{
  "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 https://www.spase-group.org/data/schema/spase-2_4_0.xsd",
    "Version": "2.4.0",
    "NumericalData": {
      "ResourceID": "spase://GBO/NumericalData/Indices/Kp.Ap",
      "ResourceHeader": {
        "ResourceName": "Kp, Sum_Kp, ap and Ap Geomagnetic Indices",
        "ReleaseDate": "2020-03-17T12:34:56.789",
        "RevisionHistory": {
          "RevisionEvent": {
            "ReleaseDate": "2020-03-17T12:34:56.789",
            "Note": "Updated http URL to https, add one new Access URL and one new Information URL, LFB"
          }
        },
        "Description": "Kp, Sum_Kp, (3-hour) ap, and (Daily) Ap geomagnetic indices.\n\nKp and ap are 3-hour planetary indices and Sum_Kp and Ap are daily summed and averaged (respectively) indices created from Kp. These indices were created at the Geophysical Institute of Gottingen University through 1996, and at GeoForschungsZentrum (GFZ, Potsdam) subsequently.\n\nGFZ, url given below, is the primary distribution site.\n\nThe web site of WDC for Geomagnetism at Kyoto U., url given below, offers plots and numeric downloads for Kp and related indices.\n\nThe data are currently (as of 12/07/2011) \"final\" from January, 1957, through December, 2008, and are \"real time\" thereafter, through the current day.\n\nAlternative sources of many of the Kp and related indices include the hourly OMNI data set at NASA/GSFC/SPDF.\n\nWorldwide Indices\n\nThe subscript p means planetary and designates a global magnetic activity index. The following 13 observatories, which lie between 46 and 63 degrees north and south geomagnetic latitude, now contribute to the planetary indices: Lerwick (UK), Eskdalemuir (UK), Hartland (UK), Ottawa (Canada), Fredericksburg (USA), Meanook (Canada), Sitka (USA), Eyrewell (New Zealand), Canberra (Australia), Lovo (Sweden), Brorfelde (Denmark), Wingst and Niemegk (Germany).\n\nThree-hour-range Index Kp\n\nKp index derives from Ks indices that isolate solar particle effects on the earth's magnetic field; over a 3-hour period, they classify into disturbance levels the range of variation of the more unsettled horizontal field component. Each activity level relates almost logarithmically to its corresponding disturbance amplitude. Three-hour indices discriminate conservatively between true magnetic field perturbations and the quiet-day variations produced by ionospheric currents.\n\nKs indices range in 28 steps from 0 (quiet) to 9 (greatly disturbed) with fractional parts expressed in thirds of a unit. A Ks-value equal to 27, for example, means 2 and 2/3 or 3-; a Ks-value equal to 30 means 3 and 0/3 or 3 exactly; and a Ks-value equal to 33 means 3 and 1/3 or 3+. The arithmetic mean of the Ks values scaled at the 13 observatories listed above gives Kp.\n\nEquivalent Amplitude ap\n\nThe ap-index ranges from 0 to 400 and represents a Kp-value converted to a linear scale in nT (nanoTesla) - a scale that measures equivalent disturbance amplitude of a station at which K=9 has a lower limit of 400 nT.",
        "Acknowledgement": "GeoForschungsZentrum (GFZ-Potsdam) for creating Kp and related indices since 1996.",
        "Contact": {
          "PersonID": "spase://SMWG/Person/Hans.Joachim.Linthe",
          "Role": "GeneralContact"
        },
        "InformationURL": [
          {
            "Name": "Indices of Global Geomagnetic Activity",
            "URL": "https://www-app3.gfz-potsdam.de/kp_index/index.html",
            "Description": "GFZ's pages about Geomagnetic Indices and data links."
          },
          {
            "Name": "GZF Data Services Geomagnetic Kp index web site",
            "URL": "https://dataservices.gfz-potsdam.de/panmetaworks/showshort.php?id=escidoc:5216888",
            "Description": "Web site descriing the IAGA-endorsed Kp, ap, Ap, Cp and C9 indices and the International Quiet and Disturbed Days. This site can be reached via DOI: the DOI ‘https://doi.org/10.5880/Kp.0001."
          },
          {
            "Name": "Kp/Ap File Format",
            "URL": "ftp://ftp.ngdc.noaa.gov/STP/GEOMAGNETIC_DATA/INDICES/KP_AP/kp_ap.fmt",
            "Description": "Description of the WDC file format for selected Kp-related indices"
          }
        ],
        "PriorID": "spase://VMO/NumericalData/Indices/Kp.Ap"
      },
      "AccessInformation": [
        {
          "RepositoryID": "spase://SMWG/Repository/WDC/Geomagnetism/GFZ.Potsdam",
          "Availability": "Online",
          "AccessRights": "Open",
          "AccessURL": {
            "Name": "GFZ-Potsdam, Kp and ap indices, FTP access",
            "URL": "ftp://ftp.gfz-potsdam.de/pub/home/obs/kp-ap/",
            "Description": "FTP download path of Kp and related indices at GFZ-Potsdam, including index documentation and history files."
          },
          "Format": "Text",
          "Acknowledgement": "To GFZ for providing data"
        },
        {
          "RepositoryID": "spase://SMWG/Repository/WDC/Geomagnetism/GFZ.Potsdam",
          "Availability": "Online",
          "AccessRights": "Open",
          "AccessURL": {
            "Name": "GFZ-Potsdam, Kp and ap indices, HTTP access",
            "URL": "https://datapub.gfz-potsdam.de/download/10.5880.Kp.0001/Kp_definitive/",
            "Description": "HTTP download path of Kp and ap indices at GFZ-Potsdam."
          },
          "Format": "Text",
          "Acknowledgement": "To GFZ for providing data"
        },
        {
          "RepositoryID": "spase://SMWG/Repository/WDC/Geomagnetism/KyotoU",
          "Availability": "Online",
          "AccessRights": "Open",
          "AccessURL": {
            "Name": "WDC for Geomagnetism at Kyoto University, Kp and ap indices",
            "URL": "http://wdc.kugi.kyoto-u.ac.jp/kp/index.html",
            "Description": "Multi-option (html forms) access to Kp and related indices at Kyoto."
          },
          "Format": "Text",
          "Acknowledgement": "To WDC for Geomagnetism, Kyoto, for providing data"
        }
      ],
      "ProviderProcessingLevel": "Calibrated",
      "MeasurementType": [
        "MagneticField",
        "ActivityIndex"
      ],
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "1932-01-01T00:00:00",
          "RelativeStopDate": "-P1D"
        },
        "Cadence": "PT3H"
      },
      "ObservedRegion": "Earth.Surface",
      "Parameter": [
        {
          "Name": "Year",
          "ParameterKey": "Columns 1-2",
          "Description": "Last two digits of the year",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Month",
          "ParameterKey": "Columns 3-4",
          "Description": "Month (1-12)",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Day",
          "ParameterKey": "Columns 5-6",
          "Description": "Day (1-31)",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Bartels Rotation",
          "ParameterKey": "Columns 7-10",
          "Description": "Bartels solar rotation number - a sequence of 27-day intervals counted continuously from February 8, 1832",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Day within Bartels Rotation",
          "ParameterKey": "Columns 11-12",
          "Description": "Number of day within the Bartels 27-day cycle.",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Kp 0-3 UT",
          "ParameterKey": "Columns 13-14",
          "Description": "Kp (planetary) 3-hour index for 0-3 UT",
          "ValidMin": "0",
          "ValidMax": "9",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Kp 3-6 UT",
          "ParameterKey": "Columns 15-16",
          "Description": "Kp (planetary) 3-hour index for 3-6 UT",
          "ValidMin": "0",
          "ValidMax": "9",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Kp 6-9 UT",
          "ParameterKey": "Columns 17-18",
          "Description": "Kp (planetary) 3-hour index for 6-9 UT",
          "ValidMin": "0",
          "ValidMax": "9",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Kp 9-12 UT",
          "ParameterKey": "Columns 19-20",
          "Description": "Kp (planetary) 3-hour index for 9-12 UT",
          "ValidMin": "0",
          "ValidMax": "9",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Kp 12-15 UT",
          "ParameterKey": "Columns 21-22",
          "Description": "Kp (planetary) 3-hour index for 12-15 UT",
          "ValidMin": "0",
          "ValidMax": "9",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Kp 15-18 UT",
          "ParameterKey": "Columns 23-24",
          "Description": "Kp (planetary) 3-hour index for 15-18 UT",
          "ValidMin": "0",
          "ValidMax": "9",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Kp 18-21 UT",
          "ParameterKey": "Columns 25-26",
          "Description": "Kp (planetary) 3-hour index for 18-21 UT",
          "ValidMin": "0",
          "ValidMax": "9",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Kp 21-24 UT",
          "ParameterKey": "Columns 27-28",
          "Description": "Kp (planetary) 3-hour index for 21-24 UT",
          "ValidMin": "0",
          "ValidMax": "9",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Kp_sum",
          "ParameterKey": "Columns 29-31",
          "Description": "Daily Kp sum of the eight Kp indices for the day expressed to the nearest third of a unit",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Ap 0-3 UT",
          "ParameterKey": "Columns 32-34",
          "Description": "Ap (planetary) 3-hour equivalent amplitude for 0-3 UT",
          "Units": "nT",
          "ValidMin": "0",
          "ValidMax": "400",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Ap 3-6 UT",
          "ParameterKey": "Columns 35-37",
          "Description": "Ap (planetary) 3-hour equivalent amplitude for 3-6 UT",
          "Units": "nT",
          "ValidMin": "0",
          "ValidMax": "400",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Ap 6-9 UT",
          "ParameterKey": "Columns 38-40",
          "Description": "Ap (planetary) 3-hour equivalent amplitude for 6-9 UT",
          "Units": "nT",
          "ValidMin": "0",
          "ValidMax": "400",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Ap 9-12 UT",
          "ParameterKey": "Columns 41-43",
          "Description": "Ap (planetary) 3-hour equivalent amplitude for 9-12 UT",
          "Units": "nT",
          "ValidMin": "0",
          "ValidMax": "400",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Ap 12-15 UT",
          "ParameterKey": "Columns 44-46",
          "Description": "Ap (planetary) 3-hour equivalent amplitude for 12-15 UT",
          "Units": "nT",
          "ValidMin": "0",
          "ValidMax": "400",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Ap 15-18 UT",
          "ParameterKey": "Columns 47-49",
          "Description": "Ap (planetary) 3-hour equivalent amplitude for 15-18 UT",
          "Units": "nT",
          "ValidMin": "0",
          "ValidMax": "400",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Ap 18-21 UT",
          "ParameterKey": "Columns 50-52",
          "Description": "Ap (planetary) 3-hour equivalent amplitude for 18-21 UT",
          "Units": "nT",
          "ValidMin": "0",
          "ValidMax": "400",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Ap 21-24 UT",
          "ParameterKey": "Columns 53-55",
          "Description": "Ap (planetary) 3-hour equivalent amplitude for 21-24 UT",
          "Units": "nT",
          "ValidMin": "0",
          "ValidMax": "400",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Ap_daily",
          "ParameterKey": "Columns 56-58",
          "Description": "Ap (planetary) equivalent daily amplitude - the arithmentic mean of the day's eight Ap values.",
          "Units": "nT",
          "ValidMin": "0",
          "ValidMax": "400",
          "Support": {
            "Qualifier": "Average",
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Cp",
          "ParameterKey": "Columns 59-61",
          "Description": "Cp or Planetary Daily Character Figure - a qualitative estimate of overall level of magnetic activity for the day determined from the sum of the eight ap amplitudes. Cp ranges, in steps of one-tenth, from 0 (quiet) to 2.5 (highly disturbed).",
          "ValidMin": "0",
          "ValidMax": "2.5",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "C9",
          "ParameterKey": "Column 62",
          "Description": "C9 - a conversion of the 0-to-2.5 range of the Cp index to one digit between 0 and 9.",
          "ValidMin": "0",
          "ValidMax": "9",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Sunspot Number",
          "ParameterKey": "Columns 63-65",
          "Description": "International Sunspot Number.\n\nRecords contain\n\n* Zurich number through December 31, 1980\n* International Brussels number thereafter",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Ottawa Solar Radio Flux",
          "ParameterKey": "Columns 66-70",
          "Description": "Ottawa 10.7 cm Solar Radio Flux adjusted to 1 AU - measured at 1700 UT daily. Observations began on February 14, 1947. From that date through December 31, 1973, the fluxes given here do not reflect the revisions Ottawa made in 1966.",
          "Units": "10^-22 W/m^2/Hz",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Flux Qualifier",
          "ParameterKey": "Column 71",
          "Description": "Flux qualifier\n\n* 0: indicates flux required no adjustment\n* 1: indicates flux required adjustment for burst in progress at time of measurement\n* 2: indicates a flux approximated by either interpolation or extrapolation\n* 3: indicates no observation.",
          "Support": {
            "SupportQuantity": "Other"
          }
        }
      ]
    }
  }
}