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            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/obstype/details/18" xlink:actuate="onRequest">profile</gmx:Anchor>
          </gmd:keyword>
          <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="theme">theme</gmd:MD_KeywordTypeCode>
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          <gmd:thesaurusName>
            <gmd:CI_Citation>
              <gmd:title>
                <gco:CharacterString>NODC OBSERVATION TYPES THESAURUS</gco:CharacterString>
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              <gmd:date gco:nilReason="inapplicable" />
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          </gmd:thesaurusName>
        </gmd:MD_Keywords>
      </gmd:descriptiveKeywords>
      <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/platform/details/12560" xlink:actuate="onRequest">NOAA Ship Reuben Lasker</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/platform/details/10884" xlink:actuate="onRequest">R/V Marcus G. Langseth</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/platform/details/12901" xlink:actuate="onRequest">R/V Sally Ride</gmx:Anchor>
          </gmd:keyword>
          <gmd:type>
            <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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          <gmd:thesaurusName>
            <gmd:CI_Citation>
              <gmd:title>
                <gco:CharacterString>NODC PLATFORM NAMES THESAURUS</gco:CharacterString>
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              <gmd:date gco:nilReason="inapplicable" />
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        </gmd:MD_Keywords>
      </gmd:descriptiveKeywords>
      <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/983" xlink:actuate="onRequest">Scripps Institution of Oceanography</gmx:Anchor>
          </gmd:keyword>
          <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="dataCentre">dataCentre</gmd:MD_KeywordTypeCode>
          </gmd:type>
          <gmd:thesaurusName>
            <gmd:CI_Citation>
              <gmd:title>
                <gco:CharacterString>NODC COLLECTING INSTITUTION NAMES THESAURUS</gco:CharacterString>
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              <gmd:date gco:nilReason="inapplicable" />
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          </gmd:thesaurusName>
        </gmd:MD_Keywords>
      </gmd:descriptiveKeywords>
      <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/983" xlink:actuate="onRequest">Scripps Institution of Oceanography</gmx:Anchor>
          </gmd:keyword>
          <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="dataCentre">dataCentre</gmd:MD_KeywordTypeCode>
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            <gmd:CI_Citation>
              <gmd:title>
                <gco:CharacterString>NODC SUBMITTING INSTITUTION NAMES THESAURUS</gco:CharacterString>
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              <gmd:date gco:nilReason="inapplicable" />
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        </gmd:MD_Keywords>
      </gmd:descriptiveKeywords>
      <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/project/details/675" xlink:actuate="onRequest">US DOC; NOAA; Office of Oceanic and Atmospheric Research; Ocean Acidification Program (OAP)</gmx:Anchor>
          </gmd:keyword>
          <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="project">project</gmd:MD_KeywordTypeCode>
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          <gmd:thesaurusName>
            <gmd:CI_Citation>
              <gmd:title>
                <gco:CharacterString>NODC PROJECT NAMES THESAURUS</gco:CharacterString>
              </gmd:title>
              <gmd:date gco:nilReason="inapplicable" />
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          </gmd:thesaurusName>
        </gmd:MD_Keywords>
      </gmd:descriptiveKeywords>
      <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/seaname/details/93" xlink:actuate="onRequest">North Pacific Ocean</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/seaname/details/217" xlink:actuate="onRequest">West Coast - US/Canada</gmx:Anchor>
          </gmd:keyword>
          <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="place">place</gmd:MD_KeywordTypeCode>
          </gmd:type>
          <gmd:thesaurusName>
            <gmd:CI_Citation>
              <gmd:title>
                <gco:CharacterString>NODC SEA AREA NAMES THESAURUS</gco:CharacterString>
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        </gmd:MD_Keywords>
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      <gmd:descriptiveKeywords>
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            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="theme">theme</gmd:MD_KeywordTypeCode>
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            <gmd:CI_Citation>
              <gmd:title>
                <gco:CharacterString>WMO_CategoryCode</gco:CharacterString>
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                  <gmd:date>
                    <gco:Date>2012-09-15</gco:Date>
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                  <gmd:dateType>
                    <gmd:CI_DateTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="publication">publication</gmd:CI_DateTypeCode>
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        </gmd:MD_Keywords>
      </gmd:descriptiveKeywords>
      <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
          <gmd:keyword>
            <gco:CharacterString>MGL2212</gco:CharacterString>
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          <gmd:keyword>
            <gco:CharacterString>RL-24-04</gco:CharacterString>
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          <gmd:keyword>
            <gco:CharacterString>SR2315</gco:CharacterString>
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          <gmd:keyword>
            <gco:CharacterString>SR2420</gco:CharacterString>
          </gmd:keyword>
          <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="project">project</gmd:MD_KeywordTypeCode>
          </gmd:type>
          <gmd:thesaurusName>
            <gmd:CI_Citation>
              <gmd:title>
                <gco:CharacterString>Cruise ID</gco:CharacterString>
              </gmd:title>
              <gmd:date gco:nilReason="inapplicable" />
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          </gmd:thesaurusName>
        </gmd:MD_Keywords>
      </gmd:descriptiveKeywords>
      <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
          <gmd:keyword>
            <gco:CharacterString>33H320221026</gco:CharacterString>
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          <gmd:keyword>
            <gco:CharacterString>33P420230723</gco:CharacterString>
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          <gmd:keyword>
            <gco:CharacterString>33P420241101</gco:CharacterString>
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          <gmd:keyword>
            <gco:CharacterString>33UD20240329</gco:CharacterString>
          </gmd:keyword>
          <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="project">project</gmd:MD_KeywordTypeCode>
          </gmd:type>
          <gmd:thesaurusName>
            <gmd:CI_Citation>
              <gmd:title>
                <gco:CharacterString>EXPOCODE</gco:CharacterString>
              </gmd:title>
              <gmd:date gco:nilReason="inapplicable" />
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          </gmd:thesaurusName>
        </gmd:MD_Keywords>
      </gmd:descriptiveKeywords>
      <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
          <gmd:keyword>
            <gco:CharacterString>Ocean Acidification Program (OAP)</gco:CharacterString>
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          <gmd:keyword>
            <gco:CharacterString>Ocean Carbon and Acidification Data System (OCADS) Project</gco:CharacterString>
          </gmd:keyword>
          <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="project">project</gmd:MD_KeywordTypeCode>
          </gmd:type>
          <gmd:thesaurusName>
            <gmd:CI_Citation>
              <gmd:title>
                <gco:CharacterString>Ocean Acidification Search Keywords</gco:CharacterString>
              </gmd:title>
              <gmd:date gco:nilReason="inapplicable" />
            </gmd:CI_Citation>
          </gmd:thesaurusName>
        </gmd:MD_Keywords>
      </gmd:descriptiveKeywords>
      <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
          <gmd:keyword>
            <gco:CharacterString>Coastal</gco:CharacterString>
          </gmd:keyword>
          <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="project">project</gmd:MD_KeywordTypeCode>
          </gmd:type>
          <gmd:thesaurusName>
            <gmd:CI_Citation>
              <gmd:title>
                <gco:CharacterString>Reference Section ID</gco:CharacterString>
              </gmd:title>
              <gmd:date gco:nilReason="inapplicable" />
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          </gmd:thesaurusName>
        </gmd:MD_Keywords>
      </gmd:descriptiveKeywords>
      <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
          <gmd:keyword>
            <gco:CharacterString>OceanSITES (OceanSITES)</gco:CharacterString>
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          <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="project">project</gmd:MD_KeywordTypeCode>
          </gmd:type>
          <gmd:thesaurusName>
            <gmd:CI_Citation>
              <gmd:title>
                <gco:CharacterString>Research Projects</gco:CharacterString>
              </gmd:title>
              <gmd:date gco:nilReason="inapplicable" />
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          </gmd:thesaurusName>
        </gmd:MD_Keywords>
      </gmd:descriptiveKeywords>
      <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/4eab7956-e59e-4615-8d5c-39a16faa1f27" xlink:actuate="onRequest">EARTH SCIENCE &gt; OCEANS &gt; OCEAN CHEMISTRY &gt; ALKALINITY</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/7989eae1-8ea3-4039-af0c-9130de145449" xlink:actuate="onRequest">EARTH SCIENCE &gt; OCEANS &gt; OCEAN CHEMISTRY &gt; CHLOROPHYLL</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/d9b4f30d-bddd-4888-b66b-07d2dc09708b" xlink:actuate="onRequest">EARTH SCIENCE &gt; OCEANS &gt; OCEAN CHEMISTRY &gt; INORGANIC CARBON</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/4fde380a-38c5-4d46-bc80-4f2515a43983" xlink:actuate="onRequest">EARTH SCIENCE &gt; OCEANS &gt; OCEAN CHEMISTRY &gt; NITRATE</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/941410da-0b7f-4ec6-a718-212194ced13f" xlink:actuate="onRequest">EARTH SCIENCE &gt; OCEANS &gt; OCEAN CHEMISTRY &gt; NITRITE</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/4433600b-f323-458a-b295-352f939aab6b" xlink:actuate="onRequest">EARTH SCIENCE &gt; OCEANS &gt; OCEAN CHEMISTRY &gt; PH</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/0b513d8c-bfd3-44ee-976e-42757b8375a2" xlink:actuate="onRequest">EARTH SCIENCE &gt; OCEANS &gt; OCEAN CHEMISTRY &gt; PHOSPHATE</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/c91c8879-1b29-48e3-b4cd-a238af66cdaf" xlink:actuate="onRequest">EARTH SCIENCE &gt; OCEANS &gt; OCEAN CHEMISTRY &gt; SILICATE</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/46206e8c-8def-406f-9e62-da4e74633a58" xlink:actuate="onRequest">EARTH SCIENCE &gt; OCEANS &gt; OCEAN TEMPERATURE &gt; WATER TEMPERATURE</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/7e95b5fc-1d58-431a-af36-948b29fa870d" xlink:actuate="onRequest">EARTH SCIENCE &gt; OCEANS &gt; SALINITY/DENSITY &gt; SALINITY</gmx:Anchor>
          </gmd:keyword>
          <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="theme">theme</gmd:MD_KeywordTypeCode>
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            <gmd:CI_Citation>
              <gmd:title>
                <gco:CharacterString>Global Change Master Directory (GCMD) Science Keywords</gco:CharacterString>
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                <gmd:CI_Date>
                  <gmd:date>
                    <gco:Date>2026</gco:Date>
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                    <gmd:CI_DateTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="revision">revision</gmd:CI_DateTypeCode>
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              <gmd:edition>
                <gco:CharacterString>24</gco:CharacterString>
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                            <gco:CharacterString>Greenbelt</gco:CharacterString>
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                      </gmd:address>
                      <gmd:onlineResource>
                        <gmd:CI_OnlineResource>
                          <gmd:linkage>
                            <gmd:URL>https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords</gmd:URL>
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                            <gco:CharacterString>HTTPS</gco:CharacterString>
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            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="theme">theme</gmd:MD_KeywordTypeCode>
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          <gmd:thesaurusName>
            <gmd:CI_Citation>
              <gmd:title>
                <gco:CharacterString>OCADS Study Type</gco:CharacterString>
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            <gco:CharacterString>CHLA_UG_L</gco:CharacterString>
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          <gmd:keyword>
            <gco:CharacterString>CTD_TEMPERATURE</gco:CharacterString>
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          <gmd:keyword>
            <gco:CharacterString>NITRATE_UMOL_L</gco:CharacterString>
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          <gmd:keyword>
            <gco:CharacterString>NITRITE_UMOL_L</gco:CharacterString>
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          <gmd:keyword>
            <gco:CharacterString>PHAEO_UG_L</gco:CharacterString>
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          <gmd:keyword>
            <gco:CharacterString>PHOSPHATE_UMOL_L</gco:CharacterString>
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          <gmd:keyword>
            <gco:CharacterString>PH_TOTAL_SCALE</gco:CharacterString>
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          <gmd:keyword>
            <gco:CharacterString>SILICATE_UMOL_L</gco:CharacterString>
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          <gmd:keyword>
            <gco:CharacterString>TA_UMOL_KG</gco:CharacterString>
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          <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="theme">theme</gmd:MD_KeywordTypeCode>
          </gmd:type>
          <gmd:thesaurusName>
            <gmd:CI_Citation>
              <gmd:title>
                <gco:CharacterString>Provider Variable Abbreviations</gco:CharacterString>
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              <gmd:date gco:nilReason="inapplicable" />
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          </gmd:thesaurusName>
        </gmd:MD_Keywords>
      </gmd:descriptiveKeywords>
      <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/79f76e22-ae42-450d-8bed-d05a800f6ea0" xlink:actuate="onRequest">AUTOANALYZER &gt; AUTOANALYZER</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/7aecabfb-0047-484f-8396-efc0da16bc20" xlink:actuate="onRequest">CO2 ANALYZERS &gt; CO2 ANALYZERS</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/01cc0beb-7c9a-40ed-ad86-0661b41aee53" xlink:actuate="onRequest">CTD &gt; Conductivity, Temperature, Depth</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/b79c7e06-cd07-442f-bf12-2019cd71c201" xlink:actuate="onRequest">NISKIN BOTTLES</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/fdcfecd6-9731-450e-94e8-5bc4c04e22a2" xlink:actuate="onRequest">OXYGEN METERS &gt; OXYGEN METERS</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/5c38595e-5e7d-4513-9f0e-aa9b5f6b139f" xlink:actuate="onRequest">PH METERS &gt; PH METERS</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/ed79ec7b-a2df-4948-9877-b75e1fcb8782" xlink:actuate="onRequest">SALINOMETERS</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/aa953a14-4581-47f8-a5b3-c8dd50904ee0" xlink:actuate="onRequest">TEMPERATURE SENSORS &gt; TEMPERATURE SENSORS</gmx:Anchor>
          </gmd:keyword>
          <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="instrument">instrument</gmd:MD_KeywordTypeCode>
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                <gco:CharacterString>Global Change Master Directory (GCMD) Instrument Keywords</gco:CharacterString>
              </gmd:title>
              <gmd:date>
                <gmd:CI_Date>
                  <gmd:date>
                    <gco:Date>2026</gco:Date>
                  </gmd:date>
                  <gmd:dateType>
                    <gmd:CI_DateTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="revision">revision</gmd:CI_DateTypeCode>
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                </gmd:CI_Date>
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                            <gco:CharacterString>Greenbelt</gco:CharacterString>
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                          <gmd:administrativeArea>
                            <gco:CharacterString>MD</gco:CharacterString>
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                      </gmd:address>
                      <gmd:onlineResource>
                        <gmd:CI_OnlineResource>
                          <gmd:linkage>
                            <gmd:URL>https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords</gmd:URL>
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                          <gmd:protocol>
                            <gco:CharacterString>HTTPS</gco:CharacterString>
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                          <gmd:name>
                            <gco:CharacterString>GCMD Keyword Forum Page</gco:CharacterString>
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                          <gmd:description>
                            <gco:CharacterString>Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords</gco:CharacterString>
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                          </gmd:function>
                        </gmd:CI_OnlineResource>
                      </gmd:onlineResource>
                    </gmd:CI_Contact>
                  </gmd:contactInfo>
                  <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>
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                </gmd:CI_ResponsibleParty>
              </gmd:citedResponsibleParty>
            </gmd:CI_Citation>
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      </gmd:descriptiveKeywords>
      <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/1bb21d0f-bf48-42b5-8e09-cc0d58407e4a" xlink:actuate="onRequest">Ships</gmx:Anchor>
          </gmd:keyword>
          <gmd:type>
            <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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          <gmd:thesaurusName>
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                <gmd:CI_Date>
                  <gmd:date>
                    <gco:Date>2026</gco:Date>
                  </gmd:date>
                  <gmd:dateType>
                    <gmd:CI_DateTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="revision">revision</gmd:CI_DateTypeCode>
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                </gmd:CI_Date>
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                        <gmd:CI_Address>
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                            <gco:CharacterString>Greenbelt</gco:CharacterString>
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                          <gmd:administrativeArea>
                            <gco:CharacterString>MD</gco:CharacterString>
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                        </gmd:CI_Address>
                      </gmd:address>
                      <gmd:onlineResource>
                        <gmd:CI_OnlineResource>
                          <gmd:linkage>
                            <gmd:URL>https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords</gmd:URL>
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                          <gmd:protocol>
                            <gco:CharacterString>HTTPS</gco:CharacterString>
                          </gmd:protocol>
                          <gmd:name>
                            <gco:CharacterString>GCMD Keyword Forum Page</gco:CharacterString>
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                          <gmd:description>
                            <gco:CharacterString>Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 21. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords</gco:CharacterString>
                          </gmd:description>
                          <gmd:function>
                            <gmd:CI_OnLineFunctionCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="information">information</gmd:CI_OnLineFunctionCode>
                          </gmd:function>
                        </gmd:CI_OnlineResource>
                      </gmd:onlineResource>
                    </gmd:CI_Contact>
                  </gmd:contactInfo>
                  <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>
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            </gmd:CI_Citation>
          </gmd:thesaurusName>
        </gmd:MD_Keywords>
      </gmd:descriptiveKeywords>
      <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://vocab.ices.dk/services/pox/GetCodeDetail/SHIPC/33H3" xlink:actuate="onRequest">Marcus G. Langseth (call sign: WDC6698, ICES code: 33H3, 2005-)</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://vocab.ices.dk/services/pox/GetCodeDetail/SHIPC/33UD" xlink:actuate="onRequest">REUBEN LASKER (call sign: WTEG, ICES code: 33UD, 2014-)</gmx:Anchor>
          </gmd:keyword>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://vocab.ices.dk/services/pox/GetCodeDetail/SHIPC/33P4" xlink:actuate="onRequest">SALLY RIDE (call sign: WSAF, ICES code: 33P4, 2016-)</gmx:Anchor>
          </gmd:keyword>
          <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="platform">platform</gmd:MD_KeywordTypeCode>
          </gmd:type>
          <gmd:thesaurusName>
            <gmd:CI_Citation>
              <gmd:title>
                <gco:CharacterString>ICES/SeaDataNet Ship Codes</gco:CharacterString>
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              <gmd:date gco:nilReason="inapplicable" />
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        </gmd:MD_Keywords>
      </gmd:descriptiveKeywords>
      <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
          <gmd:keyword>
            <gmx:Anchor xlink:href="https://cmr.earthdata.nasa.gov/kms/concept/5488b1cc-08b2-41cf-9bd2-4a2cdd0990de" xlink:actuate="onRequest">OCEAN &gt; PACIFIC OCEAN &gt; NORTH PACIFIC OCEAN</gmx:Anchor>
          </gmd:keyword>
          <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="place">place</gmd:MD_KeywordTypeCode>
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                    <gco:Date>2026</gco:Date>
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                    <gmd:CI_DateTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="revision">revision</gmd:CI_DateTypeCode>
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                      <gmd:address>
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                          <gmd:city>
                            <gco:CharacterString>Greenbelt</gco:CharacterString>
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                          <gmd:administrativeArea>
                            <gco:CharacterString>MD</gco:CharacterString>
                          </gmd:administrativeArea>
                        </gmd:CI_Address>
                      </gmd:address>
                      <gmd:onlineResource>
                        <gmd:CI_OnlineResource>
                          <gmd:linkage>
                            <gmd:URL>https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords</gmd:URL>
                          </gmd:linkage>
                          <gmd:protocol>
                            <gco:CharacterString>HTTPS</gco:CharacterString>
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                          <gmd:function>
                            <gmd:CI_OnLineFunctionCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_OnLineFunctionCode" codeListValue="information">information</gmd:CI_OnLineFunctionCode>
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                        </gmd:CI_OnlineResource>
                      </gmd:onlineResource>
                    </gmd:CI_Contact>
                  </gmd:contactInfo>
                  <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>
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      </gmd:descriptiveKeywords>
      <gmd:descriptiveKeywords>
        <gmd:MD_Keywords>
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            <gco:CharacterString>WGS 84</gco:CharacterString>
          </gmd:keyword>
          <gmd:type>
            <gmd:MD_KeywordTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_KeywordTypeCode" codeListValue="place">place</gmd:MD_KeywordTypeCode>
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          <gmd:thesaurusName>
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                <gco:CharacterString>Provider Geographic Names</gco:CharacterString>
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          </gmd:thesaurusName>
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      <gmd:resourceConstraints>
        <gmd:MD_Constraints>
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      </gmd:resourceConstraints>
      <gmd:resourceConstraints xlink:title="NCEI Data Citation Statement">
        <gmd:MD_LegalConstraints>
          <gmd:useConstraints>
            <gmd:MD_RestrictionCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_RestrictionCode" codeListValue="otherRestrictions">otherRestrictions</gmd:MD_RestrictionCode>
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        </gmd:MD_LegalConstraints>
      </gmd:resourceConstraints>
      <gmd:resourceConstraints>
        <gmd:MD_LegalConstraints>
          <gmd:useLimitation>
            <gco:CharacterString>Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives.</gco:CharacterString>
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        </gmd:MD_LegalConstraints>
      </gmd:resourceConstraints>
      <gmd:resourceConstraints>
        <gmd:MD_LegalConstraints>
          <gmd:accessConstraints>
            <gmd:MD_RestrictionCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_RestrictionCode" codeListValue="otherRestrictions">otherRestrictions</gmd:MD_RestrictionCode>
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          <gmd:otherConstraints>
            <gco:CharacterString>Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.</gco:CharacterString>
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        </gmd:MD_LegalConstraints>
      </gmd:resourceConstraints>
      <gmd:resourceConstraints xlink:title="Data License Statement">
        <gmd:MD_LegalConstraints>
          <gmd:useConstraints>
            <gmd:MD_RestrictionCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#MD_RestrictionCode" codeListValue="license">license</gmd:MD_RestrictionCode>
          </gmd:useConstraints>
          <gmd:otherConstraints>
            <gmx:Anchor xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:actuate="onRequest" xlink:title="CC-BY-4.0">This dataset is licensed under the Creative Commons Attribution 4.0 International (CC BY 4.0) License.</gmx:Anchor>
          </gmd:otherConstraints>
          <gmd:otherConstraints>
            <gmx:Anchor xlink:href="https://spdx.org/licenses/CC-BY-4.0" xlink:actuate="onRequest" xlink:title="CC-BY-4.0">SPDX License: Creative Commons Attribution 4.0 International (CC-BY-4.0)</gmx:Anchor>
          </gmd:otherConstraints>
        </gmd:MD_LegalConstraints>
      </gmd:resourceConstraints>
      <gmd:aggregationInfo>
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                <gmd:CI_Date>
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                    <gco:Date>2022</gco:Date>
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                    <gmd:CI_Contact>
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                        <gmd:CI_OnlineResource>
                          <gmd:linkage>
                            <gmd:URL>https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/Coastal/CCE1_122W_33N.html</gmd:URL>
                          </gmd:linkage>
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                <gmd:CI_ResponsibleParty>
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            </gmd:CI_Citation>
          </gmd:aggregateDataSetName>
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          </gmd:associationType>
          <gmd:initiativeType>
            <gmd:DS_InitiativeTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#DS_InitiativeTypeCode" codeListValue="project">project</gmd:DS_InitiativeTypeCode>
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      <gmd:aggregationInfo>
        <gmd:MD_AggregateInformation>
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                <gco:CharacterString>California Current Ecosystem 2 (CCE2) (Buoy Position: 34.324°N, 120.814°W)</gco:CharacterString>
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              <gmd:date>
                <gmd:CI_Date>
                  <gmd:date>
                    <gco:Date>2022</gco:Date>
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                  <gmd:dateType>
                    <gmd:CI_DateTypeCode codeList="https://data.noaa.gov/resources/iso19139/schema/resources/Codelist/gmxCodelists.xml#CI_DateTypeCode" codeListValue="publication">publication</gmd:CI_DateTypeCode>
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                    <gco:CharacterString>Navigate directly to the URL for a descriptive web page with download links.</gco:CharacterString>
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                        <gco:CharacterString>NCEI Accession 0311406 v1.1</gco:CharacterString>
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            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: Total alkalinity;
Abbreviation: TA_UMOL_KG;
Unit: umol/kg;
Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts;
Measured or calculated: Measured;
Sampling instrument: Rosette bottle;
Analyzing instrument: Dosimat 876 Alkalinity Titration System;
Cell type (open or closed): Open;
Detailed sampling and analyzing information: Amber 130 ml polyproplene bottles are filled with water from Niskin bottles. TA was determined using a two-stage open-cell-titration technique as described in Dickson et al. (2003).;
Quality flag convention: WOCE quality flags: 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, 7=Manual chromatographic peak measurement, 8=Irregular digital chromatographic peak integration, 9=Sample not drawn for this measurement from this bottle.;
Method reference: Dickson, AG, Afghan JD, Anderson GC. "Reference materials for oceanic CO2 analysis: a method for the certification of total alkalinity". Marine Chemistry. 80:185-197. 10.1016/s0304-4203(02)00133-0 (2003);
Researcher name: Todd Martz;
Researcher institution: Scripps Institution of Oceanography</gco:CharacterString>
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          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: pH;
Abbreviation: PH_TOTAL_SCALE;
pH scale: Total scale;
Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts;
Measured or calculated: Measured;
Sampling instrument: Rosette bottle;
Analyzing instrument: Agilent 8453 Spectrophotometric pH System;
Detailed sampling and analyzing information: Sample is extracted from Nisken Bottles and analyzed with MCP indicator dye on a Spectrophotometric instrument as described in Clayton, T.D., and Byme, R.H. (1993);
Quality flag convention: WOCE quality flags: 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, 7=Manual chromatographic peak measurement, 8=Irregular digital chromatographic peak integration, 9=Sample not drawn for this measurement from this bottle.;
Researcher name: Todd Martz;
Researcher institution: Scripps Institution of Oceanography</gco:CharacterString>
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          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: Sea water pressure;
Abbreviation: CTD_PRESSURE;
Unit: dbar;
Observation type: profile;
In-situ / Manipulation / Response variable: In-situ observation;
Sampling instrument: SBE 9plus CTD Digiquartz pressure sensor;
Detailed sampling and analyzing information: Digiquartz pressure sensor connected to the CTD Rosette measures pressure profiles. During upcasts, Rosette bottles are closed at target depths to trap sea water for various analyses. At those target depths, CTD pressure values are averaged over 1.5 seconds starting from the beginning of bottle closure to obtain discrete pressure values. Pressure sensors are calibrated frequently by the manufacturer.;
Quality flag convention: WOCE quality flags: 1=Not calibrated, 2=Acceptable measurement, 3=Questionable measurement, 4=Bad measurement, 5=Not reported, 6=Interpolated over a pressure interval larger than 2 dbar, 7=Despiked, 9=Not sampled.;
Researcher name: Matthias Lankhorst;
Researcher institution: Scripps Institution of Oceanography</gco:CharacterString>
              </gmd:description>
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          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: Sea water temperature;
Abbreviation: CTD_TEMPERATURE;
Unit: ITS-90 scale degC;
Observation type: profile;
In-situ / Manipulation / Response variable: In-situ observation;
Sampling instrument: SBE 3plus;
Detailed sampling and analyzing information: SBE 3plus dual temperature sensor connected to the CTD Rosette measures temperature profiles. During upcasts, Rosette bottles are closed at target depths to trap sea water for various analyses. At those target depths, CTD temperature values are averaged over 1.5 seconds from bottle closure to obtain discrete temperature values. SBE 3plus sensors are calibrated frequently by the manufacturer.;
Uncertainty: plus minus 0.001 degC;
Quality flag convention: WOCE quality flags: 1=Not calibrated, 2=Acceptable measurement, 3=Questionable measurement, 4=Bad measurement, 5=Not reported, 6=Interpolated over a pressure interval larger than 2 dbar, 7=Despiked, 9=Not sampled.;
Researcher name: Matthias Lankhorst;
Researcher institution: Scripps Institution of Oceanography</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: Sea water practical salinity;
Abbreviation: CTD_SALINITY;
Unit: psu;
Observation type: profile;
In-situ / Manipulation / Response variable: In-situ observation;
Sampling instrument: SBE 4C;
Detailed sampling and analyzing information: SBE 4C dual conductivity sensor connected to the CTD Rosette measures conductivity profiles. During upcasts, Rosette bottles are closed at target depths to trap sea water for various analyses. At those target depths, CTD salinity values calculated from CTD conductivity are averaged over 1.5 seconds from bottle closure to obtain discrete salinity values. SBE 4C sensors are calibrated frequently by the manufacturer. CTD salinity values reported here were adjusted by deriving a least-squares fit to the discrete bottle sample data, calculated over each cruise.;
Uncertainty: plus minus 0.005 psu;
Quality flag convention: WOCE quality flags: 1=Not calibrated, 2=Acceptable measurement, 3=Questionable measurement, 4=Bad measurement, 5=Not reported, 6=Interpolated over a pressure interval larger than 2 dbar, 7=Despiked, 9=Not sampled.;
Researcher name: Matthias Lankhorst;
Researcher institution: Scripps Institution of Oceanography</gco:CharacterString>
              </gmd:description>
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          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: Sea water practical salinity;
Abbreviation: BOTTLE_SALINITY;
Unit: psu;
Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts;
In-situ / Manipulation / Response variable: In-situ observation;
Sampling instrument: Rosette bottle;
Analyzing instrument: Salinometer;
Detailed sampling and analyzing information: Rosette bottle water samples were brought to shore and salinity measurements were made using salinometer.;
Quality flag convention: WOCE quality flags: 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, 7=Manual chromatographic peak measurement, 8=Irregular digital chromatographic peak integration, 9=Sample not drawn for this measurement from this bottle.;
Researcher name: Matthias Lankhorst;
Researcher institution: Scripps Institution of Oceanography</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: Dissolved oxygen concentration in sea water;
Abbreviation: CTD_OXYGEN_ML_L;
Unit: ml/L;
Observation type: profile;
In-situ / Manipulation / Response variable: In-situ observation;
Sampling instrument: SBE 43;
Detailed sampling and analyzing information: SBE 43 dissolved oxygen sensor connected to the CTD Rosette measures dissolved oxygen profiles. During upcasts, Rosette bottles are closed at target depths to trap sea water for various analyses. At those target depths, CTD oxygen values are averaged over 1.5 seconds from bottle closure to obtain discrete oxygen values. SBE 43 sensors are calibrated frequently by the manufacturer. CTD oxygen values reported here were adjusted by deriving a least-squares fit to the discrete bottle sample data, calculated over each cruise.;
Quality flag convention: WOCE quality flags: 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, 7=Manual chromatographic peak measurement, 8=Irregular digital chromatographic peak integration, 9=Sample not drawn for this measurement from this bottle.;
Researcher name: Matthias Lankhorst;
Researcher institution: Scripps Institution of Oceanography</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: Dissolved oxygen concentration in sea water;
Abbreviation: BOTTLE_OXYGEN_ML_L;
Unit: ml/L;
Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts;
In-situ / Manipulation / Response variable: In-situ observation;
Sampling instrument: Rosette bottle;
Analyzing instrument: Oxygen titrator;
Detailed sampling and analyzing information: Bottle samples are analyzed by an SIO oxygen titrator (an iodine titrator). The function of the SIO oxygen titrator is little different in principle from the basic Winkler titration as modified by Carpenter (1965). As an end-point indicator, the very strong ultra-violet light absorption is used instead of the visible color of the iodine-starch complex.;
Quality flag convention: WOCE quality flags: 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, 7=Manual chromatographic peak measurement, 8=Irregular digital chromatographic peak integration, 9=Sample not drawn for this measurement from this bottle.;
Method reference: Carpenter, J. H., “The Chesapeake Bay Institute technique for the Winkler dissolved oxygen method,” Limnology and Oceanography, 10, pp. 141-143 (1965).;
Researcher name: Matthias Lankhorst;
Researcher institution: Scripps Institution of Oceanography</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: Nitrate concentration in sea water;
Abbreviation: NITRATE_UMOL_L;
Unit: umol/L;
Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts;
In-situ / Manipulation / Response variable: In-situ observation;
Sampling instrument: Rosette bottle;
Analyzing instrument: Seal Analytical continuous-flow AutoAnalyzer 3 (AA3);
Detailed sampling and analyzing information: Water samples are analyzed by a Seal Analytical continuous-flow AutoAnalyzer 3 (AA3). A modification of the Armstrong et al. (1967) procedure is used for the analysis of nitrate and nitrite.;
Quality flag convention: WOCE quality flags: 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, 7=Manual chromatographic peak measurement, 8=Irregular digital chromatographic peak integration, 9=Sample not drawn for this measurement from this bottle.;
Method reference: Armstrong, F.A.J., Stearns, C.A., and Strickland, J.D.H., "The measurement of upwelling and subsequent biological processes by means of the Technicon Autoanalyzer and associated equipment," Deep-Sea Research, 14, pp.381-389 (1967).;
Researcher name: Mark Ohman;
Researcher institution: Scripps Institution of Oceanography</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: Nitrite concentration in sea water;
Abbreviation: NITRITE_UMOL_L;
Unit: umol/L;
Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts;
In-situ / Manipulation / Response variable: In-situ observation;
Sampling instrument: Rosette bottle;
Analyzing instrument: Seal Analytical continuous-flow AutoAnalyzer 3 (AA3);
Detailed sampling and analyzing information: Water samples are analyzed by a Seal Analytical continuous-flow AutoAnalyzer 3 (AA3). A modification of the Armstrong et al. (1967) procedure is used for the analysis of nitrate and nitrite.;
Quality flag convention: WOCE quality flags: 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, 7=Manual chromatographic peak measurement, 8=Irregular digital chromatographic peak integration, 9=Sample not drawn for this measurement from this bottle.;
Method reference: Armstrong, F.A.J., Stearns, C.A., and Strickland, J.D.H., "The measurement of upwelling and subsequent biological processes by means of the Technicon Autoanalyzer and associated equipment," Deep-Sea Research, 14, pp.381-389 (1967).;
Researcher name: Mark Ohman;
Researcher institution: Scripps Institution of Oceanography</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: Ammonium concentration in sea water;
Abbreviation: AMMONIUM_UMOL_L;
Unit: umol/L;
Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts;
In-situ / Manipulation / Response variable: In-situ observation;
Sampling instrument: Rosette bottle;
Detailed sampling and analyzing information: The basic method of Kerouel and Aminot (Kero97) is used.;
Quality flag convention: WOCE quality flags: 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, 7=Manual chromatographic peak measurement, 8=Irregular digital chromatographic peak integration, 9=Sample not drawn for this measurement from this bottle.;
Method reference: Kerouel, R., Aminot, A., “Fluorometric determination of ammonia in sea and estuarine waters by direct segmented flow analysis.” Marine Chemistry, vol 57, no. 3-4, pp. 265-275, July 1997;
Researcher name: Mark Ohman;
Researcher institution: Scripps Institution of Oceanography</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: Phosphate concentration in sea water;
Abbreviation: PHOSPHATE_UMOL_L;
Unit: umol/L;
Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts;
In-situ / Manipulation / Response variable: In-situ observation;
Sampling instrument: Rosette bottle;
Detailed sampling and analyzing information: A modification of the Bernhardt and Wilhelms (1967) method was used.;
Quality flag convention: WOCE quality flags: 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, 7=Manual chromatographic peak measurement, 8=Irregular digital chromatographic peak integration, 9=Sample not drawn for this measurement from this bottle.;
Method reference: Bernhardt, H., and Wilhelms, A., "The continuous determination of low level iron, soluble phosphate and total phosphate with the AutoAnalyzer," Technicon Symposia, I,pp.385-389 (1967).;
Researcher name: Mark Ohman;
Researcher institution: Scripps Institution of Oceanography</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: Silicate concentration in sea water;
Abbreviation: SILICATE_UMOL_L;
Unit: umol/L;
Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts;
In-situ / Manipulation / Response variable: In-situ observation;
Sampling instrument: Rosette bottle;
Detailed sampling and analyzing information: The basic Armstrong et al. (1967) method was used.;
Quality flag convention: WOCE quality flags: 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, 7=Manual chromatographic peak measurement, 8=Irregular digital chromatographic peak integration, 9=Sample not drawn for this measurement from this bottle.;
Method reference: Armstrong, F.A.J., Stearns, C.A., and Strickland, J.D.H., "The measurement of upwelling and subsequent biological processes by means of the Technicon Autoanalyzer and associated equipment," Deep-Sea Research, 14, pp.381-389 (1967).;
Researcher name: Mark Ohman;
Researcher institution: Scripps Institution of Oceanography</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: Mass concentration of cholophyll-a in sea water;
Abbreviation: CHLA_UG_L;
Unit: ug/L;
Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts;
In-situ / Manipulation / Response variable: In-situ observation;
Sampling instrument: Rosette bottle;
Analyzing instrument: Fluorometer;
Detailed sampling and analyzing information: Water samples are filtered onto GF/F filters, then chlorophyll-a is extracted in an acetone solution. Fluorometer is used to read fluorescence before and after acidification to calculate chlorophyll-a and phaeopigment.;
Quality flag convention: WOCE quality flags: 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, 7=Manual chromatographic peak measurement, 8=Irregular digital chromatographic peak integration, 9=Sample not drawn for this measurement from this bottle.;
Method reference: Yentsch, C.S., Menzel, D.W., "A method for the determination of phytoplankton chlorophyll and phaeophytin by fluorescence", Deep-Sea Res. 10: 221-231 (1963). Holm_Hansen, O., Lorenzen, C.J., Holms, R.W., Strickland, J.D.H., "Fluorometric Determination of Chlorophyll", J. Cons.perm.int Explor. Mer. 30: 3-15 (1965). Lorenzen, C. J., "Determination of chlorophylls and phaeopigments: spectrophotometric equations", Limnol. Oceanogr. 12: 343–346 (1967).;
Researcher name: Mark Ohman;
Researcher institution: Scripps Institution of Oceanography</gco:CharacterString>
              </gmd:description>
            </gmi:LE_ProcessStep>
          </gmd:processStep>
          <gmd:processStep>
            <gmi:LE_ProcessStep>
              <gmd:description>
                <gco:CharacterString>Parameter or Variable: Mass concentration of phaeo pigment in sea water;
Abbreviation: PHAEO_UG_L;
Unit: ug/L;
Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts;
In-situ / Manipulation / Response variable: In-situ observation;
Sampling instrument: Rosette bottle;
Analyzing instrument: Fluorometer;
Detailed sampling and analyzing information: Water samples are filtered onto GF/F filters, then chlorophyll-a is extracted in an acetone solution. Fluorometer is used to read fluorescence before and after acidification to calculate chlorophyll-a and phaeopigment.;
Quality flag convention: WOCE quality flags: 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, 7=Manual chromatographic peak measurement, 8=Irregular digital chromatographic peak integration, 9=Sample not drawn for this measurement from this bottle.;
Method reference: Yentsch, C.S., Menzel, D.W., "A method for the determination of phytoplankton chlorophyll and phaeophytin by fluorescence", Deep-Sea Res. 10: 221-231 (1963). Holm_Hansen, O., Lorenzen, C.J., Holms, R.W., Strickland, J.D.H., "Fluorometric Determination of Chlorophyll", J. Cons.perm.int Explor. Mer. 30: 3-15 (1965). Lorenzen, C. J., "Determination of chlorophylls and phaeopigments: spectrophotometric equations", Limnol. Oceanogr. 12: 343–346 (1967).;
Researcher name: Mark Ohman;
Researcher institution: Scripps Institution of Oceanography</gco:CharacterString>
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        <gco:CharacterString>Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness.</gco:CharacterString>
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            <gco:CharacterString>NOAA National Centers for Environmental Information</gco:CharacterString>
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                <gco:CharacterString>carbon dioxide (CO2) gas analyzer</gco:CharacterString>
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            <gco:CharacterString>carbon dioxide (CO2) gas analyzer</gco:CharacterString>
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          <gmi:description>
            <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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      <gmi:instrument>
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                <gco:CharacterString>CTD</gco:CharacterString>
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            <gco:CharacterString>CTD</gco:CharacterString>
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            <gco:CharacterString>Conductivity-Temperature-Depth probe</gco:CharacterString>
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        <gmi:MI_Instrument id="inst_be3d">
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                <gco:CharacterString>Niskin bottle</gco:CharacterString>
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          <gmi:type>
            <gco:CharacterString>Niskin bottle</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>Device for obtaining samples of seawater at a specific depth

Why special entry for Niskin bottle but no entry for Nansen bottle?</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:instrument>
        <gmi:MI_Instrument id="inst_be48">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>nutrient autoanalyzer</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>nutrient autoanalyzer</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>Laboratory Instrument

Nutrient Autoanalyzer is a generic term describing an automated flow-thru system used to conduct analyses of several different nutrients (nitrate, ammonium, orthophosphate, and silicate) simultaneously from a seawater sample.

For example:
SEAL AutoAnalyzer 3 HR Continuous Segmented Flow Analyzer</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:instrument>
        <gmi:MI_Instrument id="inst_bef4">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>oxygen sensor</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>oxygen sensor</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>Any instrument that measures oxygen content in a compound.</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:instrument>
        <gmi:MI_Instrument id="inst_bedd">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>pH sensor</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>pH sensor</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>generic meter used to measure pH

Any of a class of instruments used to quantify pH in a water or other type of sample.</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:instrument>
        <gmi:MI_Instrument id="inst_bea4">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>salinometer</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>salinometer</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>generic salinometer

use salinometer when the instrument type used is unclear but the data include salinity measurements</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:instrument>
        <gmi:MI_Instrument id="inst_be41">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>temperature sensor</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>temperature sensor</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>A sensor used to measure temperature.</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:instrument>
        <gmi:MI_Instrument id="inst_be28">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>titrator</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:type>
            <gco:CharacterString>titrator</gco:CharacterString>
          </gmi:type>
          <gmi:description>
            <gco:CharacterString>titrator</gco:CharacterString>
          </gmi:description>
        </gmi:MI_Instrument>
      </gmi:instrument>
      <gmi:platform>
        <gmi:MI_Platform id="plat_8fff">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>NOAA Ship Reuben Lasker</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:description>
            <gco:CharacterString>Updated information from ICES for  the vessel REUBEN LASKER from UNITED STATES(US).

Name : REUBEN LASKER
Country(s) : UNITED STATES(US) (ISO Country Code)
Platform Class : 36 Fishing vessel
Call Sign : WTEG
MMSI: 369970573
IMO : 9664988
Pennant : R228
Title : NOAA Ship
Commissioned Date : 2014-05-02
Current Length : 64
Built : 2013-11-08
WOD Code: 11022
Notes : Fishery Survey Vessels.

Information Sources:
- http://www.moc.noaa.gov/rl/
- https://en.wikipedia.org/wiki/NOAAS_Reuben_Lasker_%28R_228%29
- http://www.marinetraffic.com/ais/details/ships/shipid:457535/mmsi:369970573/imo:9664988/vessel:REUBEN_LASKER
- http://www.shipspotting.com/gallery/photo.php?lid=1704590
- https://www.vesselfinder.com/da/vessels/RUBEN-LASKER-IMO-9664988-MMSI-369970573

Submitted to ICES 2015-08-13.
Confirmed by NOAA on 2016-03-01.</gco:CharacterString>
          </gmi:description>
          <gmi:instrument gco:nilReason="missing" />
        </gmi:MI_Platform>
      </gmi:platform>
      <gmi:platform>
        <gmi:MI_Platform id="plat_946b">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>R/V Marcus G. Langseth</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:description>
            <gco:CharacterString>R/V; renamed from the Western Legend and sold to Lamont-Doherty Earth Observatory 2005-02-11; built 1991; active as March 2007</gco:CharacterString>
          </gmi:description>
          <gmi:instrument gco:nilReason="missing" />
        </gmi:MI_Platform>
      </gmi:platform>
      <gmi:platform>
        <gmi:MI_Platform id="plat_8c8a">
          <gmi:identifier>
            <gmd:MD_Identifier>
              <gmd:code>
                <gco:CharacterString>R/V Sally Ride</gco:CharacterString>
              </gmd:code>
            </gmd:MD_Identifier>
          </gmi:identifier>
          <gmi:description>
            <gco:CharacterString>ICES request for the vessel SALLY RIDE from US: UNITED STATES.

Name : SALLY RIDE
Country(s) : US: UNITED STATES (ISO Country Code)
Platform Class : 31: Research vessel
Call Sign : WSAF
IMO : 9695171
Pennant : AGOR-28
Commissioned Date : 2016-07
Current Length : 72
Built : 2016-07
Notes : Owned by US Office of Naval Research. Operated by Scripps Institution of Oceanography

Information Sources:
- https://scripps.ucsd.edu/ships/sally-ride
- https://en.wikipedia.org/wiki/RV_Sally_Ride_(AGOR-28)

General Comments:
Confirmd in Miramar

Confirmed by NOAA on 2017-08-14.</gco:CharacterString>
          </gmi:description>
          <gmi:instrument gco:nilReason="missing" />
        </gmi:MI_Platform>
      </gmi:platform>
    </gmi:MI_AcquisitionInformation>
  </gmi:acquisitionInformation>
</gmi:MI_Metadata>