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These data were collected by Rik Wanninkhof of NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) and John L. Bullister of NOAA Pacific Marine Environmental Laboratory (PMEL) as part of the OACES93_A16N dataset. CDIAC associated the following cruise ID(s) with this dataset: OACES93

The World Ocean Circulation Experiment (WOCE) was a major component of the World Climate Research Program with the overall goal of better understanding the ocean's role in climate and climatic changes resulting from both natural and anthropogenic causes. The CO2 survey took advantage of the sampling opportunities provided by the WOCE Hydrographic Program (WHP) cruises during this period between 1990 and 1998. The final collection covers approximately 23,000 stations from 94 WOCE cruises.</gco:CharacterString>
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            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/insttype/details/8" xlink:actuate="onRequest">CTD</gmx:Anchor>
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            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/obstype/details/52" xlink:actuate="onRequest">discrete sample</gmx:Anchor>
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          <gmd:keyword>
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          <gmd:keyword>
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          <gmd:keyword>
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          <gmd:keyword>
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          <gmd:keyword>
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          <gmd:keyword>
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            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="platform">platform</gmd:MD_KeywordTypeCode>
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Abbreviation: DIC;
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Measured or calculated: Calculated;
Replicate information: Replicates were taken from the deepest Niskin sample and run at different times during the cell. No systematic difference between the replicates was observed. SOMMA AOML-1 had an average absolute difference from the mean of 1 Î¼mol/kg with a standard deviation of 1.9 Î¼mol/kg for 40 sets of triplicates.;
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Type of titration: Gran;
Cell type (open or closed): Closed;
Curve fitting method: The titration system used for TALK measurements consisted of Metrohm 665 Dosimat titrator and Orion 720A pH meter that controlled by a PC.;
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Measured or calculated: Measured;
Temperature of pH measurement: 20 deg.C;
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In-situ / Manipulation / Response variable: in-situ observation;
Measured or calculated: Measured;
Seawater volume: 500 mL;
Headspace volume: 60 mL;
Temperature of measurement: 20 deg.C;
Detailed sampling and analyzing information: The discrete fCO2 system used was described in Chipman et al. (1993) and in Wanninkhof and Thoning (1993) and Chen et al. (1995). This system used LI-COR model 6262 non-dispersive infrared analyzer.;
Method reference: Chipman, D.W., J. Marra, and T. Takahashi (1993): Primary production at 47N and 20W in the North Atlantic Ocean: A comparison between the 14C incubation method and mixed layer carbon budget observations. Deep-Sea Res. II, 40, 151B169. Wanninkhof, R., and K. Thoning (1993): Surface water fCO2 measurements using continuous and discrete sampling methods. Mar. Chem. 44, 189B204.</gco:CharacterString>
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            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: OXYGEN;
Abbreviation: OXYGEN;
Unit: UMOL/KG;
Controlled vocabulary name: DISSOLVED OXYGEN;
In-situ / Manipulation / Response variable: in-situ observation</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: PHSPHT;
Abbreviation: PHSPHT;
Unit: UMOL/KG;
Controlled vocabulary name: phosphate;
In-situ / Manipulation / Response variable: in-situ observation</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: NITRIT;
Abbreviation: NITRIT;
Unit: UMOL/KG;
Controlled vocabulary name: NITRITE;
In-situ / Manipulation / Response variable: in-situ observation</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: NITRAT;
Abbreviation: NITRAT;
Unit: UMOL/KG;
Controlled vocabulary name: NITRATE;
In-situ / Manipulation / Response variable: in-situ observation</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: SILCAT;
Abbreviation: SILCAT;
Unit: UMOL/KG;
Controlled vocabulary name: silicate;
In-situ / Manipulation / Response variable: in-situ observation</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: TCARBN;
Abbreviation: TCARBN;
Unit: UMOL/KG;
Controlled vocabulary name: DISSOLVED INORGANIC CARBON (DIC);
In-situ / Manipulation / Response variable: in-situ observation</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: ALKALI;
Abbreviation: ALKALI;
Unit: UMOL/KG;
Controlled vocabulary name: total alkalinity;
In-situ / Manipulation / Response variable: in-situ observation</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: FCO2;
Abbreviation: FCO2;
Unit: UATM@20C;
Controlled vocabulary name: partial pressure of carbon dioxide - water;
In-situ / Manipulation / Response variable: in-situ observation</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: PH;
Abbreviation: PH;
Unit: TOT@20C;
Controlled vocabulary name: pH;
In-situ / Manipulation / Response variable: in-situ observation</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: CFC-11;
Abbreviation: CFC-11;
Unit: PMOL/KG;
Controlled vocabulary name: CHLOROFLUOROCARBON-11 (CFC-11);
In-situ / Manipulation / Response variable: in-situ observation</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: CFC-12;
Abbreviation: CFC-12;
Unit: PMOL/KG;
Controlled vocabulary name: CHLOROFLUOROCARBON-12 (CFC-12);
In-situ / Manipulation / Response variable: in-situ observation</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: CHLORA;
Abbreviation: CHLORA;
Unit: UG/L;
Controlled vocabulary name: CHLOROPHYLL A;
In-situ / Manipulation / Response variable: in-situ observation</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: PHAEO;
Abbreviation: PHAEO;
Unit: UG/L;
Controlled vocabulary name: PHAEOPHYTIN;
In-situ / Manipulation / Response variable: in-situ observation</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
        </gmd:LI_Lineage>
      </gmd:lineage>
    </gmd:DQ_DataQuality>
  </gmd:dataQualityInfo>
  <gmd:dataQualityInfo>
    <gmd:DQ_DataQuality>
      <gmd:scope>
        <gmd:DQ_Scope>
          <gmd:level>
            <gmd:MD_ScopeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_ScopeCode" codeListValue="repository">repository</gmd:MD_ScopeCode>
          </gmd:level>
          <gmd:levelDescription>
            <gmd:MD_ScopeDescription>
              <gmd:other>
                <gco:CharacterString>NOAA National Centers for Environmental Information</gco:CharacterString>
              </gmd:other>
            </gmd:MD_ScopeDescription>
          </gmd:levelDescription>
        </gmd:DQ_Scope>
      </gmd:scope>
      <gmd:lineage>
        <gmd:LI_Lineage>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>NOAA created the National Centers for Environmental Information (NCEI) by merging NOAA's National Climatic Data Center (NCDC), National Geophysical Data Center (NGDC), and National Oceanographic Data Center (NODC), including the National Coastal Data Development Center (NCDDC), per the Consolidated and Further Continuing Appropriations Act, 2015, Public Law 113-235. NCEI launched publicly on April 22, 2015.</gco:CharacterString>
              </gmd:description>
              <gmd:dateTime>
                <gco:DateTime>2015-04-22T00:00:00</gco:DateTime>
              </gmd:dateTime>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
        </gmd:LI_Lineage>
      </gmd:lineage>
    </gmd:DQ_DataQuality>
  </gmd:dataQualityInfo>
  <gmd:metadataMaintenance>
    <gmd:MD_MaintenanceInformation>
      <gmd:maintenanceAndUpdateFrequency>
        <gmd:MD_MaintenanceFrequencyCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_MaintenanceFrequencyCode" codeListValue="asNeeded">asNeeded</gmd:MD_MaintenanceFrequencyCode>
      </gmd:maintenanceAndUpdateFrequency>
      <gmd:maintenanceNote>
        <gco:CharacterString>Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness.</gco:CharacterString>
      </gmd:maintenanceNote>
      <gmd:contact>
        <gmd:CI_ResponsibleParty>
          <gmd:organisationName>
            <gco:CharacterString>NOAA National Centers for Environmental Information</gco:CharacterString>
          </gmd:organisationName>
          <gmd:role>
            <gmd:CI_RoleCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_RoleCode" codeListValue="custodian">custodian</gmd:CI_RoleCode>
          </gmd:role>
        </gmd:CI_ResponsibleParty>
      </gmd:contact>
    </gmd:MD_MaintenanceInformation>
  </gmd:metadataMaintenance>
  <gmi:acquisitionInformation>
    <gmi:MI_AcquisitionInformation id="AMS">
      <gmi:instrument>
        <gmi:MI_Instrument id="inst_beec">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>bottle</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>bottle</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>any type of water bottle sampling device

Generic name for water collection device; usually used to determine temperature, salinity and provide water aliquots for measurement of a wide range of parameters; often referred to by a specific type of water sampling bottle, such as a Nansen or Niskin bottle.</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:instrument>
        <gmi:MI_Instrument id="inst_bee7">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>CTD</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>CTD</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>Conductivity-Temperature-Depth probe</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:platform>
        <gmi:MI_Platform id="plat_a5b4">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>NOAA Ship Malcolm Baldrige</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:description>
            <gco:CharacterString>Title: NOAA Ship
Flag: United States of America
Vessel Type: Research Vessel (Oceanographic)
DOB: 1968
IMO: 6901907
Hull Classification: OSS 03
Former Name: NOAA Ship RESEARCHER (1988)
Decommissioned by NOAA: 1996</gco:CharacterString>
          </gmi:description>
          <gmi:instrument gco:nilReason="missing" />
        </gmi:MI_Platform>
      </gmi:platform>
    </gmi:MI_AcquisitionInformation>
  </gmi:acquisitionInformation>
</gmi:MI_Metadata>