{
  "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_5_0.xsd",
    "Version": "2.5.0",
    "DisplayData": {
      "ResourceID": "spase://ISWI/DisplayData/GIRO/SKYMAP/PT15M",
      "ResourceHeader": {
        "ResourceName": "GIRO Doppler Skymap Plots",
        "ReleaseDate": "2019-05-05T12:34:56Z",
        "RevisionHistory": {
          "RevisionEvent": [
            {
              "ReleaseDate": "2023-07-28T13:13:33",
              "Note": "Edited Acknowledgement, AccessURL, InformationURL,\n\t  added Contact, SpatialCoverage and updated SPASE version. LNG"
            },
            {
              "ReleaseDate": "2024-05-03T00:00:00",
              "Note": "Moved GBO to ISWI plus update revisionhistory, SAB"
            }
          ]
        },
        "Description": "Collection of GIRO Doppler skymap images at University of Massachusetts Lowell, covering selected ionosonde stations and periods of time from 1993-07-20 to current time, including 28 real-time feeds. Total number of GIRO locations represented is 50 as of February 14, 2012. Access to images is arranged via a webpage containing a browsable data availability table. GIRO skymaps are visualized by plotting received echoes in the polar coordinate system using echo zenith and azimuth information. Color scale is used to represent Doppler Velocity of the signal reflection area in the ionosphere. Additionally, observed echoes on the skymap are used to derived zenith and azimuth of the ionospheric tilt, as well as vertical and horizontal components of the bulk ionospheric motion across the sounder location.",
        "Acknowledgement": "\tHeavy investments of time, effort, expertise,\n\tand funds continue to be made to produce, collect, quality\n\tcontrol, interpret, and archive ionosonde data. It is therefore\n\timportant that the data suppliers and Lowell GIRO Data Center (LGDC) are appropriately\n\tacknowledged in scientific publications that include analysis of\n\tdata obtained from LGDC servers.\n\n\tPlease read Rules of the Road\n\thttps://giro.uml.edu/didbase/RulesOfTheRoad.html for license\n\tinformation and refer to Acknowledgements List\n\thttps://giro.uml.edu/didbase/acknowledgements.htm to use GIRO\n\tdata per license requirements.\n",
        "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://SMWG/Observatory/GIRO",
          "AssociationType": "ObservedBy"
        },
        "PriorID": [
          "spase://VWO/DisplayData/GIRO/SKYMAP.PT15M",
          "spase://VSPO/DisplayData/GIRO/SKYMAP/PT15M"
        ]
      },
      "AccessInformation": {
        "RepositoryID": "spase://SMWG/Repository/UML/DriftBase",
        "Availability": "Online",
        "AccessRights": "Open",
        "AccessURL": {
          "Name": "GIRO DriftBase Skymap Browser",
          "URL": "https://giro.uml.edu/driftbase/",
          "Description": "Repository of GIRO skymap images at University of Massachusetts Lowell, containing browsable interface to retrieve individual images.",
          "Language": "en"
        },
        "Format": "PNG",
        "Encoding": "None",
        "DataExtent": {
          "Quantity": "700000000",
          "Units": "byte",
          "Per": "PT15M"
        },
        "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.\n"
      },
      "ProcessingLevel": "Calibrated",
      "ProviderProcessingLevel": "Level 2, Doppler skymap data processed to calculate ionospheric tilt and bulk plasma drift velocity. All images produced by ShowSkymap servlet from raw and processed data.",
      "InstrumentID": "spase://SMWG/Instrument/GIRO/Ionosonde",
      "MeasurementType": "Waves.Active",
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "1987-01-01T00:00:05Z",
          "RelativeStopDate": "PT5M",
          "Note": "Cadence of skymap measurements may vary depending on the scheduling requirements at GIRO sites; 15 minutes is nominal cadence"
        },
        "Cadence": "PT15M",
        "Exposure": "PT1M"
      },
      "SpectralRange": "RadioFrequency",
      "DisplayCadence": "PT15M",
      "ObservedRegion": "Earth.NearSurface.Ionosphere",
      "SpatialCoverage": {
        "CoordinateSystem": {
          "CoordinateRepresentation": "Cartesian",
          "CoordinateSystemName": "GEO"
        }
      },
      "Keyword": [
        "Skymap",
        "Echo",
        "Bulk Plasma Velocity",
        "Ionospheric Tilt"
      ],
      "Parameter": {
        "Name": "Signal Strength",
        "Description": "Received signal strength, expressed as AC Electric Field in dB units relative to digitizer 1.",
        "Cadence": "PT15M",
        "Units": "dB",
        "Wave": {
          "WaveType": "PlasmaWaves",
          "Qualifier": [
            "Magnitude",
            "Pseudo"
          ],
          "WaveQuantity": "ACElectricField",
          "FrequencyRange": {
            "SpectralRange": "RadioFrequency",
            "Low": "500",
            "High": "30000",
            "Units": "kHz"
          }
        }
      }
    }
  }
}