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  <Version>2.7.1</Version>
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  <NumericalData>
    <ResourceID>spase://NASA/NumericalData/POLAR/PWI/MCA/PT1.3S</ResourceID>
    <NamingAuthority>NASA</NamingAuthority>
    <ResourceType>NumericalData</ResourceType>
    <ResourceHeader>
      <ResourceName>Polar Plasma Wave Instrument (PWI), Multichannel Analyzer - 1.3 sec resolution fields</ResourceName>
      <AlternateName>PO_H0_PWI</AlternateName>
      <AlternateName>Polar PWI MCA CDFs at NASA's CDAWeb</AlternateName>
      <DOI>https://doi.org/10.48322/879x-0r04</DOI>
      <ReleaseDate>2025-12-04T13:31:02Z</ReleaseDate>
      <RevisionHistory>
        <RevisionEvent>
          <ReleaseDate>2021-04-27T15:38:11</ReleaseDate>
          <Note>Only known prior ReleaseDate of the metadata</Note>
        </RevisionEvent>
        <RevisionEvent>
          <ReleaseDate>2023-07-30T12:34:56.789</ReleaseDate>
          <Note>Added DOI and PublicationInfo minted by LFB, metadata versioned up to SPASE 2.6.0, reviewed by LFB 20230727</Note>
        </RevisionEvent>
        <RevisionEvent>
          <ReleaseDate>2025-09-15T12:34:56.789</ReleaseDate>
          <Note>Revised ObservedRegion and AccessInformation. JMW</Note>
        </RevisionEvent>
        <RevisionEvent>
          <ReleaseDate>2025-10-03T10:48:56Z</ReleaseDate>
          <Note>Updated PublishedBy name to match ROR Registry. Added ResourceType and NamingAuthority. Changed http to https in top-level schemaLocation attribute. Fixed version number separator in top-level schemaLocation attribute. Matched version number in schemaLocation attribute to updated value in Version tag. ZCB</Note>
        </RevisionEvent>
        <RevisionEvent>
          <ReleaseDate>2025-12-04T13:31:02Z</ReleaseDate>
          <Note>Added MetadataRightsList and RightsList(s). Updated to 2.7.1. ZCB</Note>
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      <Description>The PO_H0_PWI Multichannel Analyzer (MCA) CDF files provide good time resolution with relatively poor frequency resolution. An electric field measurement covers 5.6 Hz to 311 kHz in 20 channels logarithmically spaced. The magnetic field measurements cover a range from 5.6 Hz to 10 kHz in 14 channels logarithmically spaced. Reference: Gurnett, D.A. et al, The Polar plasma wave instrument, Space Science Reviews, Vol. 71, pp. 597-622, 1995. Note: The electron cyclotron frequencies are derived from the following: Fce = 0.028 kHz*B, where B is the magnitude of the ambient magnetic field measured in nT.</Description>
      <Acknowledgement>Users please acknowledge the Coordinated Data Analysis Web (CDAWeb) at the NASA Goddard Space Flight Center and Polar PWI instrument Principal Investigator Don Gurnett.</Acknowledgement>
      <PublicationInfo>
        <Authors>Gurnett, Donald, A.; Menietti, J., Douglas</Authors>
        <PublicationDate>2023-01-01T00:00:00</PublicationDate>
        <PublishedBy>Space Physics Data Facility</PublishedBy>
      </PublicationInfo>
      <Contact>
        <PersonID>spase://SMWG/Person/Donald.A.Gurnett</PersonID>
        <Role>PrincipalInvestigator</Role>
      </Contact>
      <Contact>
        <PersonID>spase://SMWG/Person/J.Douglas.Menietti</PersonID>
        <Role>GeneralContact</Role>
      </Contact>
      <Contact>
        <PersonID>spase://SMWG/Person/Lee.Frost.Bargatze</PersonID>
        <Role>MetadataContact</Role>
      </Contact>
      <InformationURL>
        <Name>Polar Plasma Wave Investigation (PWI) Data and User's Guides</Name>
        <URL>https://www-pw.physics.uiowa.edu/plasma-wave/istp/polar/data.html</URL>
        <Description>A Polar PWI page is maintained at the University of Iowa with descriptions of interpretation issues, user's guides, data availability tables, a form for creating summary plots and access to pregenerated dynamic spectrograms.</Description>
        <Language>en</Language>
      </InformationURL>
      <InformationURL>
        <Name>User's Guide to PWI Receiver Design Features and Modes</Name>
        <URL>https://www-pw.physics.uiowa.edu/plasma-wave/istp/polar/modes.html</URL>
        <Description>Descriptions of PWI receiver and antenna modes.</Description>
        <Language>en</Language>
      </InformationURL>
      <PriorID>spase://VWO/NumericalData/POLAR/PWI/Polar_PWI_MCA_PT1S</PriorID>
      <PriorID>spase://VWO/NumericalData/POLAR/PWI/MCA.PT1.3S</PriorID>
      <PriorID>spase://VSPO/NumericalData/POLAR/PWI/MCA/PT1.3S</PriorID>
    </ResourceHeader>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <RightsList>
        <Rights>
          <SchemeURI>https://spdx.org/licenses/</SchemeURI>
          <RightsIdentifierScheme>SPDX</RightsIdentifierScheme>
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          <RightsURI>https://spdx.org/licenses/CC0-1.0.html</RightsURI>
          <RightsName>Creative Commons Zero v1.0 Universal</RightsName>
          <Note>CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products</Note>
        </Rights>
      </RightsList>
      <AccessURL>
        <Name>FTPS from SPDF (not with most browsers)</Name>
        <URL>ftps://spdf.gsfc.nasa.gov/pub/data/polar/pwi/pwi_h0/</URL>
        <Description>FTP access to repository of Polar PWI MCA CDFs at NASA CDAWeb. Name of the data resource: PO_H0_PWI</Description>
        <Language>en</Language>
      </AccessURL>
      <AccessURL>
        <Name>HTTPS from SPDF</Name>
        <URL>https://spdf.gsfc.nasa.gov/pub/data/polar/pwi/pwi_h0/</URL>
        <Description>In CDF via HTTP from SPDF</Description>
      </AccessURL>
      <Format>CDF</Format>
      <Acknowledgement>Users please acknowledge Coordinated Data Analysis Web (CDAWeb) at the NASA Goddard Space Flight Center and Polar PWI instrument Principal Investigator Don Gurnett.</Acknowledgement>
    </AccessInformation>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <RightsList>
        <Rights>
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          <RightsName>Creative Commons Zero v1.0 Universal</RightsName>
          <Note>CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products</Note>
        </Rights>
      </RightsList>
      <AccessURL>
        <Name>CDAWeb</Name>
        <URL>https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?dataset=PO_H0_PWI&amp;index=sp_phys</URL>
        <ProductKey>PO_H0_PWI</ProductKey>
        <Description>Repository of Polar PWI data with subset, plot and list functionalities from NASA CDAWeb, accessible via web interface. Name of the data resource: PO_H0_PWI.</Description>
        <Language>en</Language>
      </AccessURL>
      <Format>Text</Format>
      <Encoding>None</Encoding>
      <Acknowledgement>Users please acknowledge Coordinated Data Analysis Web (CDAWeb) at the NASA Goddard Space Flight Center and Polar PWI instrument Principal Investigator Don Gurnett.</Acknowledgement>
    </AccessInformation>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF/CDAWeb</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <RightsList>
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          <RightsName>Creative Commons Zero v1.0 Universal</RightsName>
          <Note>CC0 1.0 Universal is the Creative Commons license applicable to all publicly available NASA Heliophysics data products</Note>
        </Rights>
      </RightsList>
      <AccessURL>
        <Name>CDAWeb HAPI Server</Name>
        <URL>https://cdaweb.gsfc.nasa.gov/hapi</URL>
        <Style>HAPI</Style>
        <ProductKey>PO_H0_PWI@0</ProductKey>
        <ProductKey>PO_H0_PWI@1</ProductKey>
        <Description>Web Service to this product using the HAPI interface.</Description>
      </AccessURL>
      <Format>CSV</Format>
      <Acknowledgement>Users please acknowledge Coordinated Data Analysis Web (CDAWeb) at the NASA Goddard Space Flight Center and Polar PWI instrument Principal Investigator Don Gurnett.</Acknowledgement>
    </AccessInformation>
    <ProcessingLevel>Calibrated</ProcessingLevel>
    <InstrumentID>spase://SMWG/Instrument/POLAR/PWI</InstrumentID>
    <MeasurementType>Waves.Passive</MeasurementType>
    <MeasurementType>Spectrum</MeasurementType>
    <TemporalDescription>
      <TimeSpan>
        <StartDate>1996-03-25T00:00:00Z</StartDate>
        <StopDate>1997-09-16T17:00:00Z</StopDate>
      </TimeSpan>
      <Cadence>PT1.3S</Cadence>
    </TemporalDescription>
    <SpectralRange>RadioFrequency</SpectralRange>
    <ObservedRegion>Earth.Magnetosphere</ObservedRegion>
    <ObservedRegion>Earth.NearSurface.Plasmasphere</ObservedRegion>
    <ObservedRegion>Earth.NearSurface.AuroralRegion</ObservedRegion>
    <ObservedRegion>Earth.NearSurface.PolarCap</ObservedRegion>
    <Caveats>See the Polar Interpretation Issues web site at http://www-pw.physics.uiowa.edu/plasma-wave/istp/polar/interpretation.html</Caveats>
    <Keyword>Dynamic Spectrogram</Keyword>
    <Keyword>Spectrogram</Keyword>
    <Keyword>AKR</Keyword>
    <Keyword>Auroral hiss</Keyword>
    <Keyword>Auroral Kilometric Radiation</Keyword>
    <Keyword>Banded emissions</Keyword>
    <Keyword>Broadband Electrostatic Noise</Keyword>
    <Keyword>BEN</Keyword>
    <Keyword>Chorus</Keyword>
    <Keyword>Continuum radiation</Keyword>
    <Keyword>Electromagnetic Ion Cyclotron waves</Keyword>
    <Keyword>EMIC</Keyword>
    <Keyword>Electron Cyclotron Harmonics</Keyword>
    <Keyword>Kilometric Continuum radiation</Keyword>
    <Keyword>Myriametric radiation</Keyword>
    <Keyword>Plasmaspheric Hiss</Keyword>
    <Keyword>Solar radio burst</Keyword>
    <Keyword>Terrestrial Kilometric Radiation</Keyword>
    <Keyword>TKR</Keyword>
    <Keyword>UHR</Keyword>
    <Keyword>Upper hybrid resonance</Keyword>
    <Keyword>Whistler mode</Keyword>
    <Keyword>Whistlers</Keyword>
    <Parameter>
      <Name>Time</Name>
      <ParameterKey>Epoch</ParameterKey>
      <Description>Time, begin time of MCA E spectrum</Description>
      <Units>ms</Units>
      <Support>
        <SupportQuantity>Temporal</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>Time</Name>
      <ParameterKey>EpochB</ParameterKey>
      <Description>Time, begin time of MCA B spectrum</Description>
      <Units>ms</Units>
      <Support>
        <SupportQuantity>Temporal</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>Electron Cyclotron Frequency</Name>
      <ParameterKey>Fce</ParameterKey>
      <Description>Electron Cyclotron Frequency, scalar</Description>
      <Units>Hz</Units>
      <Support>
        <SupportQuantity>Other</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>Antenna for MCA E</Name>
      <ParameterKey>MCAE_Antenna</ParameterKey>
      <Description>Antenna (MCAE) 0 = Eu, 1 = Ev, 2 = Ez</Description>
      <Units>(0=Eu,1=Ev,2=Ez)</Units>
      <Support>
        <SupportQuantity>Other</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>Antenna for MCA B</Name>
      <ParameterKey>MCAB_Antenna</ParameterKey>
      <Description>Antenna (MCAB) 1 = Bu, 2 = Bv, 3 = Bz</Description>
      <Units>(0=Bu,1=Bv,2=Bz)</Units>
      <Support>
        <SupportQuantity>Other</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>Time</Name>
      <ParameterKey>Time_PB5</ParameterKey>
      <Description>Time, begin time of spectrum. Contains Year, DOY, MSOD</Description>
      <Support>
        <SupportQuantity>Temporal</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>Elec. Field MCA E</Name>
      <ParameterKey>MCAE_Elec</ParameterKey>
      <Description>Elec. Field at 20 freq., 5.62-311000 Hz (MCA E)</Description>
      <Units>(V/M)**2/Hz</Units>
      <Wave>
        <WaveType>PlasmaWaves</WaveType>
        <WaveQuantity>ACElectricField</WaveQuantity>
        <FrequencyRange>
          <SpectralRange>RadioFrequency</SpectralRange>
          <Low>5.62</Low>
          <High>311000</High>
          <Units>Hz</Units>
        </FrequencyRange>
      </Wave>
    </Parameter>
    <Parameter>
      <Name>Mag. Field MCA B</Name>
      <ParameterKey>MCAB_Mag</ParameterKey>
      <Description>Mag. Field at 14 freq., 5.62-10000 Hz (MCA B)</Description>
      <Units>nT**2/Hz</Units>
      <Wave>
        <WaveType>PlasmaWaves</WaveType>
        <WaveQuantity>ACMagneticField</WaveQuantity>
        <FrequencyRange>
          <SpectralRange>RadioFrequency</SpectralRange>
          <Low>5.62</Low>
          <High>10000</High>
          <Units>Hz</Units>
        </FrequencyRange>
      </Wave>
    </Parameter>
    <Parameter>
      <Name>Frequency</Name>
      <ParameterKey>Frequency</ParameterKey>
      <Description>Frequencies (E-field), 20 (5.62-311000) Hz</Description>
      <Units>Hz</Units>
      <Support>
        <SupportQuantity>Other</SupportQuantity>
      </Support>
    </Parameter>
    <Parameter>
      <Name>Frequency</Name>
      <ParameterKey>FrequencyB</ParameterKey>
      <Description>Frequencies (B-field), 14 (5.62-10000) Hz</Description>
      <Units>Hz</Units>
      <Support>
        <SupportQuantity>Other</SupportQuantity>
      </Support>
    </Parameter>
  </NumericalData>
</Spase>