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SPECIATE Version 4.4

SPECIATE Data Documentation Related Data
SPECIATE4 logo SPECIATE is the EPA’s repository of volatile organic gas and particulate matter (PM) speciation profiles of air pollution sources. Among the many uses of speciation data, these emission source profiles are used to: 1) create speciated emissions inventories for regional haze, PM, greenhouse gas (GHG), and photochemical air quality modeling; (2) estimate hazardous air pollutant (HAP) and toxic air pollutant (TAP) emissions from PM and organic gas primary emissions; (3) provide input to the Chemical Mass Balance (CMB) receptor model; and, (4) verify profiles derived from ambient measurements by multivariate receptor models (e.g., factor analysis and positive matrix factorization). The SPECIATE 4.4 replaces SPECIATE 4.3, SPECIATE 4.2, SPECIATE 4.0, and SPECIATE 3.2. It includes 5,728 profiles for PM, volatile organic gas, and other gases profiles.

For more information on SMOKE-ready data versions of these data and links to resources for modeling chemical mechanism, please go to the EMCH speciation page.

Contact Mike Kosusko for support or more information at kosusko.mike@epa.gov.


SPECIATE Data
  • Browse online - Browse SPECIATE 4.3 Database using Data Browser and Search Engine
  • SPECIATE 4.4 - February 2014 (ZIP 8MB). This is a zipped MS Access file.
  • SPECIATE 4.3 - September 2011 (ZIP 8MB). This is a zipped MS Access file.
  • SPECIATE 4.2 - November 2008 (ZIP 9MB). This is a zipped MS Access file.
  • SPECIATE 4.0 - December 2006. (ZIP 6MB). This is a zipped MS Access file.
  • SPECIATE 3.2 - November 2002. Previous program version and webpage.

  • Documentation
  • Atmospheric Pollution Research - The development and uses of EPA's SPECIATE database.

  • SPECIATE 4.4
  • SPECIATE 4.4 Speciation Database Development Documentation, Final Report, February 2014 (PDF 3.9M)

  • SPECIATE 4.3
  • Addendum to SPECIATE 4.2 Speciation Database Development Documentation

  • SPECIATE 4.2
  • SPECIATE 4.2 Speciation Database Development Documentation
  • SPECIATE presentation (Powerpoint show, 1.8MB)

  • SPECIATE 4.0
  • SPECIATE 4.0 Database Development Documentation, Final Report, December 2006 (PDF 3.5M)
  • Related Data
  • SMOKE-ready speciation profiles and cross-reference files are on the EMCH speciation page

  • Explanation of File Formats

    | Office of Air Quality Planning & Standards | Technology Transfer Network |
    | Clearinghouse for Inventories & Emissions Factors |


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