{
  "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_3_2.xsd",
    "Version": "2.3.2",
    "NumericalData": {
      "ResourceID": "spase://NASA/NumericalData/RBSP/B/EFW/L3/PT11S",
      "ResourceHeader": {
        "ResourceName": "Van Allen Probe B Electric Fields and Waves (EFW) Spin-fit Electric field in modified-GSE (MGSE) coord, density, and other products",
        "ReleaseDate": "2021-04-27T15:38:11Z",
        "Description": "This data set contains Level 3 wave electric field and search coil wave magnetic fields data from the Electric Field and Waves Suite (EFW) onboard Van Allen Probe A. The spin-fit electric field (spin period resolution) tends to be the most accurate electric field measurement. However, as always, due diligence by the user/scientists must be exercised in using these data. The spin-fit electric field is provided in both an inertial and co-rotating frame. The electric field is presented in a MGSE (modified GSE) coordinate system. We provide two components (Y MGSE and Z MGSE) of the electric field. Both components are in the spin plane of the spacecraft and are measured with the long 50 m booms. The X MGSE component is along the spin-axis. The spin-axis of the spacecraft is oriented within 37 degrees of the Earth sun line. So the Y GSE direction is most nearly aligned with the Y MGSE axis and the Z MGSE direction is most nearly aligned with Z GSE.",
        "Acknowledgement": "NASA Space Physics Data Facility (SPDF) CDAWeb. The work by the EFW team was conducted under JHU/APL contract 922613 (RBSP-EFW)",
        "Contact": [
          {
            "PersonID": "spase://SMWG/Person/John.R.Wygant",
            "Role": "PrincipalInvestigator"
          },
          {
            "PersonID": "spase://SMWG/Person/Robert.E.McGuire",
            "Role": "GeneralContact"
          }
        ],
        "InformationURL": [
          {
            "Name": "EFW home page at the University of Minnesota",
            "URL": "http://www.space.umn.edu/rbspefw-data-policy-the-rules-of-the-road/",
            "Description": "EFW Data Required Reading"
          },
          {
            "Name": "The Van Allen Probes Home Page",
            "URL": "http://vanallenprobes.jhuapl.edu",
            "Description": "Science Gateway (including Mission Rules of the Road for Data Usage)"
          }
        ],
        "PriorID": [
          "spase://VWO/NumericalData/RBSP/B/EFW/L3/PT11S",
          "spase://VSPO/NumericalData/RBSP/B/EFW/L3/PT11S"
        ]
      },
      "AccessInformation": [
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "AccessURL": [
            {
              "Name": "FTPS from SPDF (not with most browsers)",
              "URL": "ftps://spdf.gsfc.nasa.gov/pub/data/rbsp/rbspb/l3/efw/",
              "Description": "In CDF via ftp from CDAWeb"
            },
            {
              "Name": "HTTPS from SPDF",
              "URL": "https://spdf.gsfc.nasa.gov/pub/data/rbsp/rbspb/l3/efw/",
              "Description": "In CDF via HTTP from SPDF"
            }
          ],
          "Format": "CDF",
          "Acknowledgement": "Please acknowledge the PI and the CDAWeb team at GSFC/SPDF."
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "AccessURL": {
            "Name": "CDAWeb",
            "URL": "https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=RBSPB_EFW-L3&index=sp_phys",
            "ProductKey": "RBSPB_EFW-L3"
          },
          "Format": "Text"
        },
        {
          "RepositoryID": "spase://SMWG/Repository/NASA/GSFC/SPDF",
          "Availability": "Online",
          "AccessRights": "Open",
          "AccessURL": {
            "Name": "CDAWeb HAPI Server",
            "URL": "https://cdaweb.gsfc.nasa.gov/hapi",
            "Style": "HAPI",
            "ProductKey": "RBSPB_EFW-L3",
            "Description": "Web Service to this product using the HAPI interface."
          },
          "Format": "CSV"
        }
      ],
      "InstrumentID": "spase://SMWG/Instrument/RBSP/B/EFW",
      "MeasurementType": [
        "ElectricField",
        "Waves"
      ],
      "TemporalDescription": {
        "TimeSpan": {
          "StartDate": "2012-09-18T00:00:06.000Z",
          "StopDate": "2019-10-18T16:30:00Z"
        },
        "Cadence": "PT11S"
      },
      "Parameter": [
        {
          "Name": "Time, UTC",
          "ParameterKey": "epoch",
          "Description": "Time tags for the data quantities",
          "Units": "UTC",
          "Support": {
            "SupportQuantity": "Temporal"
          }
        },
        {
          "Name": "Density estimation from sc potential",
          "ParameterKey": "density",
          "Description": "Density estimation from sc potential, determined from the form density = A1*exp(b*x)+A2*exp(c*x), where x=(V1 + V2)/2, where the constants are found by comparison to upper hybrid line from EMFISIS. The fit is updated approximately monthly. For a more accurate density (or verification) for a specific time period contact the EFW team. Values below 10cm-3 and above 3000 cm-3 are untrustworthy and are removed",
          "Units": "cm-3",
          "Particle": {
            "ParticleType": "Electron",
            "ParticleQuantity": "NumberDensity"
          }
        },
        {
          "Name": "EFW Global Data Quality",
          "ParameterKey": "flag_global",
          "Description": "0=OK",
          "Structure": {
            "Size": "20"
          },
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "EFW Data Quality Flags",
          "ParameterKey": "flags_all",
          "Description": "The quality of EFW data products can be affected by a variety of observatory and instrument-level conditions. efw_qual is a collection of flags that show the estimate of each of these contributors over time. ..See the EFW-FAQ (http://www.space.umn.edu/rbspefw-data-policy-the-rules-of-the-road/) for a detailed description of the determination and meaning of each of the elements of efw_qual...If the value of a particular element of efw_qual is not relevant to the quality of a particular data product, it shall receive the value -2...If the value of a particular element of efw_qual is relevant to the quality of a particular data product but is not known at the time lf L2 data production, it shall receive the value -1...A quality value of 0 indicates that there are no known issues with the data product due to that particular element of efw_qual...The quality values are meant to be conservative, and values other than 0 should lead the user back to a member of the EFW instrument team for discussion and advice on the nature of the data quality as needed.",
          "Structure": {
            "Size": "20"
          },
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Charging, Bias and Eclipse flags",
          "ParameterKey": "flags_charging_bias_eclipse",
          "Description": "For Spacecraft Charging Issues see http://www.space.umn.edu/rbspefw-data-policy-the-rules-of-the-road/",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "Ein - Inertial frame spinfit electric field in MGSE coord system",
          "ParameterKey": "efield_inertial_frame_mgse",
          "Description": "Inertial frame spinfit electric field in MGSE coord system. Derived from the V1 and V2 spinplane booms. The Vsc x B field is subtracted off, where Vsc is the spacecraft velocity and B is the measured ambient magnetic field",
          "Units": "mV/m",
          "Structure": {
            "Size": "3"
          },
          "Field": {
            "FieldQuantity": "Electric"
          }
        },
        {
          "Name": "Eco - Corotation frame spinfit electric field in MGSE coord system",
          "ParameterKey": "efield_corotation_frame_mgse",
          "Description": "Corotation frame spinfit electric field in MGSE coord system. Derived from the V1 and V2 spinplane booms. The Vsc x B field is subtracted off, where Vsc is the spacecraft velocity and B is the measured ambient magnetic field",
          "Units": "mV/m",
          "Structure": {
            "Size": "3"
          },
          "Field": {
            "FieldQuantity": "Electric"
          }
        },
        {
          "Name": "Vco x B - Corotation vxB Efield in MGSE coord.",
          "ParameterKey": "VcoroxB_mgse",
          "Description": "Corotation Efield calculated from Omega x R x B in MGSE coord. Omega is the Earth's spin axis vector and R is the vector from the Earth's center to the satellite",
          "Units": "mV/m",
          "Structure": {
            "Size": "3"
          },
          "Field": {
            "FieldQuantity": "Electric"
          }
        },
        {
          "Name": "Vsc x B - Spacecraft vxB Efield calculated in MGSE coord.",
          "ParameterKey": "VscxB_mgse",
          "Description": "Vsc x B in MGSE coord, where Vsc is the spacecraft velocity and B is the DC magnetic field",
          "Units": "mV/m",
          "Structure": {
            "Size": "3"
          },
          "Field": {
            "FieldQuantity": "Electric"
          }
        },
        {
          "Name": "GSE position (km) from SPICE",
          "ParameterKey": "pos_gse",
          "Description": "GSE position (km) from SPICE",
          "Units": "km",
          "Structure": {
            "Size": "3"
          },
          "Support": {
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "GSE velocity in km/s from SPICE",
          "ParameterKey": "vel_gse",
          "Description": "GSE position (km) from SPICE",
          "Units": "km/s",
          "Structure": {
            "Size": "3"
          },
          "Support": {
            "SupportQuantity": "Velocity"
          }
        },
        {
          "Name": "Spinaxis unit vector in GSE coord",
          "ParameterKey": "spinaxis_gse",
          "Description": "Spinaxis unit vector in GSE coord",
          "Structure": {
            "Size": "3"
          },
          "Support": {
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Vavg - SCpot (neg) as average of opposing boom potentials (V1+V2)/2 and a proxy for plasma density.",
          "ParameterKey": "Vavg",
          "Description": "Average of opposing boom potentials (V1+V2)/2. This is a proxy for plasma density. Positive excursions can indicate negative spacecraft charging.",
          "Units": "volts",
          "Field": {
            "FieldQuantity": "Potential"
          }
        },
        {
          "Name": "MLT, Lshell and Mlat",
          "ParameterKey": "mlt_lshell_mlat",
          "Description": "MLT, Lshell and Mlat",
          "Structure": {
            "Size": "3"
          },
          "Support": {
            "SupportQuantity": "Positional"
          }
        },
        {
          "Name": "Nominal Sensor Saturation Voltage (V)",
          "ParameterKey": "vsvy_maxval",
          "Description": "The maximum magnitude of the sensor potential relative to SC potential at which the sensor preamp likely to be saturated during nominal biasing conditions..If the magnitude of a given sensor potential exceeds vsvy_maxval then the corresponding element of efw_qua.l (v1_saturation .. v6-saturation) shall be set to indicate that state. vsvy_maxval is set in the L1>L2 processing scripts, and shall be copied into this variable during L2 CDF creation.",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "EFW_QUAL_NR",
          "ParameterKey": "EFW_QUAL_NR",
          "Description": "EFW_QUAL_NR is the value (typ. -2) an element of efw_qual takes when the criterion represented by that element is not relevant for the given data product.",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "EFW_QUAL_GOOD",
          "ParameterKey": "EFW_QUAL_GOOD",
          "Description": "EFW_QUAL_GOOD is the value (0) of an element of efw_qual that indicates good data.",
          "Support": {
            "SupportQuantity": "Other"
          }
        },
        {
          "Name": "EFW_QUAL_UNK",
          "ParameterKey": "EFW_QUAL_UNK",
          "Description": "EFW_QUAL_UNK is the value (typ. -1) an element of efw_qual that indicates the quality is unknown.",
          "Support": {
            "SupportQuantity": "Other"
          }
        }
      ]
    }
  }
}