{
  "@type": "dcat:Dataset",
  "accessLevel": "public",
  "bureauCode": [
    "026:00"
  ],
  "contactPoint": {
    "@type": "vcard:Contact",
    "fn": "Earthdata Forum",
    "hasEmail": "mailto:earthdata-support@nasa.gov"
  },
  "description": "The \"HIRDLS/Aura Level 3 Dinitrogen Pentoxide (N2O5) Zonal Fourier Coefficients\" version 7 data product (H3ZFCN2O) contains the entire mission (~3 years) of HIRDLS data expressed as zonal Fourier coefficients in 1 degree latitude bands from -64 to 80 degrees at 121 pressure levels. The coefficients are computed from the HIRDLS Level 2 profiles with a Kalman filter approach using both forward and backward passes in time. Expressed as the mean and up to 7 sine and cosine coefficients (4 waves for ascending and descending, 7 waves for combined), these coefficients may be used to compute values at any longitude. The data are provided on a pressure grid with 24 levels per decade, corresponding to about 1 km vertical resolution. The useful vertical range of the data is 82.5 to 1.0 hPa. The precision values are given by the root-mean square of the differences between the estimated fields and the input data.\n\nThe data are stored in the version 5 Hierarchical Data Format for the Earth Observing System (HDF-EOS5), which is an extension of the HDF5 format. Each file contains a zonal object with data for the entire mission with separate data fields for ascending (daytime), descending (nighttime), and combined orbit node.",
  "distribution": [
    {
      "@type": "dcat:Distribution",
      "conformsTo": "http://www.isotc211.org/2005/gmi",
      "description": "The metadata's original source.",
      "downloadURL": "https://cmr.earthdata.nasa.gov/search/concepts/C1251100988-GES_DISC.iso19115",
      "format": "ISO",
      "mediaType": "text/xml",
      "title": "Original Metadata"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://acdisc.gesdisc.eosdis.nasa.gov/data/Aura_HIRDLS_Level3/H3ZFCN2O5.007/",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://acdisc.gesdisc.eosdis.nasa.gov/opendap/HDF-EOS5/Aura_HIRDLS_Level3/H3ZFCN2O5.007/HIRDLS-Aura_L3ZFCN2O5_v07-00-20-c01_2005d022-2008d077.he5.html",
      "format": "HTML",
      "mediaType": "text/html"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://disc.gsfc.nasa.gov/datacollection/H3ZFCN2O5_007.html",
      "format": "HTML",
      "mediaType": "text/html"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://docserver.gesdisc.eosdis.nasa.gov/public/project/Images/H3ZFCN2O5_007.png",
      "format": "PNG",
      "mediaType": "image/png"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://docserver.gesdisc.eosdis.nasa.gov/repository/Mission/HIRDLS/3.3_Product_Documentation/3.3.5_Product_Quality/HIRDLS-DQD_V7.pdf",
      "format": "PDF",
      "mediaType": "application/pdf"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://docserver.gesdisc.eosdis.nasa.gov/repository/Mission/HIRDLS/3.3_Product_Documentation/3.3.6_Product_Application/All_HIRDLS_Papers_26June2013.pdf",
      "format": "PDF",
      "mediaType": "application/pdf"
    },
    {
      "@type": "dcat:Distribution",
      "downloadURL": "https://search.earthdata.nasa.gov/search/granules?p=C1251100988-GES_DISC",
      "format": "BIN",
      "mediaType": "application/octet-stream"
    }
  ],
  "identifier": "10.5067/Aura/HIRDLS/DATA310",
  "keyword": [
    "earth-science-atmospheric-chemistry-atmosphere-nitrogen-compounds"
  ],
  "license": "https://www.usa.gov/government-works",
  "modified": "2026-09-08",
  "programCode": [
    "026:000"
  ],
  "publisher": {
    "@type": "org:Organization",
    "name": "NASA/GSFC/SED/ESD/TISL/GESDISC"
  },
  "spatial": "[\"CARTESIAN\", [{\"WestBoundingCoordinate\": -180, \"NorthBoundingCoordinate\": 80, \"EastBoundingCoordinate\": 180, \"SouthBoundingCoordinate\": -64}]]",
  "temporal": "2005-01-22/2008-03-17",
  "theme": [
    "Earth Science"
  ],
  "title": "HIRDLS/Aura Level 3 Dinitrogen Pentoxide (N2O5) 1deg Lat Zonal Fourier Coefficients V007 (H3ZFCN2O5)"
}