CT-EMFAC Modeling Tool: Estimating On-Road GHG, Air Toxics, and Criteria Pollutant Emissions

Submitted by bwest on Fri, 03/10/2023 - 17:46
CT-EMFAC Modeling Tool: Estimating On-Road GHG, Air Toxics, and Criteria Pollutant Emissions
Clients
California Department of Transportation (Caltrans)
University of California, Davis (U.C. Davis)
Sonoma Technology, in collaboration with faculty and researchers at U.C. Davis, developed an on-road motor vehicle emissions modeling tool that quantifies emissions of carbon dioxide (CO<sub>2</sub>), criteria pollutants, and mobile source air toxics (MSATs) that originate from transportation projects. The tool, called CT-EMFAC, allows users to pair emission factors from California's EMFAC motor vehicle emissions model with forecasted transportation activity (fleet mix, speed distribution, vehicle miles traveled). In addition, the tool incorporates MSAT speciation factors developed by the California Air Resources Board.
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The results of this work will
<ul>
<li>Allow, for the first time, project analysts to estimate CO<sub>2</sub>, criteria pollutant, and MSAT on-road emissions with a single tool</li>
<li>Give analysts a tool to evaluate how transportation emissions vary with travel speed, calendar year, geographic location, and fleet changes</li>
<li>Enable project analysts to easily pair activity data with emission factors to evaluate project impacts</li>
Air Quality
Climate
Emissions
Modeling
Policy and Planning
Software Development

Kenneth J. Craig

Submitted by rspencerdev on Thu, 06/16/2022 - 15:56
Kenneth J. Craig
Kenneth
J.
Craig
Manager, Atmospheric and Emissions Modeling Group / Principal Scientist
kcraig@sonomatech.com
/sites/default/files/2023-02/KJCres.pdf