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  <NumericalData>
    <ResourceID>spase://NASA/NumericalData/RBSP/B/EMFISIS/WFR/L4/ElectronDensity/PT0.5S</ResourceID>
    <ResourceHeader>
      <ResourceName>Van Allen Probe B Electric and Magnetic Field Instrument Suite and Integrated Science (EMFISIS) Density and other Parameters derived by digitizing Traces on Spectrograms, Level 4 (L4), 0.5 s Data</ResourceName>
      <ReleaseDate>2021-04-27T15:38:11Z</ReleaseDate>
      <Description>Van Allen Probe B, Electric and Magnetic Field Instrument Suite and Integrated Science, EMFISIS, derived Density and other Parameters inferred by digitizing Traces on Spectrograms. The EMFISIS Waves Instrument provides a Measure of the Frequency of the Upper Hybrid Resonance Band thereby providing an accurate Determination of the Electron Density. The Electron Density is most easily and accurately measured by Means of Resonances and Cutoffs in the Wave Spectrum rather than Particle Detector Measurements which are subject to Spacecraft Charging and other complicating Factors.</Description>
      <Acknowledgement>C.A. Kletzing</Acknowledgement>
      <Contact>
        <PersonID>spase://SMWG/Person/Craig.A.Kletzing</PersonID>
        <Role>PrincipalInvestigator</Role>
      </Contact>
      <Contact>
        <PersonID>spase://SMWG/Person/Robert.E.McGuire</PersonID>
        <Role>MetadataContact</Role>
      </Contact>
      <Contact>
        <PersonID>spase://SMWG/Person/Lee.Frost.Bargatze</PersonID>
        <Role>MetadataContact</Role>
      </Contact>
      <InformationURL>
        <Name>Van Allen Probes Home Page, JHU/APL</Name>
        <URL>http://vanallenprobes.jhuapl.edu</URL>
        <Description>Van Allen Probes Home Page, Exploring Earth's Radiation Belts and the Extremes of Space Weather, Applied Physics Laboratory, Johns Hopkins University</Description>
      </InformationURL>
      <InformationURL>
        <Name>Van Allen Probes Science Gateway for access to Data, Models, Software and Tools for Researchers, Students and the General Public, JHU/APL</Name>
        <URL>http://rbspgway.jhuapl.edu/</URL>
        <Description>Van Allen Probes Science Gateway for access to Data, Models, Software and Tools for Researchers, Students and the General Public at the Applied Physics Laboratory, Johns Hopkins University</Description>
      </InformationURL>
      <InformationURL>
        <Name>Van Allen Probes Science Gateway, Mission Rules of the Road for Data Usage, JHU/APL</Name>
        <URL>http://rbspgway.jhuapl.edu/data_policy</URL>
        <Description>Van Allen Probes Science Gateway, Mission Rules of the Road for Data Usage, Applied Physics Laboratory at the Applied Physics Laboratory, Johns Hopkins University</Description>
      </InformationURL>
      <InformationURL>
        <Name>Van Allen Probes EMFISIS Home Page, UI</Name>
        <URL>http://emfisis.physics.uiowa.edu</URL>
        <Description>Van Allen Probes Electric and Magnetic Field Instrument Suite and Integrated Science, EMFISIS, Home Page at the University of Iowa</Description>
      </InformationURL>
      <InformationURL>
        <Name>Van Allen Probes EMFISIS Web Page with Mission and Instrument Team Links, UI</Name>
        <URL>http://emfisis.physics.uiowa.edu/about/instrument</URL>
        <Description>Van Allen Probes Electric and Magnetic Field Instrument Suite and Integrated Science, EMFISIS, Web Page with Mission and Instrument Team Links at the University of Iowa</Description>
      </InformationURL>
      <InformationURL>
        <Name>Van Allen Probes EMFISIS Data Access, UI</Name>
        <URL>http://emfisis.physics.uiowa.edu/data/index</URL>
        <Description>Van Allen Probes Electric and Magnetic Field Instrument Suite and Integrated Science, EMFISIS, Data Access including advanced Autoplot Graphics with Links to the Data Use Policy and Magnetometer Release Notes at the University of Iowa</Description>
      </InformationURL>
      <PriorID>spase://VSPO/NumericalData/RBSP/B/EMFISIS/WFR/L4/Density/ElectronDensity</PriorID>
      <PriorID>spase://VSPO/NumericalData/RBSP/B/EMFISIS/WaveformReceiver/ElectronDensity/Level4</PriorID>
      <PriorID>spase://VSPO/NumericalData/RBSP/B/EMFISIS/WFR/L4/ElectronDensity/PT0.5S</PriorID>
    </ResourceHeader>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <AccessURL>
        <Name>FTPS from SPDF (not with most browsers)</Name>
        <URL>ftps://spdf.gsfc.nasa.gov/pub/data/rbsp/rbspb/l4/emfisis/density/</URL>
        <Description>Access to Data in CDF Format via ftp from SPDF</Description>
      </AccessURL>
      <AccessURL>
        <Name>HTTPS from SPDF</Name>
        <URL>https://spdf.gsfc.nasa.gov/pub/data/rbsp/rbspb/l4/emfisis/density/</URL>
        <Description>Access to Data in CDF Format via http from SPDF</Description>
      </AccessURL>
      <AccessURL>
        <Name>CDAWeb</Name>
        <URL>https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=RBSP-B_DENSITY_EMFISIS-L4&amp;index=sp_phys</URL>
        <ProductKey>RBSP-B_DENSITY_EMFISIS-L4</ProductKey>
        <Description>Access to ASCII, CDF, and Plots via NASA/GSFC CDAWeb</Description>
      </AccessURL>
      <Format>CDF</Format>
      <Encoding>None</Encoding>
      <Acknowledgement>C.A. Kletzing. Please acknowledge the Data Providers and CDAWeb when using these Data.</Acknowledgement>
    </AccessInformation>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <AccessURL>
        <Name>CDAWeb HAPI Server</Name>
        <URL>https://cdaweb.gsfc.nasa.gov/hapi</URL>
        <Style>HAPI</Style>
        <ProductKey>RBSP-B_DENSITY_EMFISIS-L4</ProductKey>
        <Description>Web Service to this product using the HAPI interface.</Description>
      </AccessURL>
      <Format>CSV</Format>
      <Acknowledgement>C.A. Kletzing. Please acknowledge the Data Providers and CDAWeb when using these Data.</Acknowledgement>
    </AccessInformation>
    <ProcessingLevel>Calibrated</ProcessingLevel>
    <InstrumentID>spase://SMWG/Instrument/RBSP/B/EMFISIS</InstrumentID>
    <MeasurementType>MagneticField</MeasurementType>
    <MeasurementType>ThermalPlasma</MeasurementType>
    <MeasurementType>Waves.Passive</MeasurementType>
    <TemporalDescription>
      <TimeSpan>
        <StartDate>2012-09-28T04:59:40.000</StartDate>
        <StopDate>2015-07-01T04:09:03.000</StopDate>
      </TimeSpan>
      <Cadence>PT0.5S</Cadence>
    </TemporalDescription>
    <ObservedRegion>Earth.Magnetosphere</ObservedRegion>
    <ObservedRegion>Earth.Magnetosphere.Main</ObservedRegion>
    <ObservedRegion>Earth.Magnetosphere.RadiationBelt</ObservedRegion>
    <ObservedRegion>Earth.NearSurface.EquatorialRegion</ObservedRegion>
    <Parameter>
      <Name>Epoch Time</Name>
      <ParameterKey>Epoch</ParameterKey>
      <Description>Epoch Time, Default</Description>
      <Caveats>This Parameter exhibits an increasing Monotonic Progression.</Caveats>
      <Cadence>PT0.5S</Cadence>
      <Units>ns</Units>
      <UnitsConversion>1.0e-9&gt;s</UnitsConversion>
      <RenderingHints>
        <AxisLabel>Time</AxisLabel>
        <ScaleType>LinearScale</ScaleType>
      </RenderingHints>
      <ValidMin>1990-01-01T00:00:00.000000000</ValidMin>
      <ValidMax>2029-12-31T23:59:58.999000000</ValidMax>
      <FillValue>9999-12-31T23:59:59.999999999</FillValue>
      <Support>
        <Qualifier>Scalar</Qualifier>
        <SupportQuantity>Temporal</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>Digitized Frequency Point</Name>
      <Set>Time Series defined by using: EPOCH</Set>
      <ParameterKey>y</ParameterKey>
      <Description>Digitized Frequency Point, interpreted by using the Value of the Digitization Parameter, digi_type</Description>
      <Cadence>PT0.5S</Cadence>
      <Units>Hz</Units>
      <RenderingHints>
        <DisplayType>TimeSeries</DisplayType>
        <AxisLabel>Y</AxisLabel>
        <ValueFormat>F13.3</ValueFormat>
        <ScaleType>LogScale</ScaleType>
      </RenderingHints>
      <ValidMin>0.0</ValidMin>
      <ValidMax>1.0e+08</ValidMax>
      <FillValue>-1.0e+31</FillValue>
      <Wave>
        <WaveType>PlasmaWaves</WaveType>
        <Qualifier>Scalar</Qualifier>
        <WaveQuantity>Frequency</WaveQuantity>
      </Wave>
    </Parameter>
    <Parameter>
      <Name>Magnetic Field Magnitude</Name>
      <Set>Time Series defined by using: EPOCH</Set>
      <ParameterKey>bmag</ParameterKey>
      <Description>Magnetic Field Magnitude, used to infer the Electron Cyclotron Frequency, fce</Description>
      <Cadence>PT0.5S</Cadence>
      <Units>nT</Units>
      <UnitsConversion>1.0e-9&gt;T</UnitsConversion>
      <RenderingHints>
        <DisplayType>TimeSeries</DisplayType>
        <AxisLabel>B-MAG</AxisLabel>
        <ValueFormat>F13.3</ValueFormat>
        <ScaleType>LogScale</ScaleType>
      </RenderingHints>
      <ValidMin>0.0</ValidMin>
      <ValidMax>1.0e+20</ValidMax>
      <FillValue>-1.0e+31</FillValue>
      <Field>
        <Qualifier>Magnitude</Qualifier>
        <Qualifier>Scalar</Qualifier>
        <FieldQuantity>Magnetic</FieldQuantity>
      </Field>
    </Parameter>
    <Parameter>
      <Name>Electron Cyclotron Frequency</Name>
      <Set>Time Series defined by using: EPOCH</Set>
      <ParameterKey>fce</ParameterKey>
      <Description>Electron Cyclotron Frequency, fce</Description>
      <Cadence>PT0.5S</Cadence>
      <Units>Hz</Units>
      <RenderingHints>
        <DisplayType>TimeSeries</DisplayType>
        <AxisLabel>fce</AxisLabel>
        <ValueFormat>E12.2</ValueFormat>
        <ScaleType>LogScale</ScaleType>
      </RenderingHints>
      <ValidMin>0.0</ValidMin>
      <ValidMax>1.0e+20</ValidMax>
      <FillValue>-1.0e+31</FillValue>
      <Wave>
        <WaveType>PlasmaWaves</WaveType>
        <Qualifier>Scalar</Qualifier>
        <WaveQuantity>Gyrofrequency</WaveQuantity>
      </Wave>
    </Parameter>
    <Parameter>
      <Name>Electron Plasma Frequency</Name>
      <Set>Time Series defined by using: EPOCH</Set>
      <ParameterKey>fpe</ParameterKey>
      <Description>Electron Plasma Frequency, fpe</Description>
      <Cadence>PT0.5S</Cadence>
      <Units>Hz</Units>
      <RenderingHints>
        <DisplayType>TimeSeries</DisplayType>
        <AxisLabel>fpe</AxisLabel>
        <ValueFormat>E12.2</ValueFormat>
        <ScaleType>LogScale</ScaleType>
      </RenderingHints>
      <ValidMin>0.0</ValidMin>
      <ValidMax>1.0e+20</ValidMax>
      <FillValue>-1.0e+31</FillValue>
      <Wave>
        <WaveType>PlasmaWaves</WaveType>
        <Qualifier>Scalar</Qualifier>
        <WaveQuantity>PlasmaFrequency</WaveQuantity>
      </Wave>
    </Parameter>
    <Parameter>
      <Name>Ratio of Electron Plasma Oscillation Frequencies</Name>
      <Set>Time Series defined by using: EPOCH</Set>
      <ParameterKey>wpe_over_wce</ParameterKey>
      <Description>Ratio of Electron Plasma Oscillation Frequencies, the Electron Plasma Frequency, fpe, divided by the Electron Cyclotron Frequency, fce</Description>
      <Cadence>PT0.5S</Cadence>
      <RenderingHints>
        <DisplayType>TimeSeries</DisplayType>
        <AxisLabel>wpe/wce</AxisLabel>
        <ValueFormat>E12.2</ValueFormat>
        <ScaleType>LinearScale</ScaleType>
      </RenderingHints>
      <ValidMin>0.0</ValidMin>
      <ValidMax>1.0e+20</ValidMax>
      <FillValue>-1.0e+31</FillValue>
      <Mixed>
        <MixedQuantity>Other</MixedQuantity>
        <ParticleType>Electron</ParticleType>
        <Qualifier>Ratio</Qualifier>
      </Mixed>
    </Parameter>
    <Parameter>
      <Name>Upper Hybrid Resonance Frequency</Name>
      <Set>Time Series defined by using: EPOCH</Set>
      <ParameterKey>fuh</ParameterKey>
      <Description>Upper Hybrid Resonance Frequency, fuh</Description>
      <Cadence>PT0.5S</Cadence>
      <Units>Hz</Units>
      <RenderingHints>
        <DisplayType>TimeSeries</DisplayType>
        <AxisLabel>fuh</AxisLabel>
        <ValueFormat>E12.2</ValueFormat>
        <ScaleType>LogScale</ScaleType>
      </RenderingHints>
      <ValidMin>0.0</ValidMin>
      <ValidMax>1.0e+20</ValidMax>
      <FillValue>-1.0e+31</FillValue>
      <Wave>
        <WaveType>PlasmaWaves</WaveType>
        <Qualifier>Scalar</Qualifier>
        <WaveQuantity>Frequency</WaveQuantity>
      </Wave>
    </Parameter>
    <Parameter>
      <Name>Electron Density</Name>
      <Set>Time Series defined by using: EPOCH</Set>
      <ParameterKey>density</ParameterKey>
      <Description>Electron Density, inferred from the Spectrogram</Description>
      <Cadence>PT0.5S</Cadence>
      <Units>cm^-3</Units>
      <UnitsConversion>1.0e6&gt;m^-3</UnitsConversion>
      <RenderingHints>
        <DisplayType>TimeSeries</DisplayType>
        <AxisLabel>density</AxisLabel>
        <ValueFormat>E12.2</ValueFormat>
        <ScaleType>LogScale</ScaleType>
      </RenderingHints>
      <ValidMin>0.0</ValidMin>
      <ValidMax>1.0e+20</ValidMax>
      <FillValue>-1.0e+31</FillValue>
      <Particle>
        <ParticleType>Electron</ParticleType>
        <Qualifier>Scalar</Qualifier>
        <ParticleQuantity>NumberDensity</ParticleQuantity>
      </Particle>
    </Parameter>
    <Parameter>
      <Name>Digitization Type</Name>
      <Set>Time Series defined by using: EPOCH</Set>
      <ParameterKey>digi_type</ParameterKey>
      <Description>There are two Digitization Type Values: 'fuh' denotes that the Upper Hybrid Resonance Frequency, fuh, was digitized, or 'fpe' denotes that the Electron Plasma Frequency, fpe, was digitized by using Cutoffs. The digi_type Parameter is not for plotting.</Description>
      <Cadence>PT0.5S</Cadence>
      <RenderingHints>
        <DisplayType>TimeSeries</DisplayType>
        <AxisLabel>digi_type</AxisLabel>
        <ValueFormat>A11</ValueFormat>
      </RenderingHints>
      <Support>
        <Qualifier>Scalar</Qualifier>
        <SupportQuantity>InstrumentMode</SupportQuantity>
      </Support>
    </Parameter>
  </NumericalData>
</Spase>
