Articles | Volume 23, issue 9
https://doi.org/10.5194/acp-23-5043-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/acp-23-5043-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
04 May 2023
Research article |
| 04 May 2023
| 04 May 2023
Linking gas, particulate, and toxic endpoints to air emissions in the Community Regional Atmospheric Chemistry Multiphase Mechanism (CRACMM)
Office of Research and Development, U.S. Environmental Protection
Agency, Research Triangle Park, North Carolina, USA
Bryan K. Place
Oak Ridge Institute for Science and Engineering (ORISE), Office of Research and Development, U.S. Environmental
Protection Agency, Research Triangle Park, North Carolina, USA
Benjamin N. Murphy
Office of Research and Development, U.S. Environmental Protection
Agency, Research Triangle Park, North Carolina, USA
Karl M. Seltzer
Oak Ridge Institute for Science and Engineering (ORISE), Office of Research and Development, U.S. Environmental
Protection Agency, Research Triangle Park, North Carolina, USA
Office of Air and Radiation, U.S. Environmental Protection Agency,
Research Triangle Park, North Carolina, USA
Emma L. D'Ambro
Office of Research and Development, U.S. Environmental Protection
Agency, Research Triangle Park, North Carolina, USA
Christine Allen
General Dynamics Information Technology, Research Triangle Park, North Carolina, USA
Ivan R. Piletic
Office of Research and Development, U.S. Environmental Protection
Agency, Research Triangle Park, North Carolina, USA
Sara Farrell
Oak Ridge Institute for Science and Engineering (ORISE), Office of Research and Development, U.S. Environmental
Protection Agency, Research Triangle Park, North Carolina, USA
Rebecca H. Schwantes
Chemical Sciences Laboratory, National Oceanic and Atmospheric Administration, Boulder, Colorado, USA
Matthew M. Coggon
Chemical Sciences Laboratory, National Oceanic and Atmospheric Administration, Boulder, Colorado, USA
Emily Saunders
Office of Chemical Safety and Pollution Prevention, U.S. Environmental
Protection Agency, Washington, DC, USA
Chemical Sciences Laboratory, National Oceanic and Atmospheric Administration, Boulder, Colorado, USA
Cooperative Institute for Research in Environmental Science (CIRES), University of Colorado Boulder, Boulder, Colorado, USA
Golam Sarwar
Office of Research and Development, U.S. Environmental Protection
Agency, Research Triangle Park, North Carolina, USA
William T. Hutzell
Office of Research and Development, U.S. Environmental Protection
Agency, Research Triangle Park, North Carolina, USA
Kristen M. Foley
Office of Research and Development, U.S. Environmental Protection
Agency, Research Triangle Park, North Carolina, USA
George Pouliot
Office of Research and Development, U.S. Environmental Protection
Agency, Research Triangle Park, North Carolina, USA
Jesse Bash
Office of Research and Development, U.S. Environmental Protection
Agency, Research Triangle Park, North Carolina, USA
William R. Stockwell
Department of Physics, University of Texas at El Paso, El Paso, Texas, USA
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Latest update: 29 Nov 2025
Short summary
Chemical mechanisms describe how emissions from vehicles, vegetation, and other sources are chemically transformed in the atmosphere to secondary products including criteria and hazardous air pollutants. The Community Regional Atmospheric Chemistry Multiphase Mechanism integrates gas-phase radical chemistry with pathways to fine-particle mass. New species were implemented, resulting in a bottom-up representation of organic aerosol, which is required for accurate source attribution of pollutants.
Chemical mechanisms describe how emissions from vehicles, vegetation, and other sources are...
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