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NumericalData/CDPP-AMDA/SWARM-B/GNSS/swarmb-gps-all.xml 5.12 KB
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<?xml version="1.0" encoding="UTF-8"?>
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<Spase xmlns="http://www.spase-group.org/data/schema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.spase-group.org/data/schema http://amda.irap.omp.eu/public/schemas/spase-2_3_1.xsd">
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    <Version>2.3.1</Version>
    <NumericalData>
        <ResourceID>spase://CNES/NumericalData/CDPP-AMDA/SWARM-B/GNSS/swarmb-gps-all</ResourceID>
        <ResourceHeader>
            <ResourceName>tec</ResourceName>
            <AlternateName>total electron content</AlternateName>
            <ReleaseDate>2018-09-25T17:00:17Z</ReleaseDate>
            <Description>The signals transmitted by the Global Navigation Satellite System (GNSS) satellites are delayed 
by ionospheric/plasmaspheric electrons before reaching the Swarm GNSS antenna. From the 
GNSS signal delay we can estimate slant total electron content (STEC), which is defined as 
‘integrated’ electron density along the line of sight from Swarm to GNSS satellites.</Description>
            <Acknowledgement/> 
            <Contact>
                <PersonID>spase://CNES/Person/R.Haagmans</PersonID>
                <Role>ProjectScientist</Role>
            </Contact>
            <InformationURL>
                <Name>TEC dataset description</Name>
                <URL>https://earth.esa.int/web/guest/document-library/browse-document-library/-/article/swarm-level-2-tec-product-description</URL>                             
                <Description/>
            </InformationURL>           
        </ResourceHeader>           
        <AccessInformation>
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            <RepositoryID>spase://SMWG/Repository/CNES/CDPP-AMDA</RepositoryID>
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            <Availability>Online</Availability>
            <AccessRights>Open</AccessRights>
            <AccessURL>
                <Name>AMDA at CDPP</Name>
                <URL>http://amda.cdpp.eu</URL>
            </AccessURL> 
            <Format>NetCDF</Format>
        </AccessInformation>
        <ProviderName>ftp://swarm-diss.eo.esa.int</ProviderName>
        <ProviderResourceName>Level2daily/Entire_mission_data/TEC</ProviderResourceName>
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        <InstrumentID>spase://CNES/Instrument/CDPP-AMDA/SWARM-B/GNSS</InstrumentID>
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        <MeasurementType></MeasurementType>
        <TemporalDescription>
            <TimeSpan>
                <StartDate>2001-01-07T05:14:25Z</StartDate>
                <StopDate>2018-05-01T07:04:00Z</StopDate>
            </TimeSpan>
            <Cadence>PT1S</Cadence>
        </TemporalDescription>
        <ObservedRegion>Earth.Magnetosphere</ObservedRegion>
        <Caveats>It is recommended to use absolute VTEC data with corresponding elevation angles of the GPS 
rays of at least 50◦ . The recommendation is given since the uncertainty of the mapping function increases with decreasing elevation angle. 
Note that AMDA keeps STEC / VTEC data for the highest elevation angle only.
</Caveats>
        <Parameter>
            <Name>stec</Name>
            <ParameterKey>swb_stec</ParameterKey>
            <Description>Absolute slant TEC  from largest elevation GNSS satellite</Description>
            <Ucd/>
            <Units>TECU</Units>
            <UnitsConversion/>            
            <RenderingHints>
                <DisplayType>TimeSeries</DisplayType>
            </RenderingHints>           
            <FillValue/>          
        </Parameter> 
        <Parameter>
            <Name>vtec</Name>
            <ParameterKey>swb_vtec</ParameterKey>
            <Description>Absolute vertical TEC  from largest elevation GNSS satellite</Description>
            <Ucd/> 
            <Units>TECU</Units>
            <UnitsConversion/>            
            <RenderingHints>
                <DisplayType>TimeSeries</DisplayType>
            </RenderingHints>           
            <FillValue/>          
        </Parameter>  
        <Parameter>
            <Name>relative stec</Name>
            <ParameterKey>swb_stec_rel</ParameterKey>
            <Description>Relative slant TEC</Description>
            <Ucd/> 
            <Units>TECU</Units>
            <UnitsConversion/>            
            <RenderingHints>
                <DisplayType>TimeSeries</DisplayType>
            </RenderingHints>           
            <FillValue/>          
        </Parameter> 
        <Parameter>
            <Name>gps elevation angle</Name>
            <ParameterKey>swb_gps_elev</ParameterKey>
            <Description>gps elevation angle</Description>
            <Ucd/> 
            <Units>deg</Units>
            <UnitsConversion/>            
            <RenderingHints>
                <DisplayType>TimeSeries</DisplayType>
            </RenderingHints>           
            <FillValue/>          
        </Parameter> 
        <Parameter>
            <Name>gps number</Name>
            <ParameterKey>swb_gps_number</ParameterKey>
            <Description>gps number</Description>
            <Ucd/> 
            <Units/>
            <UnitsConversion/>            
            <RenderingHints>
                <DisplayType>TimeSeries</DisplayType>
            </RenderingHints>           
            <FillValue/>          
        </Parameter>                  
    </NumericalData>
</Spase>