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Dr. William G. Benjey

My area of expertise at EPA is the improvement and analysis of air emission data components of urban and regional air quality modeling. The focus is on the modeling of emissions to the air, including methods to fill gaps in reported data and to better temporally, spatially, and chemically allocate annual emission data to the hourly gridded form needed for air quality models, particularly the Community Multiscale Air Quality (CMAQ) model. This has included service as project officer for the Sparse Matrix Operator Kernel Emission (SMOKE) model, which is an operational modeling system maintained and improved by the EPA Office of Air Quality Planning and Standards

More recent work includes ongoing research on the current and future (ca. 2050) spatial and temporal behavior of emissions as part of the EPA Climate Impact on Regional Air Quality (CIRAQ) program, and oversight of the development of other emission tools, such as the open software Spatial Allocator for gridding and reprojecting air quality data. I also participate on the OAQPS-led team for the Emission Modeling Framework (EMF), and on the joint Emission Modeling Team. I serve as Task Order Project Officer for AMAD’s primary modeling support contract, and as contract Project Officer on the Community Modeling and Analysis System (CMAS) Center. CMAS was established under a cooperative grant to the University of North Carolina (UNC) for the purpose of encouraging the modeling community to share in the support and further improvement of the CMAQ family of air quality modeling tools.
Bill Benjey

Biographical Information

Name: Bill Benjey
Title: Physical Scientist

Contact Info:

Atmospheric Modeling and Analysis Division
National Exposure Research Laboratory
Environmental Protection Agency
109 TW Alexander Drive
Rsearch Triangle Park, NC 27711

Phone: 919-541-0757
email: benjey.william@epa.gov


B.A. Physical Geography, University of Michigan, 1966
M.S. Climatology, University of Michigan, 1969
Ph.D. Microclimatology, University of Michigan, 1974

Professional Experience

Physical Scientist, Air-Surface Processes Modeling Branch (previously Modeling Systems Analysis Branch), Atmospheric Sciences Modeling Division, Air Resources Laboratory, NOAA, Research Triangle Park, NC, 1990 - Present

Oceanographer, Environmental Studies Section, Minerals Management Service, U.S. Department of the Interior, Anchorage, AK, 1982 - 1990

Physical Scientist, Environmental Monitoring Group, Office of the Federal Inspector for the Alaska Natural Gas Transportation System (absorbed by the Department of Energy), Irvine, CA, 1981 - 1982

Chief, Ohio Water Quality Planning Section, Water Division, Region 5, U.S. Environmental Protection Agency, Chicago, IL, 1981 - 1978

Environmental Specialist, Ohio Water Quality Planning Section, Water Division, Region 5, U.S. Environmental Protection Agency, Chicago, IL, 1975 - 1978

Research Specialist, Infrared Imagery Laboratory, Environmental Research Institute of Michigan (then Willow Run Laboratories), Ann Arbor, MI, 1974 - 1975


Publications and Presentations

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