{"wind_3dp_l3-eesa-low-sc-potential_00000000_v01.cdf":{"CDFFileInfo":[{"FileVersion":"3.9.1"},{"Format":"SINGLE"},{"Majority":"COLUMN"},{"Encoding":"ARM_LITTLE"},{"checksum":"NONE"},{"LeapsecondLastUpdated":"2017-01-01"}],"CDFglobalAttributes":[{"Project":[{"0":"ISTP>International Solar-Terrestrial Physics"}]},{"Discipline":[{"0":"Space Physics>Heliospheric Science"}]},{"Logical_source":[{"0":"wind_3dp_l3-eesa-low-sc-potential"}]},{"Logical_file_id":[{"0":" "}]},{"Source_name":[{"0":"WIND>Wind Interplanetary Plasma Laboratory"}]},{"Data_type":[{"0":"L3-EESA-LOW-SC-POTENTIAL>Spacecraft potential from 3DP EESA Low"}]},{"Descriptor":[{"0":"3DP>Three-Dimensional Plasma and Energetic particle investigation for the Wind spacecraft"}]},{"TITLE":[{"0":"Wind 3DP EESA Low Spacecraft Potential Database"}]},{"Mission_group":[{"0":"Wind"}]},{"Instrument_type":[{"0":"Particles (space)"}]},{"Logical_source_description":[{"0":"Wind 3DP EESA Low Level 3 Spacecraft Potential Data"}]},{"Instrument_PI_name":[{"0":"S.D. Bale"}]},{"Instrument_PI_affiliation":[{"0":"University of California Berkeley SSL"}]},{"Project_PI_name":[{"0":"L.B. Wilson III"}]},{"Project_PI_affiliation":[{"0":"NASA/GSFC"}]},{"PI_name":[{"0":"L.B. Wilson III"}]},{"PI_affiliation":[{"0":"NASA/GSFC"}]},{"Acknowledgement":[{"0":"We would like to thank the Wind/3DP and WAVES team for their support with data retrieval and calibration."}]},{"Rules_of_use":[{"0":"Please cite/reference the Wind review paper by L.B. Wilson et al., [2021] in Reviews of Geophysics and work by Wilson et al., [2023] in Astrophys. J. Suppl. when using this data.  There is also an erratum to the Wilson et al., [2023] ApJS, Wilson et al., [2026] ApJS, to which this data refers."}]},{"Extended_Description":[{"0":"This dataset contains spacecraft potential [eV] from the Wind/3DP EESA Low detector.  The dataset includes type labels for f(E) shape and solutions for four different methods used to determine phi_sc from f(E).  Please read the notes contained within these files and the documentation and description in Wilson et al., [2023] ApJS doi:10.3847/1538-4365/ad0633.  Please also see the erratum to Wilson et al., [2023] ApJS in Wilson et al., [2026] ApJS doi:10.3847/1538-4365/aea40c."}]},{"def_FLAGS":[{"0":"TYPE_LABEL = C1 or C2 - Bad   :  (see notes in TEXT)"},{"2":"TYPE_LABEL = B_ - Good  :  (see notes in TEXT)"},{"4":"TYPE_LABEL = A_ - Best  :  (see notes in TEXT)"}]},{"TEXT":[{"0":"Spacecraft floating potential database from the Wind 3DP EESA Low velocity distribution functions (VDFs)"},{"1":"TYPE_LABEL = A_ then the spacecraft potential is most reliable"},{"2":"TYPE_LABEL = B_ is the second most reliable type label"},{"3":"TYPE_LABEL = C1 is not reliable and should not be used"},{"4":"TYPE_LABEL = C2 is not reliable and should not be used"},{"5":"SCP_MINF is the easiest and often most reliable estimate for the spacecraft potential"}]},{"Data_version":[{"0":" "}]},{"File_naming_convention":[{"0":"source_descriptor_datatype_yyyyMMdd"}]},{"LINK_TEXT":[{"0":"Spacecraft potential measurements described in"}]},{"LINK_TITLE":[{"0":"Wilson et al. [2026] ApJS"}]},{"HTTP_LINK":[{"0":"https://doi.org/10.3847/1538-4365/aea40c"}]}],"CDFVariables":[{"EPOCH":[{"VarDescription":[{"DataType":"CDF_TIME_TT2000"},{"NumElements":1},{"NumDims":0},{"RecVariance":"VARY"},{"PadValue":"9999-12-31T23:59:59.999999999"}]},{"VarAttributes":[{"FIELDNAM":"Epoch"},{"VALIDMIN":"1994-11-01T23:59:59.999999999"},{"VALIDMAX":"2050-01-01T00:00:00.000000000"},{"UNITS":"ns"},{"LABLAXIS":"Epoch"},{"FORMAT":"I22"},{"SCALETYP":"LINEAR"},{"CATDESC":"Epoch (TT2000) time for each data point"},{"FILLVAL":"9999-12-31T23:59:59.999999999"},{"VAR_TYPE":"support_data"},{"VAR_NOTES":"Epoch times are the mid-point time of each 3DP EL VDF"},{"TIME_BASE":"J2000"},{"TIME_SCALE":"Terrestrial Time"}]}]},{"Q_FLAG":[{"VarDescription":[{"DataType":"CDF_INT4"},{"NumElements":1},{"NumDims":0},{"RecVariance":"VARY"},{"PadValue":-1}]},{"VarAttributes":[{"FIELDNAM":"Quality Flag"},{"VALIDMIN":0},{"VALIDMAX":4},{"UNITS":"4=Best,2=Good,0=Bad"},{"LABLAXIS":"Quality Flag"},{"FORMAT":"I8"},{"SCALETYP":"LINEAR"},{"CATDESC":"Quality Flag of VDF shape [4=Best, 2=Good, 0=Bad]"},{"FILLVAL":-1},{"DEPEND_0":"EPOCH"},{"VAR_TYPE":"data"},{"VAR_NOTES":"Quality flag of electron VDF shape [4 :  TYPE_LABEL = A_ = best; 2 :  TYPE_LABEL = B_ = Good; 0 :  TYPE_LABEL = C1 or C2 = Bad]"},{"DISPLAY_TYPE":"time_series>scatter"}]}]},{"SCP_PCUR":[{"VarDescription":[{"DataType":"CDF_DOUBLE"},{"NumElements":1},{"NumDims":1},{"DimSizes":[2]},{"RecVariance":"VARY"},{"DimVariances":["VARY"]},{"PadValue":-1.0E+31}]},{"VarAttributes":[{"FIELDNAM":"phi_sc from positive curvature"},{"VALIDMIN":3.0},{"VALIDMAX":30.0},{"UNITS":"eV"},{"LABLAXIS":"phi_sc [Pos. Curv.]"},{"FORMAT":"E14.6"},{"SCALETYP":"LINEAR"},{"CATDESC":"The lower and upper bound of the spacecraft potential from positive curvature of f(E)"},{"FILLVAL":-1.0E+31},{"DEPEND_0":"EPOCH"},{"VAR_TYPE":"data"},{"VAR_NOTES":"Spacecraft potential [eV] at the time of each 3DP VDF from the positive curvature of the 1D energy distribution, f(E)"},{"DISPLAY_TYPE":"time_series>scatter"},{"LABL_PTR_1":"PCUR_LAB"}]}]},{"SCP_INFL":[{"VarDescription":[{"DataType":"CDF_DOUBLE"},{"NumElements":1},{"NumDims":1},{"DimSizes":[2]},{"RecVariance":"VARY"},{"DimVariances":["VARY"]},{"PadValue":-1.0E+31}]},{"VarAttributes":[{"FIELDNAM":"phi_sc from inflection point"},{"VALIDMIN":3.0},{"VALIDMAX":30.0},{"UNITS":"eV"},{"LABLAXIS":"phi_sc [Infl. Point]"},{"FORMAT":"E14.6"},{"SCALETYP":"LINEAR"},{"CATDESC":"The lower and upper bound of the spacecraft potential from the point where df/dE changes from negative to positive"},{"FILLVAL":-1.0E+31},{"DEPEND_0":"EPOCH"},{"VAR_TYPE":"data"},{"VAR_NOTES":"Spacecraft potential [eV] at the time of each 3DP VDF from the point where df/dE changes from negative to positive"},{"DISPLAY_TYPE":"time_series>scatter"},{"LABL_PTR_1":"INFL_LAB"}]}]},{"SCP_MNXC":[{"VarDescription":[{"DataType":"CDF_DOUBLE"},{"NumElements":1},{"NumDims":1},{"DimSizes":[2]},{"RecVariance":"VARY"},{"DimVariances":["VARY"]},{"PadValue":-1.0E+31}]},{"VarAttributes":[{"FIELDNAM":"phi_sc from minimum and maximum of the curvature"},{"VALIDMIN":3.0},{"VALIDMAX":30.0},{"UNITS":"eV"},{"LABLAXIS":"phi_sc [Min/Max Curv.]"},{"FORMAT":"E14.6"},{"SCALETYP":"LINEAR"},{"CATDESC":"The lower and upper bound of the spacecraft potential from the minimum and maximum of the curvature of f(E)"},{"FILLVAL":-1.0E+31},{"DEPEND_0":"EPOCH"},{"VAR_TYPE":"data"},{"VAR_NOTES":"Spacecraft potential [eV] at the time of each 3DP VDF from the minimum and maximum of the curvature of f(E)"},{"DISPLAY_TYPE":"time_series>scatter"},{"LABL_PTR_1":"MNXC_LAB"}]}]},{"SCP_MINF":[{"VarDescription":[{"DataType":"CDF_DOUBLE"},{"NumElements":1},{"NumDims":0},{"RecVariance":"VARY"},{"PadValue":-1.0E+31}]},{"VarAttributes":[{"FIELDNAM":"phi_sc from local minimum in f(E)"},{"VALIDMIN":3.0},{"VALIDMAX":30.0},{"UNITS":"eV"},{"LABLAXIS":"phi_sc [Min f(E)]"},{"FORMAT":"E14.6"},{"SCALETYP":"LINEAR"},{"CATDESC":"Spacecraft potential defining the lower and upper bound from the local minimum in f(E)"},{"FILLVAL":-1.0E+31},{"DEPEND_0":"EPOCH"},{"VAR_TYPE":"data"},{"VAR_NOTES":"Spacecraft potential [eV] at the time of each 3DP VDF from the local minimum in f(E) often seen as a kink-like feature"},{"DISPLAY_TYPE":"time_series>scatter"}]}]},{"TYPE_LABEL":[{"VarDescription":[{"DataType":"CDF_CHAR"},{"NumElements":2},{"NumDims":0},{"RecVariance":"VARY"},{"PadValue":"__"}]},{"VarAttributes":[{"FIELDNAM":"type label defining the shape of f(E)"},{"FORMAT":"A2"},{"CATDESC":"Type Label defining the shape of f(E):  A_ = Best, B_ = Good, C1 or C2 = Bad [Wilson et al., 2023]"},{"FILLVAL":"__"},{"DEPEND_0":"EPOCH"},{"VAR_TYPE":"metadata"},{"VAR_NOTES":"The type labels are defined in Wilson et al., [2023]"}]}]},{"PCUR_LAB":[{"VarDescription":[{"DataType":"CDF_CHAR"},{"NumElements":19},{"NumDims":1},{"DimSizes":[2]},{"RecVariance":"NOVARY"},{"DimVariances":["VARY"]},{"NumWrittenRecords":1},{"PadValue":" "},{"BlockingFactor":1}]},{"VarAttributes":[{"FIELDNAM":"label for SCP_PCUR"},{"FORMAT":"A19"},{"CATDESC":"Label for lower and upper bound on spacecraft potential"},{"VAR_TYPE":"metadata"}]},{"VarData":["low    [Pos. Curv.]","upp    [Pos. Curv.]"]}]},{"INFL_LAB":[{"VarDescription":[{"DataType":"CDF_CHAR"},{"NumElements":19},{"NumDims":1},{"DimSizes":[2]},{"RecVariance":"NOVARY"},{"DimVariances":["VARY"]},{"NumWrittenRecords":1},{"PadValue":" "},{"BlockingFactor":1}]},{"VarAttributes":[{"FIELDNAM":"label for SCP_INFL"},{"FORMAT":"A19"},{"CATDESC":"Label for lower and upper bound on spacecraft potential"},{"VAR_TYPE":"metadata"}]},{"VarData":["low   [Infl. Point]","upp   [Infl. Point]"]}]},{"MNXC_LAB":[{"VarDescription":[{"DataType":"CDF_CHAR"},{"NumElements":19},{"NumDims":1},{"DimSizes":[2]},{"RecVariance":"NOVARY"},{"DimVariances":["VARY"]},{"NumWrittenRecords":1},{"PadValue":" "},{"BlockingFactor":1}]},{"VarAttributes":[{"FIELDNAM":"label for SCP_MNXC"},{"FORMAT":"A19"},{"CATDESC":"Label for lower and upper bound on spacecraft potential"},{"VAR_TYPE":"metadata"}]},{"VarData":["low [Min/Max Curv.]","upp [Min/Max Curv.]"]}]}],"EmptyAttributes":[{"VariableAttributes":["DEPEND_1"]}]}}