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  <Version>2.4.1</Version>
  <NumericalData>
    <ResourceID>spase://CNES/NumericalData/CDPP-AMDA/ACE/SWEPAM/ace-swp-all</ResourceID>
    <ResourceHeader>

      <ResourceName>sw : prelim</ResourceName>
      <AlternateName>Preliminary, 5-min averages</AlternateName>

      <ReleaseDate>2024-04-14T20:04:02Z</ReleaseDate>

      <Description>
         Solar Wind Ion parameters from ACE/SWEPAM. Preliminary, 5-min averages.
         Parameters include proton density, temperature (radial component) and flow speed, 
         flow velocity vector in GSE, GSM and RTN coordinates, and alpha to proton density ratio. 

         AMDA presents temperature in eV. The ram pressure is calculated using P=rho*Np*Vp², where rho=1.672622*(1+4*(1/(1-He++_ratio)-1)). 
         We use rho=2 here, which corresponds to a ratio of He++ between 4% and 5%.

      </Description>
      <Acknowledgement>Please acknowledge the ACE/SWEPAM instrument team and the ACE Science Center. 
      The following would be an appropriate acknowledgement: “We thank the ACE SWEPAM instrument team and the ACE Science Center for providing the ACE data.”  We would appreciate preprints/reprints of your papers when they become available. 
      </Acknowledgement>

      <Contact>

        <!-- David McComas -->

        <PersonID>spase://SMWG/Person/David.J.McComas</PersonID>

        <Role>CoInvestigator</Role>

      </Contact>
      <Contact>

        <!-- R. Skoug -->
        <PersonID>spase://SMWG/Person/Ruth.Skoug</PersonID>
        <Role>TechnicalContact</Role>
      </Contact>
      <InformationURL>

        <Name>ACE SWEPAM Level 2 data Home Page</Name>
        <URL>http://www.srl.caltech.edu/ACE/ASC/level2/swepam_l2desc.html</URL>
        <Description>

            ACE Science Center site hosting instrument information, data release notes, as well as web utilities for plotting and downloading data
         </Description>
      </InformationURL>
      <InformationURL>

        <Name>Rules of use, and caveats</Name>
        <URL>http://www.srl.caltech.edu/ACE/ASC/level2/policy_lvl2.html</URL>
        <Description>ACE level 2 data rules of use, and caveats</Description>

      </InformationURL>

    </ResourceHeader>
    <AccessInformation>

      <RepositoryID>spase://SMWG/Repository/CDPP/AMDA</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <AccessURL>
        <Name>CDPP/AMDA HAPI Server</Name>

        <URL>https://amda.irap.omp.eu/service/hapi</URL>

        <Style>HAPI</Style>

        <ProductKey>ace-swp-all</ProductKey>

        <Description>Web Service to this product using the HAPI interface.</Description>
      </AccessURL>
      <Format>CSV</Format>

      <Acknowledgement>Thank you for acknowledging the use of AMDA in publications with wording like "Data analysis was performed with the AMDA science analysis system provided by the Centre de Données de la Physique des Plasmas (CDPP) supported by CNRS, CNES, Observatoire de Paris and Université Paul Sabatier, Toulouse". See the Rules of the road at https://amda.cdpp.eu/help/policy.html . Please acknowledge the Data Providers.</Acknowledgement>

    </AccessInformation>

    <AccessInformation>

      <RepositoryID>spase://SMWG/Repository/CDPP/AMDA</RepositoryID>
      <Availability>Online</Availability>
      <AccessRights>Open</AccessRights>
      <AccessURL>
        <Name>CDPP/AMDA Web application</Name>

        <URL>https://amda.cdpp.eu</URL>

        <Description>Access to Data via CDPP/AMDA Web application.</Description>
      </AccessURL>
      <Format>CSV</Format>
      <Format>VOTable</Format>
      <Format>CDF</Format>
      <Format>PNG</Format>

      <Acknowledgement>Thank you for acknowledging the use of AMDA in publications with wording like "Data analysis was performed with the AMDA science analysis system provided by the Centre de Données de la Physique des Plasmas (CDPP) supported by CNRS, CNES, Observatoire de Paris and Université Paul Sabatier, Toulouse". See the Rules of the road at https://amda.cdpp.eu/help/policy.html . Please acknowledge the Data Providers.</Acknowledgement>

    </AccessInformation>

    <ProviderName>CDAWeb</ProviderName>
    <ProviderResourceName>ac_k0_swe</ProviderResourceName>
    <InstrumentID>spase://CNES/Instrument/CDPP-AMDA/ACE/SWEPAM</InstrumentID>
    <MeasurementType>ThermalPlasma</MeasurementType>
    <TemporalDescription>

      <TimeSpan>

        <StartDate>2001-01-01T00:00:00Z</StartDate>

        <StopDate>2024-04-06T23:55:00Z</StopDate>

      </TimeSpan>
      <Cadence>PT5M</Cadence>
    </TemporalDescription>
    <ObservedRegion>Heliosphere.NearEarth</ObservedRegion>
    <Caveats>

      The quality of ACE level 2 data is such that it is suitable for serious scientific study. However, to avoid confusion and misunderstanding, it is recommended that users consult with the appropriate ACE team members before publishing work derived from the data. The ACE team has worked hard to ensure that the level 2 data are free from errors, but the team cannot accept responsibility for erroneous data, or for misunderstandings about how the data may be used. This is especially true if the appropriate ACE team members are not consulted before publication. At the very least, preprints should be forwarded to the ACE team before publication.

   </Caveats>
    <Parameter>

      <Name>density</Name>
      <ParameterKey>swp_n</ParameterKey>
      <Description>Solar Wind Proton Number Density, scalar</Description>

      <UCD>phys.density;phys.atmol.ionStage</UCD>

      <Caveats>
         Np is the proton number density in units of cm-3, as calculated by integrating the ion distribution function.
      </Caveats>
      <Units>cm^-3</Units>
      <RenderingHints>

        <DisplayType>TimeSeries</DisplayType>

      </RenderingHints>
      <ValidMin>0.0</ValidMin>
      <ValidMax>200.0</ValidMax>
      <FillValue>-1.0E31</FillValue>
      <Particle>

        <ParticleType>Proton</ParticleType>
        <Qualifier>Moment</Qualifier>
        <ParticleQuantity>NumberDensity</ParticleQuantity>

      </Particle>

    </Parameter>
    <Parameter>

      <Name>v_bulk</Name>
      <ParameterKey>swp_v</ParameterKey>
      <Description>Solar Wind Bulk Speed</Description>

      <UCD>phys.veloc;phys.atmol.ionStage</UCD>

      <Caveats>
         Vp is the solar wind proton speed, or more generally just the solar wind (bulk) speed. It is obtained by integrating the ion (proton) distribution function.
      </Caveats>
      <Units>km/s</Units>
      <RenderingHints>

        <DisplayType>TimeSeries</DisplayType>

      </RenderingHints>
      <ValidMin>0.0</ValidMin>
      <ValidMax>2500.0</ValidMax>
      <FillValue>-1.0E31</FillValue>
      <Particle>

        <ParticleType>Proton</ParticleType>
        <Qualifier>Moment</Qualifier>
        <Qualifier>Scalar</Qualifier>
        <ParticleQuantity>Velocity</ParticleQuantity>

      </Particle>

    </Parameter>
    <Parameter>

      <Name>t_radial</Name>
      <ParameterKey>swp_t</ParameterKey>
      <Description>radial component of the proton temperature</Description>

      <UCD>phys.temperature;phys.atmol.ionStage</UCD>

      <Caveats>
         The radial component of the proton temperature is the (1,1) component of the temperature tensor, along the radial direction. It is obtained by integration of the ion (proton) distribution function.
      </Caveats>
      <Units>eV</Units>
      <RenderingHints>

        <DisplayType>TimeSeries</DisplayType>

      </RenderingHints>
      <ValidMin>1000.0</ValidMin>
      <ValidMax>1100000.0</ValidMax>
      <FillValue>-1.0E31</FillValue>
      <Particle>

        <ParticleType>Proton</ParticleType>
        <Qualifier>Moment</Qualifier>
        <ParticleQuantity>Temperature</ParticleQuantity>

      </Particle>

    </Parameter>
    <Parameter>

      <Name>alpha/proton ratio</Name>
      <ParameterKey>swp_he</ParameterKey>
      <Description>alpha to proton density ratio</Description>

      <UCD>phys.density;arith.ratio;phys.atmol.ionStage</UCD>

      <Caveats>
         Alpha ratio (Na/Np) - is the ratio of the number density of helium++ ions to the number density of protons.
      </Caveats>
      <RenderingHints>

        <DisplayType>TimeSeries</DisplayType>

      </RenderingHints>
      <ValidMin>0.0</ValidMin>
      <ValidMax>10.0</ValidMax>
      <FillValue>-1.0E31</FillValue>
      <Particle>

        <ParticleType>AlphaParticle</ParticleType>
        <ParticleType>Proton</ParticleType>
        <Qualifier>Ratio</Qualifier>
        <ParticleQuantity>NumberDensity</ParticleQuantity>

      </Particle>

    </Parameter>
    <Parameter>

      <Name>ram pressure</Name>

      <ParameterKey>swp_pdyn</ParameterKey>

      <Description>P = 2*10e-6 * Np * Vp^2</Description>

      <UCD>phys.pressure;phys.atmol.ionStage</UCD>

      <Units>nPa</Units>
      <RenderingHints>

        <DisplayType>TimeSeries</DisplayType>

      </RenderingHints>

      <Particle>
        <ParticleType>Proton</ParticleType>
        <ParticleQuantity>Pressure</ParticleQuantity>
      </Particle>
    </Parameter>
  </NumericalData>

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