<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
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  <_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.</_Note>
  <Version>2.6.1</Version>
  <_MasterURL>https://cdaweb.gsfc.nasa.gov/pub/software/cdawlib/0JSONS/cnofs_plp_plasma_1sec_00000000_v01.json (from all.xml)</_MasterURL>
  <NumericalData>
    <ResourceID>spase://NASA/NumericalData/CNOFS/PLP/PT1S</ResourceID>
    <_ResourceID>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ResourceID.json</_ResourceID>
    <ResourceHeader>
      <ResourceName>Planar Langmuir Probe 1-sec average Key Parameters (Ni, Ne, Te). The data are PRELIMINARY, and as such, are intended for BROWSE PURPOSES ONLY</ResourceName>
      <_ResourceName>Source: Master/CDFglobalAttributes/Logical_source_description</_ResourceName>
      <AlternateName>CNOFS_PLP_plasma_1sec</AlternateName>
      <_AlternateName>Source: Master/CDFglobalAttributes/Logical_source</_AlternateName>
      <Description>The Planar Langmuir Probe on C/NOFS is a suite of 2 current measuring sensors mounted on the ram facing surface of the spacecraft.  The primary sensor is an Ion Trap (conceptually similar to RPAs flown on many other spacecraft) capable of measuring ion densities as low as 1 cm-3 with a 12 bit log electrometer.  The secondary senor is a swept bias planar Langmuir probe (Surface Probe) capable of measuring Ne, Te, and spacecraft potential.The ion number density is the one second average of the ion density sampled at either 32, 256, 512, or 1024 Hz (depending on the mode).The ion density standard deviation is the standard deviation of the samples used to produce the one second average number density.DeltaN/N is the detrened ion number density 1 second standard deviation divided by the mean 1 sec density.The electron density, electron temperature, and spacecraft potential are all derived from a least squares fit to the current-bias curve from the Surface Probe.The data are PRELIMINARY, and as such, are intended for BROWSE PURPOSES ONLY.Regestering your email will allow notification of updates.</Description>
      <_Description>Source: Master/CDFglobalAttributes/TEXT</_Description>
      <Acknowledgement>The C/NOFS mission is supported by the Air Force Research Laboratory, the Department of Defense Space Test Program, the National Aeronautics and Space Administration (NASA), the Naval Research Laboratory, and the Aerospace Corporation.</Acknowledgement>
      <_Acknowledgement>Source: Master/CDFglobalAttributes/Acknowledgement</_Acknowledgement>
      <_Rights>
        <Name>SPDX</Name>
        <Description>Creative Commons Zero v1.0 Universal</Description>
        <URL>https://spdx.org/licenses/CC0-1.0.html</URL>
        <SchemeURI>https://spdx.org/licenses/</SchemeURI>
      </_Rights>
      <InformationURL>
        <Name>C/NOFS PLP 1-s plasma parameter data</Name>
        <URL>https://cdaweb.gsfc.nasa.gov/index.html</URL>
        <Description>1-sec PLP avg key parameters preliminary data from CDAWeb</Description>
        <_Note>Source: InformationURL.json</_Note>
      </InformationURL>
    </ResourceHeader>
    <ProviderResourceName>CNOFS PLP Key Parameters</ProviderResourceName>
    <Caveats>We request that all presentation and publications using PLP data:1) be submitted to the PI for review prior to publication or presentation,  2) Include PI authorhip or acknowledgement, 3) Acknowledge AFRLs C/NOFS program, and 4) Acknowledge the SMC Space Development and Test Wing.  donald.hunton@us.af.mil, patrick.roddy@us.af.mil</Caveats>
    <_Caveats>Source: Master/CDFglobalAttributes/Rules_of_use</_Caveats>
    <DOI>https://doi.org/10.48322/xnnr-w563</DOI>
    <_DOI>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/DOI.json</_DOI>
    <_AccessInformation>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/AccessInformation.json</_AccessInformation>
    <TemporalDescription>
      <TimeSpan>
        <StartDate>2008-11-01T00:00:00Z</StartDate>
        <StopDate>2010-11-21T23:59:58Z</StopDate>
      </TimeSpan>
      <_TemporalDescription>Generated from all.xml/@timerange_start and all.xml/@timerange_stop</_TemporalDescription>
      <Cadence>PT1S</Cadence>
      <_Cadence>Counts based on variable 'EPOCH' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/cnofs/plp/plasma_1sec/2008/cnofs_plp_plasma_1sec_20081101_v01.cdf. The most common cadence, 1000 [ms] = PT1S, occurred for 58.3699% of the 50431 timesteps. </_Cadence>
    </TemporalDescription>
    <_ObservedRegion>Source: https://github.com/rweigel/cdawmeta-spase/blob/main/ObservedRegion.json</_ObservedRegion>
    <ProcessingLevel/>
    <_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</_ProcessingLevel>
    <InstrumentID>spase://SMWG/Instrument/CNOFS/PLP</InstrumentID>
    <MeasurementType>ThermalPlasma</MeasurementType>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <Acknowledgement>SPDF/CDAWeb. Please also acknowledge the data producer: D. E. Hunton at Air Force Research Laboratory, Space Vehicles Directorate</Acknowledgement>
      <Style>Listing</Style>
      <AccessURL>
        <Name>HTTPS from SPDF</Name>
        <URL>https://cdaweb.gsfc.nasa.gov/pub/data/cnofs/plp/plasma_1sec</URL>
        <Description>In CDF via HTTP from CDAWeb</Description>
        <AccessFilenameTemplate>cnofs_plp_plasma_1sec_%Y%m%d_%Q.cdf</AccessFilenameTemplate>
        <AccessDirectoryTemplate>%Y</AccessDirectoryTemplate>
        <ProductKey>CNOFS_PLP_PLASMA_1SEC</ProductKey>
      </AccessURL>
      <Format>CDF</Format>
    </AccessInformation>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <Acknowledgement>SPDF/CDAWeb. Please also acknowledge the data producer: D. E. Hunton at Air Force Research Laboratory, Space Vehicles Directorate</Acknowledgement>
      <Style>Listing</Style>
      <AccessURL>
        <Name>FTPS from SPDF</Name>
        <URL>ftps://cdaweb.gsfc.nasa.gov/pub/data/cnofs/plp/plasma_1sec</URL>
        <Description>In CDF via HTTP from CDAWeb</Description>
        <AccessFilenameTemplate>cnofs_plp_plasma_1sec_%Y%m%d_%Q.cdf</AccessFilenameTemplate>
        <AccessDirectoryTemplate>%Y</AccessDirectoryTemplate>
        <ProductKey>CNOFS_PLP_PLASMA_1SEC</ProductKey>
      </AccessURL>
      <Format>CDF</Format>
    </AccessInformation>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <Acknowledgement>SPDF/CDAWeb. Please also acknowledge the data producer: D. E. Hunton at Air Force Research Laboratory, Space Vehicles Directorate</Acknowledgement>
      <AccessURL>
        <Name>CDAWeb Web Service</Name>
        <URL>https://cdaweb.gsfc.nasa.gov/WebServices/</URL>
        <Style>WebService</Style>
        <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.</Description>
        <ProductKey>CNOFS_PLP_PLASMA_1SEC</ProductKey>
      </AccessURL>
      <Format>CDF</Format>
      <Format>CSV</Format>
      <Format>GIF</Format>
      <Format>NetCDF</Format>
      <Format>PNG</Format>
      <Format>PS</Format>
      <Format>PDF</Format>
      <Format>XML</Format>
      <Format>x_Script.IDL</Format>
      <Format>x_Script.Python</Format>
      <Format>Text.ASCII</Format>
      <Format>x_WAV</Format>
    </AccessInformation>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <Acknowledgement>SPDF/CDAWeb. Please also acknowledge the data producer: D. E. Hunton at Air Force Research Laboratory, Space Vehicles Directorate</Acknowledgement>
      <AccessURL>
        <Name>CDAWeb Web Service user interface</Name>
        <URL>https://cdaweb.gsfc.nasa.gov/cgi-bin/eval2.cgi?index=sp_phys&amp;dataset=CNOFS_PLP_PLASMA_1SEC</URL>
        <Style>WebService</Style>
        <ProductKey>CNOFS_PLP_PLASMA_1SEC</ProductKey>
        <Description>Web service user interface for this product.</Description>
      </AccessURL>
      <Format>CDF</Format>
      <Format>GIF</Format>
      <Format>PDF</Format>
      <Format>Text.ASCII</Format>
      <Format>x_WAV</Format>
    </AccessInformation>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <Acknowledgement>SPDF/CDAWeb. Please also acknowledge the data producer: D. E. Hunton at Air Force Research Laboratory, Space Vehicles Directorate</Acknowledgement>
      <AccessURL>
        <Name>CDAWeb Python Script</Name>
        <URL>https://cdaweb.gsfc.nasa.gov/WS/cdasr/1/dataviews/sp_phys/datasets/CNOFS_PLP_PLASMA_1SEC/clientLibraryExample/</URL>
        <ProductKey>CNOFS_PLP_PLASMA_1SEC</ProductKey>
        <Style>WebService</Style>
        <Description>Web service that generates a Python script to access this product.</Description>
      </AccessURL>
      <Format>x_Script.IDL</Format>
      <Format>x_Script.Python</Format>
    </AccessInformation>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <Acknowledgement>SPDF/SSCWeb. Please also acknowledge the data producer: D. E. Hunton at Air Force Research Laboratory, Space Vehicles Directorate</Acknowledgement>
      <AccessURL>
        <Name>4D Orbit Viewer</Name>
        <URL>https://sscweb.gsfc.nasa.gov/4dorbit/?sc=CNOFS_PLP_PLASMA_1SEC</URL>
        <ProductKey>CNOFS_PLP_PLASMA_1SEC</ProductKey>
        <Style>x_Visualization</Style>
        <Description>Web Service to this product.</Description>
      </AccessURL>
      <Format>HTML</Format>
    </AccessInformation>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <Acknowledgement>SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: D. E. Hunton at Air Force Research Laboratory, Space Vehicles Directorate</Acknowledgement>
      <AccessURL>
        <Name>CDAWeb HAPI Server</Name>
        <URL>https://hapi-server.org/servers/#server=CDAWeb&amp;dataset=CNOFS_PLP_PLASMA_1SEC</URL>
        <Style>HAPI</Style>
        <ProductKey>CNOFS_PLP_PLASMA_1SEC</ProductKey>
        <Description>Web Service to this product using the HAPI interface.</Description>
      </AccessURL>
      <Format>CSV</Format>
      <Format>JSON</Format>
      <Format>Binary</Format>
    </AccessInformation>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <Acknowledgement>SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: D. E. Hunton at Air Force Research Laboratory, Space Vehicles Directorate</Acknowledgement>
      <AccessURL>
        <Name>CDAWeb HAPI Script in Multiple Languages</Name>
        <URL>https://hapi-server.org/servers/#server=CDAWeb&amp;dataset=CNOFS_PLP_PLASMA_1SEC&amp;return=script</URL>
        <Style>HAPI</Style>
        <ProductKey>CNOFS_PLP_PLASMA_1SEC</ProductKey>
        <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.</Description>
      </AccessURL>
      <Format>x_Script.IDL</Format>
      <Format>x_Script.Javascript</Format>
      <Format>x_Script.MATLAB</Format>
      <Format>x_Script.Python</Format>
      <Format>x_Script.Autoplot</Format>
      <Format>x_Script.curl</Format>
      <Format>x_Script.wget</Format>
    </AccessInformation>
    <AccessInformation>
      <RepositoryID>spase://SMWG/Repository/NASA/GSFC/SPDF</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <Acknowledgement>SPDF/CDAWeb and the HAPI project. Please also acknowledge the data producer: D. E. Hunton at Air Force Research Laboratory, Space Vehicles Directorate</Acknowledgement>
      <AccessURL>
        <Name>HAPI visualizations</Name>
        <URL>https://hapi-server.org/plot/?server=https://cdaweb.gsfc.nasa.gov/hapi&amp;dataset=CNOFS_PLP_PLASMA_1SEC&amp;format=gallery</URL>
        <Style>x_Visualization</Style>
        <ProductKey>CNOFS_PLP_PLASMA_1SEC</ProductKey>
        <Description>Web Service that generates plots. See https://hapi-server.org/plot/ for the API.</Description>
      </AccessURL>
      <Format>PNG</Format>
      <Format>PDF</Format>
      <Format>SVG</Format>
    </AccessInformation>
    <Keyword>Communications/Navigation Outage Forecast System (from all.xml/observatory/description/@short)</Keyword>
    <Keyword>Planar Langmuir Probe (from all.xml/instrument/description/@short)</Keyword>
    <Keyword>Space Physics (from Master/CDFglobalAttributes/Discipline)</Keyword>
    <Keyword>Ionospheric Science (from Master/CDFglobalAttributes/Discipline)</Keyword>
    <Keyword>CNOFS (from Master/CDFglobalAttributes/Source_name)</Keyword>
    <Keyword>Communications/Navigation Outage Forecast System (from Master/CDFglobalAttributes/Source_name)</Keyword>
    <Keyword>K0 (from Master/CDFglobalAttributes/Data_type)</Keyword>
    <Keyword>Key Parameter, The data are PRELIMINARY, and as such, are intended for BROWSE PURPOSES ONLY. (from Master/CDFglobalAttributes/Data_type)</Keyword>
    <Keyword>PLP (from all.xml/instrument/@ID)</Keyword>
    <ObservedRegion>Earth.NearSurface.Ionosphere</ObservedRegion>
    <ObservedRegion>Earth.NearSurface</ObservedRegion>
    <Parameter2>
      <Name>EPOCH</Name>
      <ParameterKey>EPOCH</ParameterKey>
      <Description>CATDESC: 'Default time'. 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.'</Description>
      <Units>cdfepoch</Units>
      <Support>
        <Qualifier>Scalar</Qualifier>
        <SupportQuantity>Temporal</SupportQuantity>
      </Support>
    </Parameter2>
    <Parameter2>
      <Name>Ion number density</Name>
      <ParameterKey>Ni</ParameterKey>
      <Description>Master CDF CATDESC: 'Ion density from Ion Trap [PRELIMINARY, for BROWSE PURPOSES ONLY]'. Master CDF VAR_NOTES: 'From PLP Ion Trap'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'</Description>
      <Units>cm-3</Units>
      <FillValue>-1e+31</FillValue>
    </Parameter2>
    <Parameter2>
      <Name>Ion number density standard deviation</Name>
      <ParameterKey>Ni_std</ParameterKey>
      <Description>Master CDF CATDESC: 'Standard deviation (STD) of 1-sec ion density [PRELIMINARY, for BROWSE PURPOSES ONLY.'. Master CDF VAR_NOTES: 'From PLP Ion Trap'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'</Description>
      <Units>cm-3</Units>
      <FillValue>-1e+31</FillValue>
    </Parameter2>
    <Parameter2>
      <Name>Delta(N)/N</Name>
      <ParameterKey>dN_N</ParameterKey>
      <Description>Master CDF CATDESC: '(STD of detrended Ni)/(mean of Ni) for 1-sec interval [PRELIMINARY, for BROWSE PURPOSES ONLY]'. Master CDF VAR_NOTES: 'From PLP Ion Trap'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'</Description>
      <Units> </Units>
      <FillValue>-1e+31</FillValue>
    </Parameter2>
    <Parameter2>
      <Name>Electron density</Name>
      <ParameterKey>N_electron</ParameterKey>
      <Description>Master CDF CATDESC: 'Electron density from Langmuir Probe [PRELIMINARY, for BROWSE PURPOSES ONLY.'. Master CDF VAR_NOTES: 'From PLP Surface Probe swept bias mode'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'</Description>
      <Units>cm-3</Units>
      <FillValue>-1e+31</FillValue>
    </Parameter2>
    <Parameter2>
      <Name>Electron Temperature</Name>
      <ParameterKey>Te</ParameterKey>
      <Description>Master CDF CATDESC: 'Electron temperature from Langmuir Probe [PRELIMINARY, for BROWSE PURPOSES ONLY.'. Master CDF VAR_NOTES: 'From PLP Surface Probe swept bias mode'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'</Description>
      <Units>Kelvin</Units>
      <FillValue>-1e+31</FillValue>
    </Parameter2>
    <Parameter2>
      <Name>Spacecraft Potential</Name>
      <ParameterKey>SC_POT</ParameterKey>
      <Description>Master CDF CATDESC: 'Spacecraft potential in Volts [PRELIMINARY, for BROWSE PURPOSES ONLY.'. Master CDF VAR_NOTES: 'From PLP Surface Probe swept bias mode'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'</Description>
      <Units>Volts</Units>
      <FillValue>-1e+31</FillValue>
    </Parameter2>
    <Parameter2>
      <Name>Geodetic  Latitude</Name>
      <ParameterKey>GLAT</ParameterKey>
      <Description>Master CDF CATDESC: 'Geodetic Latitdue in degree (WGS84 spheroid)'. Master CDF VAR_NOTES: 'Semi-major axis: 6378.137 km, Semi-minor axis 6356.752 km'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'</Description>
      <Units>deg</Units>
      <FillValue>-1e+31</FillValue>
    </Parameter2>
    <Parameter2>
      <Name>Geodetic Longitude</Name>
      <ParameterKey>GLON</ParameterKey>
      <Description>Master CDF CATDESC: 'Geodetic Longitude in degree (WGS84 spheroid)'. Master CDF VAR_NOTES: 'Semi-major axis: 6378.137 km, Semi-minor axis 6356.752 km'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'</Description>
      <Units>deg</Units>
      <FillValue>-1e+31</FillValue>
    </Parameter2>
    <Parameter2>
      <Name>Geodetic Altitude</Name>
      <ParameterKey>ALT</ParameterKey>
      <Description>Master CDF CATDESC: 'Geodetic Altitude in km (WGS84 spheroid)'. Master CDF VAR_NOTES: 'Semi-major axis: 6378.137 km, Semi-minor axis 6356.752 km'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'</Description>
      <Units>km</Units>
      <FillValue>-1e+31</FillValue>
    </Parameter2>
    <Parameter2>
      <Name>Solar Local Time</Name>
      <ParameterKey>SLT</ParameterKey>
      <Description>Master CDF CATDESC: 'Local apparent solar time in decimal hours'. Master CDF VAR_NOTES: 'Difference in geographic longitude between solar and satellite subpoints'. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'</Description>
      <Units>hours</Units>
      <FillValue>-1e+31</FillValue>
    </Parameter2>
    <Parameter2>
      <Name>Ion density quality flag</Name>
      <ParameterKey>Ni_quality_flag</ParameterKey>
      <Description>Master CDF CATDESC: 'Ion density quality flag [not yet defined]'. Master CDF VAR_NOTES: ' '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'</Description>
      <Units> </Units>
      <FillValue>255</FillValue>
    </Parameter2>
    <Parameter2>
      <Name>Electron Temp quality flag</Name>
      <ParameterKey>Te_quality_flag</ParameterKey>
      <Description>Master CDF CATDESC: 'Electron temperature quality flag [not yet defined]'. Master CDF VAR_NOTES: ' '. Notes not in Master CDF: 'The time index (the ISTP DEPEND_0 variable) for this parameter is EPOCH.'</Description>
      <Units> </Units>
      <FillValue>255</FillValue>
    </Parameter2>
  </NumericalData>
</Spase>
