{
  "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_6_0.xsd",
    "Version": "2.6.0",
    "NumericalData": {
      "ResourceID": "spase://ISWI/NumericalData/GIRO/CHARS/PT15M",
      "ResourceHeader": {
        "ResourceName": "GIRO Ionogram-Derived Ionospheric Characteristics",
        "ReleaseDate": "2018-06-28T22:02:01Z",
        "RevisionHistory": {
          "RevisionEvent": [
            {
              "ReleaseDate": "2023-07-28T12:30:53",
              "Note": "Edited Acknowledgement, AccessURL, InformationURL, and URL in\n\t       Description, added Contact and updated SPASE version. LNG"
            },
            {
              "ReleaseDate": "2024-05-03T00:00:00",
              "Note": "Moved GBO to ISWI plus update revisionhistory, SAB"
            },
            {
              "ReleaseDate": "2024-06-03T00:00:00",
              "Note": "Fixed Instrument URL, SAB"
            }
          ]
        },
        "Description": "Standard ionogram-derived characteristics obtained by Global Ionospheric Radio Observatory (GIRO) operated by University of Massachusetts Lowell. The list of standard URSI characteristics that can be derived from ionograms can be found in the SAO.XML Data Model Specification for standard ionosonde data exchange, Appendix C, https://ulcar.uml.edu/SAOXML/. In order to request the characteristics values from GIRO, it is necessary to call DIDBGetValues() servlet at GIRO server using standard HTTP call that returns a text document. The values in the document are calculated using automatic or manual interpretation of ionogram images. Each measurement is accompanied by a confidence score value (from 0 to 100, 100 is best autoscaled confidence or data obtained manually) and a set of two QD letters (qualitative and descriptive letters per URSI ionogram interpretation manual). When QD letters are set to //, reported value is obtained automatically, all other combinations of the letters correspond to manual scaling.",
        "Acknowledgement": "Heavy investments of time, effort, expertise,\n      and funds continue to be made to produce, collect, quality\n      control, interpret, and archive ionosonde data. It is therefore\n      important that the data suppliers and Lowell GIRO Data Center\n      (LGDC) are appropriately acknowledged in scientific publications\n      that include analysis of data obtained from LGDC servers.\n\n      Please read Rules of the Road\n      https://giro.uml.edu/didbase/RulesOfTheRoad.html for license\n      information and refer to Acknowledgements List\n      https://giro.uml.edu/didbase/acknowledgements.htm to use GIRO\n      data per license requirements.",
        "Contact": [
          {
            "PersonID": "spase://SMWG/Person/Bodo.W.Reinisch",
            "Role": "PrincipalInvestigator"
          },
          {
            "PersonID": "spase://SMWG/Person/Ivan.A.Galkin",
            "Role": [
              "DataProducer",
              "TechnicalContact"
            ]
          },
          {
            "PersonID": "spase://SMWG/Person/Leonard.N.Garcia",
            "Role": "MetadataContact"
          }
        ],
        "InformationURL": {
          "Name": "GIRO (Global Ionospheric Radio Observatory) Home Page",
          "URL": "https://giro.uml.edu",
          "Description": "Access to real-time data and software tools",
          "Language": "en"
        },
        "Association": {
          "AssociationID": "spase://ISWI/DisplayData/GIRO/GRM/PT15M",
          "AssociationType": "DerivedFrom"
        },
        "PriorID": [
          "spase://VWO/NumericalData/GIRO/CHARS.PT15M",
          "spase://VSPO/NumericalData/GIRO/CHARS/PT15M"
        ]
      },
      "AccessInformation": {
        "RepositoryID": "spase://SMWG/Repository/UML/DIDBase",
        "Availability": "Online",
        "AccessRights": "Open",
        "AccessURL": {
          "Name": "GIRO access to ionogram-derived ionospheric characteristics",
          "URL": "https://giro.uml.edu/didbase/scaled.php",
          "Description": "GIRO webpage that accesses DIDBase repository and retrieves the list of characteristics.",
          "Language": "en"
        },
        "Format": "Text.ASCII",
        "Encoding": "ASCII",
        "Acknowledgement": "Heavy investments of time, effort, expertise,\n      and funds continue to be made to produce, collect, quality\n      control, interpret, and archive ionosonde data. It is therefore\n      important that the data suppliers and Lowell GIRO Data Center (LGDC) are appropriately\n      acknowledged in scientific publications that include analysis of\n      data obtained from LGDC servers.\n\n      Please read Rules of the Road\n      https://giro.uml.edu/didbase/RulesOfTheRoad.html for license\n      information and refer to Acknowledgements List\n      https://giro.uml.edu/didbase/acknowledgements.htm to use GIRO\n      data per license requirements."
      },
      "ProcessingLevel": "Calibrated",
      "ProviderProcessingLevel": "Ionogram-scaled ionospheric characteristics in physical units.",
      "InstrumentID": "spase://ISWI/Instrument/GIRO/Ionosonde",
      "MeasurementType": "Waves.Active",
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "1987-01-01T00:00:05Z",
          "RelativeStopDate": "PT5M",
          "Note": "Cadence of ionogram measurements may vary depending on the scheduling requirements at GIRO sites; 15 minutes is nominal cadence"
        },
        "Cadence": "PT15M",
        "Exposure": "PT1M"
      },
      "SpectralRange": "RadioFrequency",
      "ObservedRegion": "Earth.NearSurface.Ionosphere",
      "Caveats": "Data coverage is varying among different GIRO instrument locations",
      "Keyword": [
        "Ionogram",
        "Ionospheric Characteristics"
      ]
    }
  }
}