Study of MOVES Information for the National Emission Inventory: CRC Project A-84

The United States Environmental Protection Agency (EPA) compiles the National Emissions Inventory (NEI) to provide a comprehensive nation-wide estimate of annual air emissions of criteria and hazardous pollutants from all sectors. The NEI is developed on a three-year cycle, reporting annual emissions every third year; the analysis year for the current cycle is 2011. During the development cycle EPA works closely with state, local and tribal environmental agencies to compile emissions inventories for each county in the U.S., down to very detailed subsector levels. The resulting compilation provides the official U.S. emissions inventory and serves as the basis for numerous efforts including trends analysis, air quality planning, regulation development and health exposure analyses. The 2011 NEI is the first to rely solely on EPA’s Motor Vehicle Emission Simulator (MOVES) to estimate on-road emissions, replacing the MOBILE6 model used for the last several NEI versions (1999, 2002, 2005, and 2008). State/local/tribal air agencies were encouraged to submit county-level inputs for MOVES, to be used by EPA in developing the on-road inventory for their state. In conjunction with the switch to MOVES, EPA developed a standardized framework for agencies to submit MOVES input data culled from local sources, taking advantage of MOVES features to facilitate the processing and input of local data. As a result, local vehicle fleet and activity data were made available from 30 states, covering over 1,400 counties, representing one of the largest compilations of local MOVES data to date. Under contract with the Coordinating Research Council’s (CRC) Atmospheric Impacts Committee, Eastern Research Group, Inc. (ERG) analyzed the submitted MOVES input data, focusing on three questions: 1) How do the methods used to generate the submitted data compare to best practice? 2) What is the range of data submitted for MOVES inputs, and how does it compare to MOVES defaults? And 3) How large is the change in MOVES emission predictions based on the range of submitted data?

  • Record URL:
  • Corporate Authors:

    Eastern Research Group, Incorporated

    3508 Far West Blvd., Suite 210
    Austin, TX  United States  78731

    Coordinating Research Council, Incorporated

    3650 Mansell Road, Suite 140
    Alpharetta, GA  United States  30022
  • Authors:
    • Koupal, J
    • DeFries, T H
    • Palacios, C F
    • Fincher, S W
  • Publication Date: 2013-10-21


  • English

Media Info

  • Media Type: Digital/other
  • Edition: Final Report
  • Features: Appendices; Figures; Tables;
  • Pagination: 152p

Subject/Index Terms

Filing Info

  • Accession Number: 01518906
  • Record Type: Publication
  • Report/Paper Numbers: CRC Project A-84, ERG Project No.: 3881.00.001.001
  • Files: TRIS
  • Created Date: Feb 26 2014 10:28AM