{
  "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_2_9.xsd",
    "Version": "2.2.9",
    "NumericalData": {
      "ResourceID": "spase://NASA/NumericalData/THEMIS/Ground/Fort.Smith/ASI/full_PT3S",
      "ResourceHeader": {
        "ResourceName": "THEMIS Ground-based All Sky Imager; Full Resolution Images.",
        "AlternateName": "THEMIS-Ground ASF",
        "ReleaseDate": "2020-07-07T21:15:31Z",
        "Description": "THEMIS Ground All Sky Imager at Fort Smith: 256 x 256 pixel full resolution images of auroral oval.  The ASI stations monitor a 170 degree field of view imaging the auroral oval at kilometer resolution.  The ASI is comprised of a fisheye lens and CCD in a stainless steel enclosure topped with a transparent acrylic dome.  The CCD has a resolution of 256 x 256 pixels.  Exposure control ranges from 5 s to 1 ms although the typical data rate is one image every 3 seconds.  Silicone heaters keep the instrument within the nominal temperature range.  During daylight hours a sun shades deploy to protect the CCD.\n\t  ",
        "Acknowledgement": "We acknowledge NASA contract NAS5-02099 and V. Angelopoulos for use of data from the THEMIS Mission. Specifically: S. Mende and E. Donovan for use of the ASI data, and the CSA for logistical support in fielding and data retrieval from the GBO stations.",
        "Contact": [
          {
            "PersonID": "spase://SMWG/Person/Vassilis.Angelopoulos",
            "Role": "PrincipalInvestigator"
          },
          {
            "PersonID": "spase://SMWG/Person/Stephen.B.Mende",
            "Role": "CoInvestigator"
          },
          {
            "PersonID": "spase://SMWG/Person/Eric.Donovan",
            "Role": "CoInvestigator"
          }
        ],
        "InformationURL": {
          "Name": "THEMIS Summary Plots",
          "URL": "http://themis.ssl.berkeley.edu/gbo/display.py?view_type=summary",
          "Description": "Summary plots containing ASI thumbnail images; useful for determining when ASI data exists."
        },
        "PriorID": [
          "spase://VMO/NumericalData/THEMIS/Ground/CANMAG/FSMI/ASI/full_PT3S",
          "spase://VSPO/NumericalData/THEMIS/Ground/Fort.Smith/ASI/full_PT3S"
        ]
      },
      "AccessInformation": {
        "RepositoryID": "spase://SMWG/Repository/UCB/THEMIS",
        "Availability": "Online",
        "AccessRights": "Open",
        "AccessURL": {
          "Name": "THEMIS Web Data",
          "URL": "http://themis.ssl.berkeley.edu/data/themis/thg/l1/asi/fsmi/"
        },
        "Format": "CDF",
        "Encoding": "None"
      },
      "InstrumentID": "spase://SMWG/Instrument/THEMIS/Ground/CANMAG/FSMI/ASI",
      "MeasurementType": "ImageIntensity",
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "2005-11-28T08:00:00",
          "RelativeStopDate": "-P1Y"
        },
        "Cadence": "PT3S"
      },
      "Caveats": "ASF data is retrieved by physically swapping hard drives at GBO site, therefore the data is usually not available for at least 3-5 months.",
      "Parameter": [
        {
          "Name": "thg_asf_fsmi",
          "ParameterKey": "thg_asf_fsmi",
          "Description": "Full images of 256x256 pixels; saturation counts for each pixel.",
          "Units": "counts",
          "Structure": {
            "Size": "256 256"
          },
          "Wave": {
            "Qualifier": "Scalar",
            "WaveQuantity": "Intensity"
          }
        },
        {
          "Name": "thg_asf_fsmi_column",
          "ParameterKey": "thg_asf_fsmi_column",
          "Description": "Image column number; x-dimension, image width.",
          "Structure": {
            "Size": "256"
          },
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "thg_asf_fsmi_row",
          "ParameterKey": "thg_asf_fsmi_row",
          "Description": "Image row number; y-dimension, image height.",
          "Structure": {
            "Size": "256"
          },
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "thg_asf_fsmi_time",
          "ParameterKey": "thg_asf_fsmi_time",
          "Description": "Start of integration time, UTC, in seconds since 01-Jan-1970 00:00:00",
          "Caveats": "Not including leap seconds",
          "Units": "s",
          "ValidMin": "0.0",
          "ValidMax": "5.0E9",
          "FillValue": "NaN",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "thg_asf_fsmi_tend",
          "ParameterKey": "thg_asf_fsmi_tend",
          "Description": "Integration end time, UTC, in seconds since 01-Jan-1970 00:00:00",
          "Caveats": "Not including leap seconds",
          "Units": "s",
          "ValidMin": "0.0",
          "ValidMax": "5.0E9",
          "FillValue": "NaN",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        }
      ]
    }
  }
}