{
  "accessLevel": "public",
  "bureauCode": [
    "020:00"
  ],
  "contactPoint": {
    "fn": "Melissa Puchalski",
    "hasEmail": "mailto:puchalski.melissa@epa.gov"
  },
  "describedBy": "https://pasteur.epa.gov/uploads/10.23719/1524284/documents/NHx%20QAPP%20052317%20Signed.pdf",
  "describedByType": "application/pdf",
  "description": "Dataset includes reduced nitrogen (NHx) concentrations that were collected at Duke Forest, NC and Gainesville, FL using a CSN MetOne SuperSASS and IMPROVE PM sampler from May - October 2017. Using an acid impregnated filter in the CSN and IMPROVE samplers, NHx concentrations were compared to URG annular denuder measurements. Results are summarized in a report: Improving characterization of reduced nitrogen at IMPROVE and CSN monitoring sites (https://www.epa.gov/system/files/documents/2021-11/nhx_summary-report_final.pdf). Citation information for this dataset can be found in the EDG's Metadata Reference Information section and Data.gov's References section.",
  "distribution": [
    {
      "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1524284/NHX_Final.xlsx",
      "mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
      "title": "NHX_Final.xlsx"
    },
    {
      "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1524284/NHX_Flags.csv",
      "mediaType": "application/vnd.ms-excel",
      "title": "NHX_Flags.csv"
    },
    {
      "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1524284/NHX_QC.xlsx",
      "mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
      "title": "NHX_QC.xlsx"
    },
    {
      "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1524284/NHx_Final_Metadata.xlsx",
      "mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
      "title": "NHx_Final_Metadata.xlsx"
    },
    {
      "downloadURL": "https://pasteur.epa.gov/uploads/10.23719/1524284/NHx_QC_Metadata.xlsx",
      "mediaType": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet",
      "title": "NHx_QC_Metadata.xlsx"
    }
  ],
  "identifier": "https://doi.org/10.23719/1524284",
  "keyword": [
    "Castnet",
    "IMPROVE",
    "ambient ammonia",
    "chemical speciation network",
    "reduced nitrogen"
  ],
  "license": "https://pasteur.epa.gov/license/sciencehub-license.html",
  "modified": "2018-10-23",
  "programCode": [
    "020:000"
  ],
  "publisher": {
    "name": "U.S. Environmental Protection Agency",
    "subOrganizationOf": {
      "name": "U.S. Government"
    }
  },
  "references": [
    "https://pasteur.epa.gov/uploads/10.23719/1524284/documents/NHx%20QAPP%20052317%20Signed.pdf",
    "https://www.epa.gov/system/files/documents/2021-11/nhx_summary-report_final.pdf"
  ],
  "rights": null,
  "title": "Chemical Speciation Network and IMPROVE Reduced Nitrogen Method Evaluation"
}