SPECIATE is the EPA's repository of total organic
compound (TOC) and particulate matter (PM) speciation profiles of air pollution sources.
Among the many uses of speciation data, these source profiles are used to: 1) create speciated
emissions inventories for regional haze, particulate matter (PM2.5), and ozone (O3) air quality
modeling; 2) estimate hazardous and toxic air pollutant emissions from total PM and TOC
primary emissions; 3) provide input to chemical mass balance (CMB) receptor models; and, 4)
verify profiles derived from ambient measurements using multivariate receptor models (e.g.,
factor analysis and positive matrix factorization). The SPECIATE4.2 replaces SPECIATE 4.0 and SPECIATE3.2. It includes 5,187 profiles for PM2.5, total organic gases (TOG), 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. |
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