{
  "Spase": {
    "xmlns": "http://www.spase-group.org/data/schema",
    "xmlns:xsi": "http://www.w3.org/2001/XMLSchema-instance",
    "xsi:schemaLocation": "http://www.spase-group.org/data/schema  http://www.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://NOAA/NumericalData/GOES/16/EXIS/XRS/Science/L2/BKD1D/P1D",
      "NamingAuthority": "NOAA",
      "ResourceType": "NumericalData",
      "ResourceHeader": {
        "ResourceName": "GOES-16 EXIS/XRS Science Level 2 Daily X-ray Background and Mean Irradiance",
        "AlternateName": "GOES-16 XRS L2 Science-Quality 1-day Background (bkd1d)",
        "ReleaseDate": "2026-10-22T00:00:00Z",
        "RevisionHistory": {
          "RevisionEvent": {
            "ReleaseDate": "2026-10-22T00:00:00Z",
            "Note": "Initial metadata creation. SY"
          }
        },
        "Description": "GOES-16 EXIS/XRS science-quality Level 2 daily background (bkd1d) product distributed as a single NetCDF-4 file spanning the available observation period. It provides one daily X-ray background irradiance estimate and one daily mean irradiance for each of the XRS-A (0.05–0.4 nm) and XRS-B (0.1–0.8 nm) channels, together with daily mean coverage fractions and quality flags. Background values are derived from one-minute average XRS measurements: hourly means are calculated, the minimum hourly mean is selected within each of three eight-hour blocks, and the background is the lower of the central block minimum and the average of the minima from the first and third blocks. The science-quality data are retrospectively reprocessed and distributed separately from the operational data. Consult the XRS Level 2 ReadMe and User Guide for data interpretation.",
        "PublicationInfo": {
          "Title": "GOES-R Series Extreme Ultraviolet and X-ray Irradiance Sensors (EXIS) Level 2 Products",
          "Authors": "Machol, Janet; Codrescu, Stefan; Viereck, Rodney",
          "PublicationDate": "2018-09-01T00:00:00Z",
          "PublishedBy": "NOAA National Centers for Environmental Information"
        },
        "Contact": [
          {
            "PersonID": "spase://SMWG/Person/Janet.L.Machol",
            "Role": "InstrumentScientist",
            "Note": "NOAA NCEI Instrument Scientist and scientific contact for GOES-R EXIS/XRS."
          },
          {
            "PersonID": "spase://SMWG/Person/NOAA.GOES-R.EXIS",
            "Role": "GeneralContact",
            "Note": "NOAA GOES-R EXIS Team"
          }
        ],
        "InformationURL": [
          {
            "Name": "NOAA NCEI GOES-R EXIS Level 2 Dataset Metadata",
            "URL": "https://www.ncei.noaa.gov/access/metadata/landing-page/bin/iso?id=gov.noaa.ncei.swx%3Aexis-l2-goesr",
            "Description": "Official NOAA dataset description, citation, access details and lineage."
          },
          {
            "Name": "NOAA GOES-R XRS Level 2 Data ReadMe",
            "URL": "https://data.ngdc.noaa.gov/platforms/solar-space-observing-satellites/goes/goes16/l2/docs/GOES-R_XRS_L2_Data_ReadMe.pdf",
            "Description": "NOAA product descriptions, operational/science processing differences, and data caveats."
          },
          {
            "Name": "NOAA GOES-R XRS Level 2 Data User Guide",
            "URL": "https://data.ngdc.noaa.gov/platforms/solar-space-observing-satellites/goes/goes16/l2/docs/GOES-R_XRS_L2_Data_Users_Guide.pdf",
            "Description": "The User Guide describes the algorithms, parameters, time conventions, and interpretation of the XRS Level 2 products."
          }
        ]
      },
      "AccessInformation": {
        "RepositoryID": "spase://SMWG/Repository/NOAA/NCEI",
        "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": "NOAA-produced data are publicly available under NOAA's open data policy. Users should cite the NOAA NCEI dataset as specified in the dataset metadata."
          }
        },
        "AccessURL": {
          "Name": "NOAA NCEI GOES-16 EXIS/XRS Science-Quality Level 2 Daily Background NetCDF Archive",
          "URL": "https://data.ngdc.noaa.gov/platforms/solar-space-observing-satellites/goes/goes16/l2/data/xrsf-l2-bkd1d_science/",
          "Style": "Listing",
          "Description": "Directory containing the full-period daily background and daily average XRS Level 2 NetCDF file."
        },
        "Format": "NetCDF",
        "Encoding": "None"
      },
      "ProviderResourceName": "Geostationary Operational Environmental Satellite, R-Series (GOES-R) Extreme Ultraviolet X-Ray Irradiance Sensors (EXIS) Level 2 Products",
      "ProviderProcessingLevel": "Science-Quality Level 2",
      "InstrumentID": "spase://NOAA/Instrument/GOES/16/EXIS/XRS",
      "MeasurementType": "Irradiance",
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "2017-02-07T00:00:00Z",
          "StopDate": "2025-04-07T23:59:59Z"
        },
        "Cadence": "P1D"
      },
      "ObservedRegion": [
        "Sun",
        "Sun.Corona"
      ],
      "Parameter": [
        {
          "Name": "Time",
          "ParameterKey": "time",
          "Description": "Record start time of each daily XRS Level 2 sample, expressed as seconds since 2000-01-01 12:00:00 UTC, neglecting leap seconds.",
          "Cadence": "P1D",
          "Units": "s",
          "FillValue": "-9999",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "XRS-A Daily Background Irradiance",
          "ParameterKey": "bkd1d_xrsa_flux",
          "Description": "Daily background solar X-ray irradiance for XRS-A (0.05-0.4 nm). The background is derived from one-minute average measurements using hourly means in three 8-hour blocks.",
          "Cadence": "P1D",
          "Units": "W/m^2",
          "FillValue": "-9999",
          "Wave": {
            "WaveType": "Photon",
            "WaveQuantity": "EnergyFlux",
            "WavelengthRange": {
              "Low": "0.05",
              "High": "0.4",
              "Units": "nm"
            }
          }
        },
        {
          "Name": "XRS-A Daily Background Quality Flag",
          "ParameterKey": "bkd1d_xrsa_flag",
          "Description": "Quality flag for bkd1d_xrsa_flux: 0 indicates good data and 1 indicates no value.",
          "Cadence": "P1D",
          "FillValue": "255",
          "Support": {
            "SupportQuantity": "DataQuality"
          }
        },
        {
          "Name": "XRS-B Daily Background Irradiance",
          "ParameterKey": "bkd1d_xrsb_flux",
          "Description": "Daily background solar X-ray irradiance for XRS-B (0.1-0.8 nm). The background is derived from one-minute average measurements using hourly means in three 8-hour blocks.",
          "Cadence": "P1D",
          "Units": "W/m^2",
          "FillValue": "-9999",
          "Wave": {
            "WaveType": "Photon",
            "WaveQuantity": "EnergyFlux",
            "WavelengthRange": {
              "Low": "0.1",
              "High": "0.8",
              "Units": "nm"
            }
          }
        },
        {
          "Name": "XRS-B Daily Background Quality Flag",
          "ParameterKey": "bkd1d_xrsb_flag",
          "Description": "Quality flag for bkd1d_xrsb_flux: 0 indicates good data and 1 indicates no value.",
          "Cadence": "P1D",
          "FillValue": "255",
          "Support": {
            "SupportQuantity": "DataQuality"
          }
        },
        {
          "Name": "XRS-A Daily Mean Irradiance",
          "ParameterKey": "avg1d_xrsa_flux",
          "Description": "Daily average solar X-ray irradiance in the XRS-A band (0.05-0.4 nm).",
          "Cadence": "P1D",
          "Units": "W/m^2",
          "FillValue": "-9999",
          "Wave": {
            "WaveType": "Photon",
            "WaveQuantity": "EnergyFlux",
            "WavelengthRange": {
              "Low": "0.05",
              "High": "0.4",
              "Units": "nm"
            }
          }
        },
        {
          "Name": "XRS-A Daily Average Coverage",
          "ParameterKey": "avg1d_xrsa_coverage",
          "Description": "Fraction of the day contributing to the XRS-A daily average irradiance, from 0 to 1.",
          "Cadence": "P1D",
          "Units": "1",
          "FillValue": "-9999",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "XRS-A Daily Average Quality Flag",
          "ParameterKey": "avg1d_xrsa_flag",
          "Description": "Quality flag for avg1d_xrsa_flux: 0 indicates good data, 1 indicates minimum coverage not met, and 2 indicates no data.",
          "Cadence": "P1D",
          "FillValue": "255",
          "Support": {
            "SupportQuantity": "DataQuality"
          }
        },
        {
          "Name": "XRS-B Daily Mean Irradiance",
          "ParameterKey": "avg1d_xrsb_flux",
          "Description": "Daily average solar X-ray irradiance in the XRS-B band (0.1-0.8 nm).",
          "Cadence": "P1D",
          "Units": "W/m^2",
          "FillValue": "-9999",
          "Wave": {
            "WaveType": "Photon",
            "WaveQuantity": "EnergyFlux",
            "WavelengthRange": {
              "Low": "0.1",
              "High": "0.8",
              "Units": "nm"
            }
          }
        },
        {
          "Name": "XRS-B Daily Average Coverage",
          "ParameterKey": "avg1d_xrsb_coverage",
          "Description": "Fraction of the day contributing to the XRS-B daily average irradiance, from 0 to 1.",
          "Cadence": "P1D",
          "Units": "1",
          "FillValue": "-9999",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "XRS-B Daily Average Quality Flag",
          "ParameterKey": "avg1d_xrsb_flag",
          "Description": "Quality flag for avg1d_xrsb_flux: 0 indicates good data, 1 indicates minimum coverage not met, and 2 indicates no data.",
          "Cadence": "P1D",
          "FillValue": "255",
          "Support": {
            "SupportQuantity": "DataQuality"
          }
        }
      ]
    }
  }
}