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CMAQ Model Version 5.5 CRACMM2 CAP-HAP Input Data – 12/01/2024 - 12/31/2025 12km CONUS (v1)

Published by U.S. Environmental Protection Agency | U.S. Environmental Protection Agency | Catalog Last Checked: August 03, 2026 at 12:52 AM | Dataset Last Updated: July 06, 2026
This dataset includes CMAQ input data for the CRACMM2 chemical mechanism for a 12/01/2024 - 12/31/2025 simulation over the Continental US. The files are consistent with CMAQv5.5 CRACMM2, but data can be used in CMAQv5.4 and later and all versions of CRACMM with appropriate adjustments. Data include emissions, meteorology, fertilizer information, lightning information, model initial chemical conditions, and surface information for the domain. This dataset continues the collection of years for which CRACMM inputs across the U.S. are publicly available (currently 2018, 2019, 2020, 2022, and 2023). This dataset can be cited as: US EPA, 2026, "CMAQ Model Version 5.5 CRACMM2 CAP-HAP Input Data – 12/01/2024 - 12/31/2025 12km CONUS", https://doi.org/10.15139/S3/JYXFZY, UNC Dataverse, V1.

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Complete Metadata
@type dcat:Dataset
accessLevel public
bureauCode 
[
  "020:00"
]
contactPoint 
{
  "fn": "Havala Pye",
  "hasEmail": "mailto:pye.havala@epa.gov"
}
description This dataset includes CMAQ input data for the CRACMM2 chemical mechanism for a 12/01/2024 - 12/31/2025 simulation over the Continental US. The files are consistent with CMAQv5.5 CRACMM2, but data can be used in CMAQv5.4 and later and all versions of CRACMM with appropriate adjustments. Data include emissions, meteorology, fertilizer information, lightning information, model initial chemical conditions, and surface information for the domain. This dataset continues the collection of years for which CRACMM inputs across the U.S. are publicly available (currently 2018, 2019, 2020, 2022, and 2023). This dataset can be cited as: US EPA, 2026, "CMAQ Model Version 5.5 CRACMM2 CAP-HAP Input Data – 12/01/2024 - 12/31/2025 12km CONUS", https://doi.org/10.15139/S3/JYXFZY, UNC Dataverse, V1.
distribution 
[
  {
    "title": "https://doi.org/10.15139/S3/JYXFZY",
    "accessURL": "https://doi.org/10.15139/S3/JYXFZY"
  },
  {
    "title": "https://doi.org/10.5281/zenodo.1079878",
    "accessURL": "https://doi.org/10.5281/zenodo.1079878"
  },
  {
    "title": "https://github.com/USEPA/CMAQ",
    "accessURL": "https://github.com/USEPA/CMAQ"
  },
  {
    "title": "2025cracmminputs_README.txt",
    "mediaType": "text/plain",
    "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/d-tg63/2025cracmminputs_README.txt"
  }
]
identifier https://doi.org/10.23719/d-tg63
keyword 
[
  "CMAQ",
  "CRACMM",
  "Meteorology",
  "Ozone",
  "emissions",
  "pm2.5"
]
license https://pasteur.epa.gov/license/sciencehub-license.html
modified 2026-07-06
programCode 
[
  "020:000"
]
publisher 
{
  "name": "U.S. Environmental Protection Agency",
  "subOrganizationOf": {
    "name": "U.S. Government"
  }
}
references 
null
rights 
null
title CMAQ Model Version 5.5 CRACMM2 CAP-HAP Input Data – 12/01/2024 - 12/31/2025 12km CONUS (v1)

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