{
  "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_0.xsd",
    "Version": "2.7.0",
    "DisplayData": {
      "ResourceID": "spase://HamSCI/DisplayData/HFRadars/AmateurRadioSignalReport/AmateurRadioSignalReport",
      "NamingAuthority": "HamSCI",
      "ResourceType": "DisplayData",
      "ResourceHeader": {
        "ResourceName": "Amateur Radio Signal Report",
        "AlternateName": "HamSCI Spot Density Plots",
        "ReleaseDate": "2025-04-02T15:29:35",
        "Description": "The HamSCI display data consists of daily radio spot density plots visualizing amateur radio spots across six frequency bands (1.8 MHz, 3.5 MHz, 7 MHz, 14 MHz, 21 MHz, and 28 MHz). Each spot represents the midpoint between a successful transmitting-receiving pair.\r\n\r\nThe plots are organized into two columns:\r\n\r\nLeft Column displays the global distribution of radio spots on a map, with the number of spots represented in log scale as color intensity.\r\n\r\nRight Column displays the number of radio spots as a function of the midpoint solar local time (hour) and propagation range (km), also presented in log scale.\r\n\r\nThese plots provide insights into the spatial and temporal variations of radio propagation.",
        "Acknowledgement": "Please acknowledge HamSCI team at The University of Scranton and The University of Alabama that collects amateur radio signal report from volunteers via three up-stream data providers including WSPRNet, PSKReporter, and Reverse Beacon Network. The data are available to public at MIT Madrigal database. This effort is supported by NASA grant number 80NSSC21K1772.",
        "Funding": {
          "Agency": "NASA",
          "Project": "Enabling Space Weather Research with Global Scale Amateur Radio Datasets",
          "AwardNumber": "NASA 80NSSC21K1772"
        },
        "Contact": [
          {
            "PersonID": "spase://SMWG/Person/Nathaniel.Frissell",
            "Role": "PrincipalInvestigator"
          },
          {
            "PersonID": "spase://SMWG/Person/William.Engelke",
            "Role": "TechnicalContact"
          },
          {
            "PersonID": "spase://SMWG/Person/Kornyanat.Hozumi",
            "Role": "MetadataContact"
          }
        ]
      },
      "AccessInformation": {
        "RepositoryID": "spase://HamSCI/Repository/Madrigal",
        "Availability": "Online",
        "AccessRights": "Open",
        "AccessURL": {
          "URL": "https://cedar.openmadrigal.org/listExperiments?isGlobal=on&categories=4&instruments=8308&showDefault=on&start_date_0=1950-01-01&start_date_1=00%3A00%3A00&end_date_0=2025-12-31&end_date_1=23%3A59%3A59",
          "Description": "Daily HamSCI Spot Density Plots in jpg format"
        },
        "Format": "JPEG",
        "AccessFilenameTemplate": "The plot file follows the naming pattern \"$Y-$m-$d.jpg\", where $Y is the year, $m is the month, and $d is the day."
      },
      "MeasurementType": "Waves",
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "2009-02-24T00:00:00",
          "RelativeStopDate": "-P1M",
          "Note": "Data are current to within about a month. Cadence is irregular."
        }
      }
    }
  }
}