- Transportation - Coupled impacts of transportation infrastructure and activities on air and water quality.
- Agricultural Emissions - Pesticide impacts on water and air quality.