{
  "Spase": {
    "xmlns": "http://www.spase-group.org/data/schema",
    "xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance",
    "xsi:schemaLocation": "https://www.spase-group.org/data/schema  https://spase-group.org/data/schema/spase-2.7.2.xsd",
    "Version": "2.7.2",
    "MetadataRightsList": {
      "Rights": {
        "SchemeURI": "https://spdx.org/licenses/",
        "RightsIdentifierScheme": "SPDX",
        "RightsIdentifier": "CC0-1.0",
        "RightsURI": "https://spdx.org/licenses/CC0-1.0.html",
        "RightsName": "Creative Commons Zero v1.0 Universal",
        "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available SPASE metadata descriptions"
      }
    },
    "NumericalData": {
      "ResourceID": "spase://SMWG/NumericalData/ICON/EUV/L3/Climatology-Night-Oplus/P10D",
      "NamingAuthority": "NASA",
      "ResourceType": "NumericalData",
      "ResourceHeader": {
        "ResourceName": "ICON Extreme Ultraviolet Night Time Oplus Images ",
        "AlternateName": "EUV Nighttime Oplus Images",
        "ReleaseDate": "2026-08-05T00:00:00Z",
        "RevisionHistory": {
          "RevisionEvent": {
            "ReleaseDate": "2026-08-05T00:00:00Z",
            "Note": "First release. JMW."
          }
        },
        "Description": "ICON Night time Oplus climatology. The L3 FUV Night Limb files are produced from the L2.5 ICON FUV Night files.\n     All variables within the file are described in their Var_notes attribute. The data are identified in one of 2 var_types: data – which\n     contains the primary data product and support data – which contains parameters used in the retrieval such as geometry etc. that may also\n     be useful in any analysis of this data.  This single file spans the whole mission",
        "Acknowledgement": "National Aeronautics and Space Administration; Dr. Farzad Kamalabadi; Dr. Thomas J. Immel",
        "PublicationInfo": {
          "Authors": "Edelstein, J.",
          "PublicationDate": "2026-06-16T00:00:00",
          "PublishedBy": "Space Physics Data Facility"
        },
        "Funding": [
          {
            "Agency": "National Aeronautics and Space Administration",
            "Project": "Explorers Program",
            "AwardNumber": "NNG12FA44C"
          },
          {
            "Agency": "National Aeronautics and Space Administration",
            "Project": "Explorers Program",
            "AwardNumber": "contracts NNG12FA42I"
          }
        ],
        "Contact": [
          {
            "PersonID": "spase://SMWG/Person/Farzad.Kamalabadi",
            "Role": "PrincipalInvestigator"
          },
          {
            "PersonID": "spase://SMWG/Person/James.M.Weygand",
            "Role": "MetadataContact"
          }
        ],
        "InformationURL": [
          {
            "Name": "Additional information on ICON",
            "URL": "https://icon.ssl.berkeley.edu/",
            "Description": "ICON spacecraft Homepage."
          },
          {
            "Name": "Design and Performance of the ICON EUV Spectrograph",
            "URL": "https://doi.org/10.1007/s11214-017-0384-2",
            "Description": "Space Science Reviews, 212(1-2), pp.631-643. DOI: 10.1007/s11214-017-0384-2"
          }
        ]
      },
      "AccessInformation": [
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb",
          "Availability": "Online",
          "AccessRights": "Open",
          "RightsList": {
            "Rights": {
              "SchemeURI": "https://spdx.org/licenses/",
              "RightsIdentifierScheme": "SPDX",
              "RightsIdentifier": "CC0-1.0",
              "RightsURI": "https://spdx.org/licenses/CC0-1.0.html",
              "RightsName": "Creative Commons Zero v1.0 Universal",
              "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products"
            }
          },
          "AccessURL": {
            "Name": "CDAWeb HAPI Server",
            "URL": "https://cdaweb.gsfc.nasa.gov/hapi",
            "Style": "HAPI",
            "ProductKey": "ICON_L3-3_Climatology-Night-Oplus",
            "Description": "Web Service to this product using the HAPI interface."
          },
          "Format": "NetCDF",
          "Acknowledgement": "National Aeronautics and Space Administration; Dr. Roderick A. Heelis; Dr. Thomas Immel."
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb",
          "Availability": "Online",
          "AccessRights": "Open",
          "RightsList": {
            "Rights": {
              "SchemeURI": "https://spdx.org/licenses/",
              "RightsIdentifierScheme": "SPDX",
              "RightsIdentifier": "CC0-1.0",
              "RightsURI": "https://spdx.org/licenses/CC0-1.0.html",
              "RightsName": "Creative Commons Zero v1.0 Universal",
              "Note": "CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products"
            }
          },
          "AccessURL": [
            {
              "Name": "HTTPS from SPDF",
              "URL": "https://spdf.gsfc.nasa.gov/pub/data/icon/l3/climatology/",
              "ProductKey": "ICON_L3-3_Climatology-Night-Oplus",
              "Description": "Access to Data in NetCDF Format via https from SPDF"
            },
            {
              "Name": "CDAWeb",
              "URL": "https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=ICON_L3-3_Climatology-Daytime-Oplus&index=sp_phys",
              "ProductKey": "ICON_L3-3_Climatology-Night-Oplus",
              "Description": "Access to ASCII, NetCDF, CDF, and Plots via NASA/GSFC CDAWeb"
            }
          ],
          "Format": "NetCDF",
          "Encoding": "None",
          "Acknowledgement": "National Aeronautics and Space Administration; Dr. Roderick A. Heelis; Dr. Thomas Immel."
        }
      ],
      "ProcessingLevel": "Calibrated",
      "ProviderName": "ICON EUV team",
      "ProviderResourceName": "",
      "InstrumentID": "spase://SMWG/Instrument/ICON/EUV",
      "MeasurementType": "ImageIntensity",
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "2019-12-09T19:01:48Z",
          "StopDate": "2022-11-03T23:27:18Z"
        },
        "Cadence": "PT1800S"
      },
      "ObservedRegion": [
        "Earth.NearSurface.Atmosphere",
        "Earth.NearSurface.Ionosphere"
      ],
      "Parameter": [
        {
          "Name": "Epoch Time",
          "ParameterKey": "Epoch",
          "Description": "Time corresponding to the middle of each 48 day average, in milliseconds since Jan 1 1970.",
          "Cadence": "P10D",
          "Units": "ms",
          "ValidMin": "0",
          "ValidMax": "6000000000000",
          "FillValue": "-999",
          "Support": {
            "Qualifier": "Magnitude",
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "48 day bins",
          "ParameterKey": "ICON_L33_Included_Dates",
          "Description": "Dates used in each 48 day bin, in string format, in the format: 2017-05-27.",
          "Cadence": "P10D",
          "FillValue": "-999",
          "Support": {
            "Qualifier": "Magnitude",
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Binned O+ Density",
          "ParameterKey": "ICON_L33_OPlus",
          "Description": "Mean value of FUV nighttime O+ Density, taken over all good quality L2 datapoints in a 48-day time-span, as a function of altitude,longitude, latitude, time. Derived from ICON_L24_Disk_ON2.",
          "Cadence": "P10D",
          "Units": "1/cm^3",
          "ValidMin": "0",
          "ValidMax": "1.000000020040877e+20",
          "FillValue": "-999",
          "Particle": {
            "ParticleType": "Ion",
            "Qualifier": "Average",
            "ParticleQuantity": "NumberDensity",
            "AtomicNumber": "8"
          }
        },
        {
          "Name": "Binned HMF2",
          "ParameterKey": "ICON_L33_HMF2",
          "Description": "Binned HMF2. Mean value of HMF2, taken over all good quality L2 datapoints in a 48-day time-span, as a function of longitude, latitude, time. Derived from ICON_L25_HMF2..",
          "Cadence": "P10D",
          "Units": "km",
          "ValidMin": "0",
          "ValidMax": "1.000000020040877e+20",
          "FillValue": "-999",
          "Support": {
            "Qualifier": "Scalar",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Binned NMF2",
          "ParameterKey": "ICON_L33_NMF2",
          "Description": "Electron density at the peak of the F2 layer from retrieval. Mean value of NMF2, taken over all good quality L2 datapoints in a 48-day time-span, as a function of longitude, latitude, time. Derived from ICON_L25_NMF2.",
          "Cadence": "P10D",
          "Units": "1/cm^3",
          "ValidMin": "0",
          "ValidMax": "1.000000020040877e+20",
          "FillValue": "-999",
          "Particle": {
            "ParticleType": "Electron",
            "Qualifier": "Average",
            "ParticleQuantity": "NumberDensity"
          }
        },
        {
          "Name": "Number of data points",
          "ParameterKey": "ICON_L33_Datapoints",
          "Description": "Number of data points in each 48 day average, as a function of altitude, longitude, latitude, time.",
          "Cadence": "P10D",
          "ValidMin": "0",
          "ValidMax": "1.000000020040877e+20",
          "FillValue": "-999",
          "Support": {
            "Qualifier": "Scalar",
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Sigma O+ Density",
          "ParameterKey": "ICON_L33_Sigma_OPlus",
          "Description": "1 standard deviation of the good O+ values used to compute the mean, as a function of altitude, longitude, latitude, time.",
          "Cadence": "P10D",
          "Units": "1/cm^3",
          "ValidMin": "0",
          "ValidMax": "1.000000020040877e+20",
          "FillValue": "-999",
          "Particle": {
            "ParticleType": "Ion",
            "Qualifier": "StandardDeviation",
            "ParticleQuantity": "NumberDensity",
            "AtomicNumber": "8"
          }
        },
        {
          "Name": "Sigma HMF2",
          "ParameterKey": "ICON_L33_Sigma_HMF2",
          "Description": "1 standard deviation of the good column HMF2 values used to compute the mean, as a function of longitude, latitude, time.",
          "Cadence": "P10D",
          "Units": "km",
          "ValidMin": "0",
          "ValidMax": "1.000000020040877e+20",
          "FillValue": "-999",
          "Support": {
            "Qualifier": "StandardDeviation",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Sigma HMF2",
          "ParameterKey": "ICON_L33_Sigma_NMF2",
          "Description": "Electron density at the peak of the F2 layer from retrieval. 1 standard deviation of the good column NMF2 values used to compute the mean, as a function of longitude, latitude, time.",
          "Cadence": "P10D",
          "Units": "1/cm^3",
          "ValidMin": "0",
          "ValidMax": "1.000000020040877e+20",
          "FillValue": "-999",
          "Particle": {
            "ParticleType": "Electron",
            "Qualifier": "StandardDeviation",
            "ParticleQuantity": "NumberDensity"
          }
        },
        {
          "Name": "Binned Altitude Grid",
          "ParameterKey": "ICON_L33_Altitude",
          "Description": "Altitude of the O+ data, binned in 4 km intervals, altitude +/- 2.0 km. Derived from ICON_L25_O+_Profile_Altitude.",
          "Cadence": "P10D",
          "Units": "km",
          "ValidMin": "154",
          "ValidMax": "510",
          "FillValue": "-999",
          "Support": {
            "Qualifier": "Direction",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Local Time Bin",
          "ParameterKey": "ICON_L33_LocalTime",
          "Description": "Local time binned in 0.5 hour intervals, local time +/- 0.25 hours.",
          "Cadence": "P10D",
          "Units": "hours",
          "ValidMin": "0.25",
          "ValidMax": "23.75",
          "FillValue": "-999",
          "Support": {
            "Qualifier": "Direction",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Latitude Bin",
          "ParameterKey": "ICON_L33_Latitude",
          "Description": "Latitude of the O+ data, binned in 5 degree intervals, latitude +/- 2.5 degrees. Derived from ICON_L25_O+_Profile_Latitude.",
          "Cadence": "P10D",
          "Units": "degrees",
          "ValidMin": "-10",
          "ValidMax": "50",
          "FillValue": "-999",
          "Support": {
            "Qualifier": "Direction",
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Longitude Bin",
          "ParameterKey": "ICON_L33_Longitude",
          "Description": "Longitude of the O+ data, binned in 15 degree intervals, longitude +/- 7.5 degrees. Derived from ICON_L25_O+_Profile_Longitude.",
          "Cadence": "P10D",
          "Units": "degrees",
          "ValidMin": "0",
          "ValidMax": "360",
          "FillValue": "-999",
          "Support": {
            "Qualifier": "Direction",
            "SupportQuantity": "Positional"
          }
        }
      ]
    }
  }
}