Community Multiscale Air Quality (CMAQ) 2019 3D Gridded and Column data from the EPA's Air Quality Time Series (EQUATES) Project

Description

The data are part of EPA’s Air Quality Time Series (EQUATES) Project. The data consist of hourly gridded pollutant concentrations estimates by the Community Multiscale Air Quality (CMAQ) model version 5.3.2 (https://doi.org/10.15139/S3/F2KJSK) for January 1 – December 31, 2019. Model data is provided for two spatial domains : the Northern Hemisphere (108 km x 108km horizontal grid spacing) and the Contiguous United States including parts of Canada and Mexico (12km x 12km horizontal grid spacing). Two types of hourly data are provided: three-dimensional air pollutant concentrations and vertical column pollutant totals. Previous studies have used this type of CMAQ 3D and vertical column air quality data to evaluate the modeling system, created model-observed ‘fused’ surfaces, and to analyze spatial and temporal changes in air quality in the upper atmosphere, e.g., https://doi.org/10.1016/j.envint.2019.104909; https://doi.org/10.5194/acp-17-12449-2017; https://doi.org/10.1029/2006JD008085; https://doi.org/10.5194/acp-15-9997-2015.

Update Frequency

Annual

License

These datasets are products of the U.S. Government and are intended for public access and use. Unless otherwise specified, all data produced by the U.S EPA is, by default, in the public domain and are not subject to domestic copyright protection under 17 U.S.C. § 105. More details on the U.S. Public Domain license are available here: http://www.usa.gov/publicdomain/label/1.0/

Documentation

EQUATES data DOI: https://doi.org/10.15139/S3/F2KJSK. Please see the Data Use Statement if you plan to use this data for your own research. Additional information may be found on the EQUATES home page (www.epa.gov/cmaq/equates). For questions or issues please use this User Support Forum: https://forum.cmascenter.org/t/about-the-equates-category/2723

Managed By

U.S. Environmental Protection Agency, Office of Research and Development, Center for Environmental Measurement and Modeling, Atmospheric and Environmental Systems Modeling Division

See all datasets managed by U.S. Environmental Protection Agency, Office of Research and Development, Center for Environmental Measurement and Modeling, Atmospheric and Environmental Systems Modeling Division.

Contact

CMAQ_Team@epa.gov

How to Cite

Community Multiscale Air Quality (CMAQ) 2019 3D Gridded and Column data from the EPA's Air Quality Time Series (EQUATES) Project was accessed on DATE from https://registry.opendata.aws/epa-equates-v1. US EPA, 2021, "EQUATESv1.0: Emissions, WRF/MCIP, CMAQv5.3.2 Data -- 2002-2019 US_12km and NHEMI_108km", https://doi.org/10.15139/S3/F2KJSK, UNC Dataverse, V5