{
  "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_1.xsd",
    "_Note": "Nodes prefixed with a _ are not valid SPASE, but are included for debugging. Values prefixed with a x_ are not valid SPASE but may considered for addition for completeness.",
    "Version": "2.6.1",
    "_MasterURL": "https://cdaweb.gsfc.nasa.gov/pub/software/cdawlib/0JSONS/ac_at_def_00000000_v01.json (from all.xml)",
    "NumericalData": {
      "ResourceID": "spase://NASA/NumericalData/ACE/Attitude/Definitive/PT1H",
      "_ResourceID": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json",
      "ResourceHeader": {
        "ResourceName": "ACE Hourly RTN, GSE and J2000 GCI Attitude direction cosines",
        "_ResourceName": "Source: Master/CDFglobalAttributes/Logical_source_description",
        "AlternateName": "AC_AT_DEF",
        "_AlternateName": "Source: Master/CDFglobalAttributes/Logical_source",
        "Description": "ACE attitude direction cosines (hourly values) in GSE and J2000 GCI coordinate systems",
        "_Description": "Source: Master/CDFglobalAttributes/TEXT",
        "Acknowledgement": [
          "Please acknowledge the Principal ",
          "Investigator, E. C. Stone of ",
          "Caltech, USA"
        ],
        "_Acknowledgement": "Source: Master/CDFglobalAttributes/Acknowledgement",
        "_Rights": {
          "Name": "SPDX",
          "Description": "Creative Commons Zero v1.0 Universal",
          "URL": "https://spdx.org/licenses/CC0-1.0.html",
          "SchemeURI": "https://spdx.org/licenses/"
        },
        "InformationURL": [
          {
            "Name": "ACE Attitude and Orbit Data Website",
            "URL": "https://izw1.caltech.edu/ACE/ASC/orbit.html",
            "Description": "ACE Attitude and Orbit Data Release Notes and Information",
            "_Note": "URL also in all.xml, master. Using InformationURL.json."
          },
          {
            "Name": "Satellite Situation Center, SSCWeb, System and Services",
            "URL": "https://sscweb.gsfc.nasa.gov",
            "Description": "The Satellite Situation Center Web, SSCWeb, Service has been developed and is operated jointly by the NASA/GSFC Space Physics Data Facility, SPDF, and the National Space Science Data Center, NSSDC, to support a Range of NASA Science Programs and to fulfill Key International NASA Responsibilities including those of NSSDC and the World Data Center-A for Rockets and Satellites. The Software and associated Database of SSCWeb together form a System to cast Geocentric Spacecraft Location Information into a Framework of Empirical Geophysical Regions and Mappings of Spacecraft Locations along Lines of the Earth's Magnetic Field. This Capability is one Key to Mission Science Planning, both Single Missions and Coordinated Observations of Multiple Spacecraft with Ground-Based Investigations, and to subsequent Multi-Mission Data Analysis.",
            "_Note": "Source: InformationURL.json"
          }
        ]
      },
      "ProviderResourceName": "ACE> Attitude Direction cosines",
      "Caveats": [
        "See the rules of use available from the ACE ",
        "Science Center at: ",
        "http://www.srl.caltech.edu/ACE/ASC/level2/policy_lvl2.html"
      ],
      "_Caveats": "Source: Master/CDFglobalAttributes/Rules_of_use",
      "DOI": "https://doi.org/10.48322/f2a8-nm36",
      "_DOI": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/DOI.json",
      "AccessInformation": [
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: E. C. Stone at California Institute of Technology",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "HTTPS from SPDF",
            "URL": "https://cdaweb.gsfc.nasa.gov/pub/data/ace/orbit/level_2_cdaweb/def_at",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "ac_at_def_%Y%m%d_%Q.cdf",
            "AccessDirectoryTemplate": "%Y",
            "ProductKey": "AC_AT_DEF"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: E. C. Stone at California Institute of Technology",
          "Format": [
            "CDF"
          ],
          "Style": "Listing",
          "AccessURL": {
            "Name": "FTPS from SPDF",
            "URL": "ftps://cdaweb.gsfc.nasa.gov/pub/data/ace/orbit/level_2_cdaweb/def_at",
            "Description": "In CDF via HTTP from CDAWeb",
            "AccessFilenameTemplate": "ac_at_def_%Y%m%d_%Q.cdf",
            "AccessDirectoryTemplate": "%Y",
            "ProductKey": "AC_AT_DEF"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: E. C. Stone at California Institute of Technology",
          "Format": [
            "CDF",
            "CSV",
            "GIF",
            "NetCDF",
            "PNG",
            "PS",
            "PDF",
            "XML",
            "x_Script.IDL",
            "x_Script.Python",
            "Text.ASCII",
            "x_WAV"
          ],
          "AccessURL": {
            "Name": "CDAWeb Web Service",
            "URL": "https://cdaweb.gsfc.nasa.gov/WebServices/",
            "Style": "WebService",
            "Description": "Instructions for using web services to access this dataset an other other metadata and options for CDAWeb datasets. The ProductKey here corresponds to the query parameter 'dataset' in the tables at the AccessURL in a dataset-related request can be made.",
            "ProductKey": "AC_AT_DEF"
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: E. C. Stone at California Institute of Technology",
          "Format": [
            "CDF",
            "GIF",
            "PDF",
            "Text.ASCII",
            "x_WAV"
          ],
          "AccessURL": {
            "Name": "CDAWeb Web Service user interface",
            "URL": "https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?index=sp_phys&dataset=AC_AT_DEF",
            "Style": "WebService",
            "ProductKey": "AC_AT_DEF",
            "Description": "Web service user interface for this product."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb. Please also acknowledge the data producer: E. C. Stone at California Institute of Technology",
          "Format": [
            "x_Script.IDL",
            "x_Script.Python"
          ],
          "AccessURL": {
            "Name": "CDAWeb Python Script",
            "URL": "https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/AC_AT_DEF/clientLibraryExample/",
            "ProductKey": "AC_AT_DEF",
            "Style": "WebService",
            "Description": "Web service that generates a Python script to access this product."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/SSCWeb. Please also acknowledge the data producer: E. C. Stone at California Institute of Technology",
          "Format": [
            "HTML"
          ],
          "AccessURL": {
            "Name": "4D Orbit Viewer",
            "URL": "https://sscweb.gsfc.nasa.gov/4dorbit/?sc=AC_AT_DEF",
            "ProductKey": "AC_AT_DEF",
            "Style": "x_Visualization",
            "Description": "Web Service to this product."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: E. C. Stone at California Institute of Technology",
          "Format": [
            "CSV",
            "JSON",
            "Binary"
          ],
          "AccessURL": {
            "Name": "CDAWeb HAPI Server",
            "URL": "https://hapi-server.org/servers/#server=CDAWeb&dataset=AC_AT_DEF",
            "Style": "HAPI",
            "ProductKey": "AC_AT_DEF",
            "Description": "Web Service to this product using the HAPI interface."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: E. C. Stone at California Institute of Technology",
          "Format": [
            "x_Script.IDL",
            "x_Script.Javascript",
            "x_Script.MATLAB",
            "x_Script.Python",
            "x_Script.Autoplot",
            "x_Script.curl",
            "x_Script.wget"
          ],
          "AccessURL": {
            "Name": "CDAWeb HAPI Script in Multiple Languages",
            "URL": "https://hapi-server.org/servers/#server=CDAWeb&dataset=AC_AT_DEF&return=script",
            "Style": "HAPI",
            "ProductKey": "AC_AT_DEF",
            "Description": "Web Service user interface that generates scripts in IDL, Javascript, MATLAB, Python, Autoplot, curl, wget to access this product. See https://hapi-server.org/servers/api for the API."
          }
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "Acknowledgement": "SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: E. C. Stone at California Institute of Technology",
          "Format": [
            "PNG",
            "PDF",
            "SVG"
          ],
          "AccessURL": {
            "Name": "HAPI visualizations",
            "URL": "https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&dataset=AC_AT_DEF&format=gallery",
            "Style": "x_Visualization",
            "ProductKey": "AC_AT_DEF",
            "Description": "Web Service that generates plots. See https://hapi-server.org/plot/ for the API."
          }
        }
      ],
      "_AccessInformation": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/AccessInformation.json",
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "1997-08-26T00:00:00Z",
          "StopDate": "2026-07-21T14:00:00Z"
        },
        "_TemporalDescription": "Generated from all.xml/@timerange_start and all.xml/@timerange_stop",
        "Cadence": "PT1H",
        "_Cadence": "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/ace/orbit/level_2_cdaweb/def_at/1997/ac_at_def_19970826_v01.cdf. The most common cadence, 3600000 [ms] = PT1H, occurred for all 3071 timesteps."
      },
      "Keyword": [
        "Advanced Composition Explorer (from all.xml/observatory/description/@short)",
        "Definitive Data (from all.xml/instrument/description/@short)",
        "Space Physics (from Master/CDFglobalAttributes/Discipline)",
        "Interplanetary Studies (from Master/CDFglobalAttributes/Discipline)",
        "AC (from Master/CDFglobalAttributes/Source_name)",
        "Advanced Composition Explorer (from Master/CDFglobalAttributes/Source_name)",
        "AT (from Master/CDFglobalAttributes/Data_type)",
        "Attitude (from Master/CDFglobalAttributes/Data_type)",
        "DEF (from all.xml/instrument/@ID)"
      ],
      "ObservedRegion": [
        "Heliosphere.Inner",
        "Heliosphere.NearEarth",
        "Heliosphere"
      ],
      "_ObservedRegion": "Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ObservedRegion.json",
      "ProcessingLevel": null,
      "_ProcessingLevel": "Processing level is not available in the master file; it should be there instead of, say, https://github.com/rweigel/cdawmeta-spase/blob/main/ProcessingLevel.json",
      "InstrumentID": "spase://SMWG/Instrument/ACE/Ephemeris",
      "MeasurementType": "Ephemeris",
      "Parameter2": [
        {
          "Name": "Time",
          "ParameterKey": "Epoch",
          "Description": "CATDESC: 'Time, beginning of interval'. Notes not in Master CDF: 'The units are the units in CDF files. For other web services, this variable is may be represented as a time string.'",
          "Units": "ms",
          "Support": {
            "Qualifier": "Scalar",
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "S/C attitude in RTN",
          "ParameterKey": "RTN_ATT",
          "Description": "Master CDF CATDESC: 'ACE s/c attitude, direction cosines in RTN coord.'. Master CDF VAR_NOTES: 'ACE s/c attitude, direction cosines in RTN coord.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3
            ]
          }
        },
        {
          "Name": "S/C attitude in J2000 GCI",
          "ParameterKey": "GCI_ATT",
          "Description": "Master CDF CATDESC: 'ACE s/c attitude, direction cosines in J2000 GCI coord.'. Master CDF VAR_NOTES: 'ACE s/c attitude, direction cosines in J2000 GCI coord.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3
            ]
          }
        },
        {
          "Name": "S/C attitude in GSE",
          "ParameterKey": "GSE_ATT",
          "Description": "Master CDF CATDESC: 'ACE s/c attitude, direction cosines in GSE coord.'. Master CDF VAR_NOTES: 'ACE s/c attitude, direction cosines in GSE coord.'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is Epoch.'",
          "Units": " ",
          "FillValue": -1e+31,
          "Structure": {
            "Size": [
              3
            ]
          }
        }
      ]
    }
  }
}