Energy Center

PU Oil Spill Response Lecture- Daewon W. Byun from Air Resources Laboratory, OAR, NOAA

November 8 @ 3:30 PM - 4:30 PM - Lilly Hall 2425

Daewon W. Byun from Air Resources Laboratory, OAR, NOAA will be giving a lecture titled, "National Air Quality Forecasting System and Investigation of Regional Air Quality Impact of the Deep Water Horizon Oil Spill."

Abstract

Air quality models help to expand our understanding of chemical and physical interactions of pollutants in the atmosphere and forecast the quality of the air we breathe. Air quality modeling is also used to evaluate the effectiveness of air pollution and emission control policies and regulations that influence energy management and agricultural practices to protect public health. The National Oceanographic and Atmospheric Administration (NOAA) operates the National Air Quality Forecast Capability (NAQFC) utilizing the National Centers for Environmental Prediction’s (NCEP’s) North American Mesoscale (NAM) model and the U.S. Environmental Protection Agency’s (EPA’s) Community Multiscale Air Quality (CMAQ) modeling system. Daily air quality forecasting is provided for the Conterminous US, Alaska, and Hawaii domains. The performance statistics of air quality forecasting and sensitivity simulation results suggesting causes of model biases will be presented in this talk. In addition, the preliminary simulation results of regional air quality impact of the Deep Water Horizon Gulf of Mexico oil spill will be discussed. Air quality concerns arise once the oil reaches the ocean surface.  Smokes from burning oil gathered on the surface of the water and evaporative emissions from oil spread over the ocean surface can affect air quality.  The amount of surface oil and emissions factors for controlled oil burning and evaporative hydrocarbon emissions are quite uncertain.   Evaporative emissions are approximated into the area source emissions of hydrocarbons utilizing the NOAA surface oil forecast.  The emission factors for crude oil burning over water are compiled by reanalyzing data from previous in-situ ocean oil burning measurements, EPA emission factor documents, and fossil fuel emission report.  The CMAQ simulation results will be compared with available observations to assess the impacts of the oil spill on regional air quality with specific focus on ozone, PM2.5 (particulate matter of aerodynamic diameter less than 2.5 micrometers) and benzene.

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