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            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/datatype/details/257" xlink:actuate="onRequest">pH</gmx:Anchor>
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          <gmd:keyword>
            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/datatype/details/307" xlink:actuate="onRequest">SALINITY</gmx:Anchor>
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          <gmd:keyword>
            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/datatype/details/5" xlink:actuate="onRequest">total alkalinity</gmx:Anchor>
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          <gmd:keyword>
            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/datatype/details/400" xlink:actuate="onRequest">water depth</gmx:Anchor>
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          <gmd:keyword>
            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/datatype/details/373" xlink:actuate="onRequest">WATER TEMPERATURE</gmx:Anchor>
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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/63" xlink:actuate="onRequest">in situ</gmx:Anchor>
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          <gmd:keyword>
            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/obstype/details/35" xlink:actuate="onRequest">laboratory analyses</gmx:Anchor>
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            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/1738" xlink:actuate="onRequest">Texas A&amp;M University - Corpus Christi</gmx:Anchor>
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          <gmd:keyword>
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          <gmd:keyword>
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          <gmd:keyword>
            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/seaname/details/91" xlink:actuate="onRequest">North Atlantic Ocean</gmx:Anchor>
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            <gco:CharacterString>R/V Manta</gco:CharacterString>
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                    <gco:CharacterString>These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP).</gco:CharacterString>
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Sampling Instrument: CTD;
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Units: psu;
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Units: degrees C;
Observation Category: in situ;
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Units: N/A;
Observation Category: laboratory analysis;
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Sampling and Analyzing Method: We used purified m-cresol purple (mCP) obtained from Dr. Robert ByrneÕs lab (Patsavas et al., 2013) to measure pH (on total scale) at 25¡C in a water-jacketed flow cell on an Agilent 8453 spectrometer with the experimental setup similar to that in Carter et al. (2013). pH was calculated using the equation in Liu et al. (2011). One exception to the above pH analysis was that we used manual dye injection and unpurified mCP for the samples collected in November 2013, and an older version of pH equation (Clayton and Byrne, 1993) was used for samples collected on that trip.;
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Units: N/A;
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1 Sample for this measurement was drawn from water bottle but analysis not received.
2 Acceptable measurement.
3 Questionable measurement.
4 Bad measurement.
5 Not reported.
6 Mean of replicate measurements (N=2).
7 Manual chromatographic peak measurement.
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Units: micromole/kilogram;
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Units: micromole/kilogram;
Observation Category: laboratory analysis;
Sampling Instrument: DIC analyzer (Apollo Scitech Inc.);
Sampling and Analyzing Method: total dissolved inorganic carbon (DIC) was measured by infrared detection for acid-stripping CO2 on a DIC analyzer (Apollo Scitech Inc.) (Chen et al., 2015). Certified reference material (CRM) obtained from Dr. A. Dickson's lab at the Scripps Institution of Oceanography was used to calibrate and ensure the performance of the  DIC analyzer.;
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Units: N/A;
Observation Category: laboratory analysis;
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Sampling and Analyzing Method: WOCE BOTTLE QUALITY FLAG INFORMATION 1 Sample for this measurement was drawn from water bottle but analysis not received. 2 Acceptable measurement. 3 Questionable measurement. 4 Bad measurement. 5 Not reported. 6 Mean of replicate measurements (N=2). 7 Manual chromatographic peak measurement. 8 Irregular digital chromatographic peak integration. 9 Sample not drawn for this measurement from this bottle.</gco:CharacterString>
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Sampling Instrument: N/A</gco:CharacterString>
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