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Extending the Community Multiscale Air Quality (CMAQ) Modeling System to Hemispheric Scales

Published by U.S. EPA Office of Research and Development (ORD) | U.S. Environmental Protection Agency | Metadata Last Checked: August 02, 2025 | Last Modified: 2017-01-20
Hemispheric scale simulations with CMAQ and the Weather Research and Forecasting model are performed for multiple years. Model capabilities for a range of applications including episodic long-range pollutant transport, long-term trends in air pollution across the Northern Hemisphere, and air pollution-climate interactions are evaluated through detailed comparison with available surface, aloft, and remotely sensed observations. This dataset is associated with the following publication: Mathur, R., J. Xing, R. Gilliam, G. Sarwar, C. Hogrefe, J. Pleim, G. Pouliot, S. Roselle, T. Spero, D. Wong, and J. Young. Extending the Community Multiscale Air Quality (CMAQ) Modeling System to Hemispheric Scales: Overview of Process Considerations and Initial Applications. Atmospheric Chemistry and Physics. Copernicus Publications, Katlenburg-Lindau, GERMANY, 17: 12449-12474, (2017).

Resources

29 resources available

  • Data_Dictionary_HemisphericCMAQ_manuscript.docx

    APPLICATION/VND.OPENXMLFORMATS-OFFICEDOCUMENT.WORDPROCESSINGML.DOCUMENT
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  • Data_Dictionary_HemisphericCMAQ_manuscript_Final.docx

    APPLICATION/VND.OPENXMLFORMATS-OFFICEDOCUMENT.WORDPROCESSINGML.DOCUMENT
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  • Figure11_CASTNET_PV_STEInfluence_vs_BiasChange_seasonal_O3gt40ppb.txt

    TEXT/PLAIN
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  • Figure14_CMAQ_SCIAMACHY_GOME.xlsx

    APPLICATION/VND.OPENXMLFORMATS-OFFICEDOCUMENT.SPREADSHEETML.SHEET
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  • Figure15a_O3_dm8hr_JJA_avg_trend_obs_hemis_36km.txt

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  • Figure15b_SO2_SO4_JJA_trendcompare_CASTNET_hemis_36km.txt

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  • Figure16a_EChina_AOD_SWR_JJAmonthly.txt

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  • Figure16b_Europe_AOD_SWR_JJAmonthly.txt

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  • Figure16c_EUS_AOD_SWR_JJAmonthly.txt

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  • Figure1_tracer_netcdf.zip

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  • Figure2_FullLayerHt_ZF_35_44L.txt

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  • Figure3a_35_44L_zero_NA_TrinidadHead.txt

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  • Figure3b_35_44L_zero_NA_Boulder.txt

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  • Figure3c_35_44L_zero_NA_Huntsville.txt

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  • Figure3d_35_44L_zero_NA_Narragansett.txt

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  • Figure4a_o3sonde_march_mean_hemi_trinidad.txt

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  • Figure4b_o3sonde_august_mean_hemi_trinidad.txt

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  • Figure5a_428_dc8_model_obs_1s.txt

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  • Figure5b_501_dc8_model_obs_1s.txt

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  • Figure5c_509_dc8_model_obs_1s.txt

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  • Figure5d_512_dc8_model_obs_1s.txt

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  • Figure5e_dc8_modobs_mean_bins_417_501.txt

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  • Figure5f_dc8_modobs_mean_bins_501_515.txt

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  • Figure6c_421_c130_model_obs_so4_halogen_func.txt

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  • Figure7a_dc8_modobs_so4_halogen_func_mean_417_515.txt

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  • Figure7b_C130_modobs_so4_halogen_func_mean_421_515.txt

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  • Figure8_LAY1_CONC_netcdf.zip

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  • Figure9a_Bias_Diff_SE_states_jul29-aug3.xlsx

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  • Figure9b_FL_PM25_timeseries_compare.txt

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Complete Metadata
accessLevel public
bureauCode 
                                            [
  "020:00"
]
contactPoint 
                                            {
  "fn": "Rohit Mathur",
  "hasEmail": "mailto:mathur.rohit@epa.gov"
}
describedBy https://pasteur.epa.gov/uploads/10.23719/1378084/documents/Data_Dictionary_HemisphericCMAQ_manuscript.docx
describedByType application/vnd.openxmlformats-officedocument.wordprocessingml.document
description Hemispheric scale simulations with CMAQ and the Weather Research and Forecasting model are performed for multiple years. Model capabilities for a range of applications including episodic long-range pollutant transport, long-term trends in air pollution across the Northern Hemisphere, and air pollution-climate interactions are evaluated through detailed comparison with available surface, aloft, and remotely sensed observations. This dataset is associated with the following publication: Mathur, R., J. Xing, R. Gilliam, G. Sarwar, C. Hogrefe, J. Pleim, G. Pouliot, S. Roselle, T. Spero, D. Wong, and J. Young. Extending the Community Multiscale Air Quality (CMAQ) Modeling System to Hemispheric Scales: Overview of Process Considerations and Initial Applications. Atmospheric Chemistry and Physics. Copernicus Publications, Katlenburg-Lindau, GERMANY, 17: 12449-12474, (2017).
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    "title": "Figure11_CASTNET_PV_STEInfluence_vs_BiasChange_seasonal_O3gt40ppb.txt",
    "mediaType": "text/plain",
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    "title": "Figure15a_O3_dm8hr_JJA_avg_trend_obs_hemis_36km.txt",
    "mediaType": "text/plain",
    "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1378084/Figure15a_O3_dm8hr_JJA_avg_trend_obs_hemis_36km.txt"
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    "title": "Figure15b_SO2_SO4_JJA_trendcompare_CASTNET_hemis_36km.txt",
    "mediaType": "text/plain",
    "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1378084/Figure15b_SO2_SO4_JJA_trendcompare_CASTNET_hemis_36km.txt"
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    "title": "Figure16a_EChina_AOD_SWR_JJAmonthly.txt",
    "mediaType": "text/plain",
    "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1378084/Figure16a_EChina_AOD_SWR_JJAmonthly.txt"
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    "title": "Figure16b_Europe_AOD_SWR_JJAmonthly.txt",
    "mediaType": "text/plain",
    "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1378084/Figure16b_Europe_AOD_SWR_JJAmonthly.txt"
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    "title": "Figure16c_EUS_AOD_SWR_JJAmonthly.txt",
    "mediaType": "text/plain",
    "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1378084/Figure16c_EUS_AOD_SWR_JJAmonthly.txt"
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    "title": "Figure1_tracer_netcdf.zip",
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    "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1378084/Figure1_tracer_netcdf.zip"
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    "title": "Figure2_FullLayerHt_ZF_35_44L.txt",
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    "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1378084/Figure2_FullLayerHt_ZF_35_44L.txt"
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    "title": "Figure3a_35_44L_zero_NA_TrinidadHead.txt",
    "mediaType": "text/plain",
    "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1378084/Figure3a_35_44L_zero_NA_TrinidadHead.txt"
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    "title": "Figure3b_35_44L_zero_NA_Boulder.txt",
    "mediaType": "text/plain",
    "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1378084/Figure3b_35_44L_zero_NA_Boulder.txt"
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    "title": "Figure3c_35_44L_zero_NA_Huntsville.txt",
    "mediaType": "text/plain",
    "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1378084/Figure3c_35_44L_zero_NA_Huntsville.txt"
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    "title": "Figure3d_35_44L_zero_NA_Narragansett.txt",
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    "title": "Figure4a_o3sonde_march_mean_hemi_trinidad.txt",
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    "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1378084/Figure4a_o3sonde_march_mean_hemi_trinidad.txt"
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    "title": "Figure5e_dc8_modobs_mean_bins_417_501.txt",
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    "title": "Figure5f_dc8_modobs_mean_bins_501_515.txt",
    "mediaType": "text/plain",
    "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1378084/Figure5f_dc8_modobs_mean_bins_501_515.txt"
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  {
    "title": "Figure6c_421_c130_model_obs_so4_halogen_func.txt",
    "mediaType": "text/plain",
    "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1378084/Figure6c_421_c130_model_obs_so4_halogen_func.txt"
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  {
    "title": "Figure7a_dc8_modobs_so4_halogen_func_mean_417_515.txt",
    "mediaType": "text/plain",
    "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1378084/Figure7a_dc8_modobs_so4_halogen_func_mean_417_515.txt"
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  {
    "title": "Figure7b_C130_modobs_so4_halogen_func_mean_421_515.txt",
    "mediaType": "text/plain",
    "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1378084/Figure7b_C130_modobs_so4_halogen_func_mean_421_515.txt"
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  {
    "title": "Figure8_LAY1_CONC_netcdf.zip",
    "mediaType": "application/x-zip-compressed",
    "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1378084/Figure8_LAY1_CONC_netcdf.zip"
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    "title": "Figure9a_Bias_Diff_SE_states_jul29-aug3.xlsx",
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    "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1378084/Figure9a_Bias_Diff_SE_states_jul29-aug3.xlsx"
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  {
    "title": "Figure9b_FL_PM25_timeseries_compare.txt",
    "mediaType": "text/plain",
    "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1378084/Figure9b_FL_PM25_timeseries_compare.txt"
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]
identifier https://doi.org/10.23719/1378084
keyword 
                                            [
  "Hemispheric CMAQ",
  "WRF",
  "background pollution",
  "long-range transport"
]
license https://pasteur.epa.gov/license/sciencehub-license.html
modified 2017-01-20
programCode 
                                            [
  "020:094"
]
publisher 
                                            {
  "name": "U.S. EPA Office of Research and Development (ORD)",
  "subOrganizationOf": {
    "name": "U.S. Environmental Protection Agency",
    "subOrganizationOf": {
      "name": "U.S. Government"
    }
  }
}
references 
                                            [
  "https://doi.org/10.5194/acp-17-12449-2017"
]
rights 
                                            null
title Extending the Community Multiscale Air Quality (CMAQ) Modeling System to Hemispheric Scales

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