<?xml version="1.0" encoding="UTF-8"?>

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    <Version>2.3.1</Version>
    <NumericalData>
        <ResourceID>spase://CNES/NumericalData/CDPP-AMDA/Rosetta/LAP/ros-lap-nel</ResourceID>
        <ResourceHeader>
            <ResourceName>plasma density (NEL)</ResourceName>
            <AlternateName>Plasma density which contains the highest time resolution cross-calibrated density data, 
when RPC-MIP is not delivering cross-calibrated density products</AlternateName>
            <ReleaseDate>2016-10-15T14:08:29Z</ReleaseDate>
            <Description>This data set is based on LAP data with use of a long-term LAP-MIP cross calibration for some time intervals 
when MIP-LAP density is not available. Plasma density derived from individual current 
measurements or floating potential measurements on one probe.
            
This is a preliminary data set which will be replaced by another in a few months.
            </Description>
            <Contact>       
                <PersonID>spase://CNES/Person/Anders.Eriksson</PersonID>
                <Role>PrincipalInvestigator</Role>
            </Contact>
            <Contact>       
                <PersonID>spase://CNES/Person/Erik.Johansson</PersonID>
                <Role>DataProducer</Role>
            </Contact>
            <InformationURL>
                <Name>RPC User Guide</Name>
                <URL>http://amda.irap.omp.eu/help/parameters/RPC_USER_GUIDE.PDF</URL>
            </InformationURL>
            <InformationURL>                
                <Name>RPC LAP User Guide</Name>
                <URL>http://amda.irap.omp.eu/help/parameters/RO-IRFU-LAP-UG.PDF</URL>
            </InformationURL>
            <InformationURL>
                <Name>RPC-LAP to Planetary Science Archive Interface Control Document</Name>
                <URL>http://amda.irap.omp.eu/help/parameters/RO-IRFU-LAP-EAICD.PDF</URL>
            </InformationURL>
            <InformationURL>
                <Name>RPC-LAP Report on cross-calibration of LAP data to measurements by other RPC instruments</Name>
                <URL>http://amda.irap.omp.eu/help/parameters/RO-IRFU-LAP-XCAL.PDF</URL>
            </InformationURL>         
        </ResourceHeader>
        <AccessInformation>

            <RepositoryID>spase://SMWG/Repository/CNES/CDPP-AMDA</RepositoryID>

            <Availability>Online</Availability>
            <AccessRights>Restricted</AccessRights>
            <AccessURL>
                <URL>http://amda.cdpp.eu</URL>
            </AccessURL>
            <Format>NetCDF</Format>
        </AccessInformation>
        <ProviderName>PSA</ProviderName>  
        <ProviderResourceName>RO-C-RPCLAP-5-xxx-NEL-V1.0</ProviderResourceName>

        <InstrumentID>spase://CNES/Instrument/CDPP-AMDA/Rosetta/LAP</InstrumentID>

        <MeasurementType>ThermalPlasma</MeasurementType>
        <TemporalDescription>
            <TimeSpan>
                <StartDate>2014-03-24T08:12:59Z</StartDate>
                <StopDate>2016-09-30T10:31:16Z</StopDate>
            </TimeSpan>
            <CadenceMin>PT0.016S</CadenceMin>

            <CadenceMax>PT128S</CadenceMax>

        </TemporalDescription>
        <Caveats>
            It is highly recommended to take into account quality value while working with plasma density. 
            * Parameter n_e_good corresponds to n_e quality gt 0.2
            * Parameter n_e - all n_e quality values
            * Note that you can colorize n_e parameter with the quality value (use ColoredParameter field of Plot Interface).
            * Please always download  quality value along with the n_e parameter.
            
            Data Source :
            * 1 - Downsampled floating potential measurement for an illuminated LAP1
            * 2 - Downsampled floating potential measurement for an illuminated LAP2
            * 3 - Vz for LAP1
            * 4 - Vz for LAP1, but using a linearly extrapolated sweep
            Quality Flag : 
            
            A quality flag is a (base 10) integer that is constructed in the two steps below:
            * Add together the constants associated with the relevant quality-related effects listed below. Note that these constants are chosen such that every digit represents up to three true/false values for the presence/absence of three specific separate quality-related effects.
            * Should the three quality-related effects be irrelevant for the given data product, then that digit is replaced by the digit “9”.
            
            Quality flag event description :
            * +1 - Low quality sweep analysis model fit
            * +2 - One of two meanings: (1) Low sample size; an average is based on fewer data points than nominal (due to filtering or otherwise) and applies to sweep steps and downsampled time series. (2) zero-padding; zeros replace lost samples for the purpose of calculating PSD.
            * +10 - One of two meanings: (1) Sweep data product and data products based on sweeps: SAA rotation of more than 0.05° during sweep. (2) Downsampled time series data product: Bias change within the 32 s downsampling period.
            * +20 - Probe in partial or full shadow
            * +100 - Rosetta wheel off-loading (WOL) or Orbit-control-maneuver (OCM)
            * +200 - One of two meanings: (1) For LAP1: LDL disturbance (LAP2 in LDL mode); (2) For LAP2: Contamination signature possibly present
            * +400 - Saturation
            
            Example: suppose that one encounters the quality flag “109”. 109 = 100 + 9 means (1) that there is an ongoing wheel off-loading (+100), and (2) that the quality-related effects associated with +1 and +2 cannot occur even in principle for the kind of data that one is looking at.                       
</Caveats>
        <Parameter>
            <Name>n_e_good (qual_nel&gt; 0.2)</Name>
            <ParameterKey>ros_lap_nel_good</ParameterKey>
            <Description>Plasma density  which contains the highest time resolution cross-calibrated density data, 
when RPC-MIP is not delivering cross-calibrated density products. Quality value &gt; 0.2</Description>
            <Units>cm^-3</Units>
            <RenderingHints>
                <DisplayType>TimeSeries</DisplayType>
            </RenderingHints>
            <FillValue>0.0</FillValue>
        </Parameter> 
        <Parameter>
            <Name>n_e (nel)</Name>
            <ParameterKey>ros_lap_nel</ParameterKey>
            <Description>Plasma density which contains the highest time resolution cross-calibrated density data, 
when RPC-MIP is not delivering cross-calibrated density products</Description>
            <Ucd/>
            <Units>cm^-3</Units>
            <RenderingHints>
                <DisplayType>TimeSeries</DisplayType>
            </RenderingHints>
            <FillValue>-1.e+09</FillValue>
        </Parameter> 
        <Parameter>
            <Name>n_e : qual</Name>
            <ParameterKey>ros_lap_nel_q</ParameterKey>
            <Description>Quality value in the range 0 (worst) to 1 (best). Corresponds to goodness of fit or how well the model fits the data.</Description>
            <Ucd/>
            <Units/>             
            <RenderingHints>
                <DisplayType>TimeSeries</DisplayType>
            </RenderingHints>
            <FillValue></FillValue>
        </Parameter> 
        <Parameter>
            <Name>data source</Name>
            <ParameterKey>ros_lap_nel_s</ParameterKey>
            <Ucd/>
            <Units/>         
            <RenderingHints>
                <DisplayType>TimeSeries</DisplayType>
            </RenderingHints> 
             <FillValue></FillValue>
        </Parameter>
        <Parameter>
            <Name>quality flag</Name>
            <ParameterKey>ros_lap_nel_f</ParameterKey>
            <Description>Quality flag constructed as the sum of multiple terms, 
depending on what quality related effects are present. Each digit is either in 
the range 0 (best) to 7 (worst), or 9 (not used)</Description>
            <Ucd/>
            <Units/>         
            <RenderingHints>
                <DisplayType>TimeSeries</DisplayType>
            </RenderingHints> 
             <FillValue></FillValue>
        </Parameter>            
     </NumericalData>
</Spase>