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                <gco:CharacterString>Parameter or Variable: pCO2 (fCO2) autonomous;
Abbreviation: xCO2 dry;
Unit: umol/mol;
Observation type: Surface underway;
Measured or calculated: Measured;
Sampling instrument: Seawater pump;
Location of seawater intake: Hull;
Analyzing instrument: Dartcom-PML LivepCO2;
Equilibrator type: Non Dispersive IR Sensor;
Equilibrator volume: 2.5 L;
Is the equilibrator vented or not: yes;
Water flow rate: 1.6 L/min;
Gas flow rate: 200 mL/min;
SEA CO2 gas detector manufacturer: Licor, Inc;
SEA CO2 gas detector model: LI-840;
SEA CO2 gas detector resolution: Accuracy: les than 2 micro-atm fCO2;
SEA CO2 gas detector uncertainty: Precision: les than 0.5 micro-atm fCO2;
Standard gas manufacturer: BOC gases Ltd.;
Standard gas concentration: 254.7, 376.7, 472.1, ppmv CO2 in synthetic air. These are calibrated in lab against NOAA standards (nos:CA07398, CA07305, CB08944) with WMO X2007 certification;
Researcher name: Vassilis Kitidis;
Researcher institution: Plymouth Marine Laboratory</gco:CharacterString>
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                <gco:CharacterString>Parameter or Variable: Sea Surface Temperature;
Abbreviation: SST_C;
Unit: degrees celcius;
Observation type: Surface Underway;
Analyzing instrument: SeaBird Electronics;
Detailed sampling and analyzing information: SBE45;
Uncertainty: Accuracy: 0.001C; Precision: 0.001C;
Researcher name: Vassilis Kitidis;
Researcher institution: Plymouth Marine Laboratory</gco:CharacterString>
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                <gco:CharacterString>Parameter or Variable: Sea Surface Salinity;
Abbreviation: SSS;
Observation type: Surface Underway;
Analyzing instrument: SeaBird Electronics;
Detailed sampling and analyzing information: SBE45;
Uncertainty: Accuracy: 0.002; Precision: 0.002;
Researcher name: Vassilis Kitidis;
Researcher institution: Plymouth Marine Laboratory</gco:CharacterString>
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                <gco:CharacterString>Parameter or Variable: Pressure in Equilibrator;
Abbreviation: Pressure_equil;
Unit: hPa;
Observation type: Surface Underway;
Analyzing instrument: Druck Gmbh;
Detailed sampling and analyzing information: PTX7517-3257;
Uncertainty: Accuracy: 0.1 hPa; Precision: 0.1 hPa;
Researcher name: Ute Schuster;
Researcher institution: University of Exeter, UK</gco:CharacterString>
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            <gco:CharacterString>carbon dioxide (CO2) gas analyzer</gco:CharacterString>
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            <gco:CharacterString>measures gaseous carbon dioxide

Carbon dioxide gas analyzer has often been referred to as LI-COR, because a lot of researchers choose to use products manufactured by LI-COR incorporation for their carbon dioxide measurement. The main component of a carbon dioxide analyzer is a nondispersive infrared (NDIR) spectroscopic sensors to detect CO2 in a gaseous environment by its characteristic absorption.

Carbon dioxide (CO2) gas analyzer works together with carbon dioxide (CO2) equilibrator (insttypes_id 184) to measure carbon dioxide in the water.

To measure water carbon dioxide, water needs to be continuously supplied to a showerhead inside an equilibrator. As the water flows through the equilibrator chamber, dissolved carbon dioxide exchanges quickly with air in the headspace. This air is then sampled by the carbon dioxide analyzer to determine the mole fraction of CO2 in water.</gco:CharacterString>
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            <gco:CharacterString>extracts dissolved CO2 from water

A carbon dioxide equilibrator is usually in the shape of a vertical tube, with a showerhead on the top, some headspace, a lot of beads to increase the surface exchange area between water and air, a water seal device at the bottom to allow water to overflow, but prevents air exchange between inside and outside.

Carbon dioxide (CO2) equilibrator works together with carbon dioxide (CO2) gas analyzer (insttypes_id 183) to measure carbon dioxide in the water.

To measure water carbon dioxide, water needs to be continuously supplied to a showerhead inside an equilibrator. As the water flows through the equilibrator chamber, dissolved carbon dioxide exchanges quickly with air in the headspace. This air is then sampled by the carbon dioxide analyzer to determine the mole fraction of CO2 in water.</gco:CharacterString>
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        <gmi:MI_Platform id="plat_a9d5">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>JAMES CLARK ROSS</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:description>
            <gco:CharacterString>Updated information added below from ICES for the vessel JAMES CLARK ROSS from UNITED KINGDOM

Code : 74JC
Name : JAMES CLARK ROSS
Flag : UNITED KINGDOM - GB (ISO Country Code)
Call Sign : ZDLP
Platform Class : Research vessel
IMO : 8904496
Commissioned Date : 1991
Current Length : 99.04
Built : 1991
Notes : active as of 2010
Information Source :
http://www.antarctica.ac.uk/living_and_working/research_ships/rrs_james_clark_ross/technical_data.php (URL)
Lloyds URL : http://www.seasearcher.com/lmiu/vessels/overview.htm?vesselID=230076</gco:CharacterString>
          </gmi:description>
          <gmi:instrument gco:nilReason="missing" />
        </gmi:MI_Platform>
      </gmi:platform>
    </gmi:MI_AcquisitionInformation>
  </gmi:acquisitionInformation>
</gmi:MI_Metadata>