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Partial pressure (or fugacity) of carbon dioxide and other variables collected from Surface underway observations using Carbon dioxide (CO2) gas analyzer, Shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement and other instruments from unknown platforms in the Andaman Sea or Burma Sea, Arabian Sea and others from 1957-10-21 to 1963-08-15 (NCEI Accession 0157734)


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      DateTime:  2024-03-28T12:44:58Z
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            title:  Partial pressure (or fugacity) of carbon dioxide and other variables collected from Surface underway observations using Carbon dioxide (CO2) gas analyzer, Shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement and other instruments from unknown platforms in the Andaman Sea or Burma Sea, Arabian Sea and others from 1957-10-21 to 1963-08-15 (NCEI Accession 0157734)
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                date:  2017-01-05
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                  Anchor:  DOI 10.3334/cdiac/otg.keeling_1957_1963
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                  Anchor:  NCEI Dataset ID gov.noaa.nodc:0157734
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                  Anchor:  NCEI Accession ID 0157734
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/person/details/2220 Alex Kozyr
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/1730 US DOC; NOAA; NESDIS; National Centers for Environmental Information (NCEI)
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/179 Carbon Dioxide Information Analysis Center (CDIAC)
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/person/details/1084 Charles D. Keeling
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/983 University of California - San Diego; Scripps Institution of Oceanography (SIO)
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/person/details/1084 Keeling, Charles D.
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/983 Scripps Institution of Oceanography (SIO)
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/person/details/1082 Waterman, Lee S.
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/person/details/1081 Tans, Pieter P.
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/person/details/1083 Aten, Todd
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/983 University of California - San Diego; Scripps Institution of Oceanography (SIO)
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        abstract:  This dataset includes Surface underway, chemical, meteorological and physical data collected from unknown platforms in the Andaman Sea or Burma Sea, Arabian Sea, Bay of Bengal, Caribbean Sea, Indian Ocean, Laccadive Sea, Malacca Straits, Mozambique Channel, North Atlantic Ocean, North Pacific Ocean, Philippine Sea, Singapore Straits, South Atlantic Ocean, South China Sea (Nan Hai), South Pacific Ocean, Southern Oceans (> 60 degrees South) and Tasman Sea from 1957-10-21 to 1963-08-15. These data include AIR-SEA DIFFERENCE - PARTIAL PRESSURE (OR FUGACITY) OF CARBON DIOXIDE, BAROMETRIC PRESSURE, Partial pressure (or fugacity) of carbon dioxide - atmosphere, Partial pressure (or fugacity) of carbon dioxide - water and SEA SURFACE TEMPERATURE. The instruments used to collect these data include Carbon dioxide (CO2) gas analyzer and Shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement. These data were collected by Charles D. Keeling of University of California - San Diego; Scripps Institution of Oceanography as part of the Keeling_1957_1963 data set. CDIAC associated the following cruise ID(s) with this data set: KEEL19571021
        purpose:  This dataset is available to the public for a wide variety of uses including scientific research and analysis.
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              Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/1730 NOAA National Centers for Environmental Information
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              Anchor:  https://www.ncei.noaa.gov/archive/accession/0157734 0157734
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                    date:  2017-01-05
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              Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/datatype/details/69 AIR-SEA DIFFERENCE - PARTIAL PRESSURE (OR FUGACITY) OF CARBON DIOXIDE
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              Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/datatype/details/38 BAROMETRIC PRESSURE
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              Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/datatype/details/71 Partial pressure (or fugacity) of carbon dioxide - atmosphere
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              Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/datatype/details/70 partial pressure of carbon dioxide - water
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              Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/datatype/details/319 SEA SURFACE TEMPERATURE
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              Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/insttype/details/183 carbon dioxide (CO2) gas analyzer
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              Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/insttype/details/184 showerhead equilibrator
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              Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/obstype/details/3 chemical
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              Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/obstype/details/12 meteorological
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              Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/obstype/details/27 surface underway
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              Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/983 University of California - San Diego; Scripps Institution of Oceanography
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              Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/179 Carbon Dioxide Information Analysis Center
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              Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/seaname/details/35 Andaman Sea or Burma Sea
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              Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/seaname/details/91 North Atlantic Ocean
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              Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/seaname/details/106 South China Sea (Nan Hai)
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              Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/seaname/details/107 South Pacific Ocean
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              Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/seaname/details/170 Southern Ocean
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              Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/seaname/details/112 Tasman Sea
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              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/772f5ac7-265f-46d3-842b-fd81e77eb8dc DOE/ORNL/ESD/CDIAC > Carbon Dioxide Information Analysis Center, Environmental Sciences Division, Oak Ridge National Laboratory, U. S. Department of Energy
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              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/a65cfcfa-1028-4cc8-a4d5-9e78f487a612 EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > ATMOSPHERIC CARBON DIOXIDE > PARTIAL PRESSURE OF CARBON DIOXIDE
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              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/08fd82a1-4370-46a2-82ea-94c0f91498a7 EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC PRESSURE
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                title:  Provider Variable Abbreviations
                date: (inapplicable)
        descriptiveKeywords:  (MD_Keywords)
            keyword:
              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/7aecabfb-0047-484f-8396-efc0da16bc20 CO2 ANALYZERS > CO2 ANALYZERS
            keyword:
              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/d8efbcb9-9ab3-4016-b7ff-6426cd0bf545 EQUILIBRATORS
            type:  (MD_KeywordTypeCode) instrument
            thesaurusName:  (CI_Citation)
                title:  Global Change Master Directory (GCMD) Instrument Keywords
                date:  (CI_Date)
                    date:  2023
                    dateType:  (CI_DateTypeCode) revision
                edition:  17
                citedResponsibleParty:  (CI_ResponsibleParty)
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                            city:  Greenbelt
                            administrativeArea:  MD
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                            linkage: https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
                            protocol:  HTTPS
                            name:  GCMD Keyword Forum Page
                            description:  Global Change Master Directory (GCMD). 2023. GCMD Keywords, Version 17. 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
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        descriptiveKeywords:  (MD_Keywords)
            keyword:
              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/a4202721-0cba-4fa1-853f-890f146b04f9 OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN
            keyword:
              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/eb176e48-13e2-413c-85d6-b37e16303573 OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > CARIBBEAN SEA
            keyword:
              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/9ce6b6ba-8f9f-4585-9438-05619d768578 OCEAN > ATLANTIC OCEAN > SOUTH ATLANTIC OCEAN
            keyword:
              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/4b75a3a2-9811-43b9-8f8c-64d0ae4d9ca8 OCEAN > INDIAN OCEAN
            keyword:
              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/a186eed4-d1b4-4d11-b218-b61708a9124c OCEAN > INDIAN OCEAN > ARABIAN SEA
            keyword:
              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/66dc90fd-304a-4379-a9e1-18cf184cc6da OCEAN > INDIAN OCEAN > BAY OF BENGAL
            keyword:
              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/5488b1cc-08b2-41cf-9bd2-4a2cdd0990de OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN
            keyword:
              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/fa0ec8a7-ebed-4f2d-834b-1fa6a1c2e0ed OCEAN > PACIFIC OCEAN > SOUTH PACIFIC OCEAN
            keyword:
              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/8537ebe8-8768-4463-ad22-8bbe508f43bf OCEAN > PACIFIC OCEAN > WESTERN PACIFIC OCEAN > SOUTH CHINA AND EASTERN ARCHIPELAGIC SEAS
            keyword:
              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/89eb3337-707f-496d-9850-a6312ca42ecf OCEAN > PACIFIC OCEAN > WESTERN PACIFIC OCEAN > SOUTH CHINA SEA
            keyword:
              Anchor:  https://gcmd.earthdata.nasa.gov/kms/concept/b791f381-1c1c-4958-bc7d-b72a15da1174 OCEAN > SOUTHERN OCEAN
            type:  (MD_KeywordTypeCode) place
            thesaurusName:  (CI_Citation)
                title:  Global Change Master Directory (GCMD) Location Keywords
                date:  (CI_Date)
                    date:  2023
                    dateType:  (CI_DateTypeCode) revision
                edition:  17
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                    organisationName:  Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA)
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                        address:  (CI_Address)
                            city:  Greenbelt
                            administrativeArea:  MD
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords
                            protocol:  HTTPS
                            name:  GCMD Keyword Forum Page
                            description:  Global Change Master Directory (GCMD). 2023. GCMD Keywords, Version 17. 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
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            useLimitation:  accessLevel: Public
        resourceConstraints:  (MD_LegalConstraints)
            useConstraints:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  Cite as: Keeling, Charles D.; Waterman, Lee S.; Tans, Pieter P.; Aten, Todd (2017). Partial pressure (or fugacity) of carbon dioxide and other variables collected from Surface underway observations using Carbon dioxide (CO2) gas analyzer, Shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement and other instruments from unknown platforms in the Andaman Sea or Burma Sea, Arabian Sea and others from 1957-10-21 to 1963-08-15 (NCEI Accession 0157734). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.3334/cdiac/otg.keeling_1957_1963. Accessed [date].
        resourceConstraints:  (MD_LegalConstraints)
            useLimitation:  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.
        resourceConstraints:  (MD_LegalConstraints)
            accessConstraints:  (MD_RestrictionCode) otherRestrictions
            otherConstraints:  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.
        aggregationInfo:  (MD_AggregateInformation)
            aggregateDataSetName:  (CI_Citation)
                title:  Keeling, C.D., L. S. Waterman, P. P. Tans and T. Aten (2016). Quasi-simultaneous CO2 Measurements in the Atmosphere and Surface Ocean Waters from Scripps Institution of Oceanography's R/Vs Downwind, Monson, and Lusaid Expeditions 1957-1963. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, Oak Ridge, Tennessee, Keeling_1957_1963.
                date:  (CI_Date)
                    date:  2016
                    dateType:  (CI_DateTypeCode) publication
                identifier:  (MD_Identifier)
                    code:  Keeling_1957_1963
                citedResponsibleParty:  (CI_ResponsibleParty)
                    individualName:  Keeling, C.D., L. S. Waterman, P. P. Tans and T. Aten
                    role:  (CI_RoleCode) author
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:
                      Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/179 Carbon Dioxide Information Analysis Center (CDIAC)
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: http://cdiac.ornl.gov
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                            name:  Carbon Dioxide Information Analysis Center website
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                            function:  (CI_OnLineFunctionCode) information
                    role:  (CI_RoleCode) publisher
                series:  (CI_Series)
                    name:  Ocean CO2
                otherCitationDetails:  [retrieved from http://cdiac.esd.ornl.gov/ftp/oceans/Keeling_1957_1963/]
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                title:  NOAA National Centers for Environmental Information (2022). Ocean Carbon and Acidification Data System (OCADS). NOAA National Centers for Environmental Information. https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system
                date:  (CI_Date)
                    date:  2022-04
                    dateType:  (CI_DateTypeCode) publication
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                    positionName: (unknown)
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system
                            protocol:  HTTPS
                            name: https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system
                            description:  OCADS website
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                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:
                      Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/1730 NOAA National Centers for Environmental Information
                    role:  (CI_RoleCode) author
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                      Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/1730 US DOC; NOAA; NESDIS; National Centers for Environmental Information (NCEI)
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                otherCitationDetails:  [accessed 2024-02-08]
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            initiativeType:  (DS_InitiativeTypeCode) program
        language:
          LanguageCode:  eng; USA
        characterSet:  (MD_CharacterSetCode) utf8
        topicCategory:  (MD_TopicCategoryCode) environment
        topicCategory:  (MD_TopicCategoryCode) oceans
        topicCategory:  (MD_TopicCategoryCode) climatologyMeteorologyAtmosphere
        extent:  (EX_Extent)
            geographicElement:  (EX_GeographicBoundingBox)
                westBoundLongitude:  135.47
                eastBoundLongitude:  135
                southBoundLatitude:  -64.72
                northBoundLatitude:  35.23
            temporalElement:  (EX_TemporalExtent)
                extent:
                  TimePeriod:
                    beginPosition:  1957-10-21
                    endPosition:  1963-08-15
        supplementalInformation:  These data were acquired by NCEI from the Carbon Dioxide Information Analysis Center (CDIAC) in accordance with an archival submission agreement between CDIAC and NCEI.
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    distributionInfo:  (MD_Distribution)
        distributor:  (MD_Distributor)
            distributorContact:  (CI_ResponsibleParty)
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                  Anchor:  https://www.ncei.noaa.gov/archive/archive-management-system/OAS/bin/prd/jquery/institution/details/1730 NOAA National Centers for Environmental Information
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                        voice:  +1-301-713-3277
                    address:  (CI_Address)
                        electronicMailAddress:  NCEI.Info@noaa.gov
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                fees:  In most cases, electronic downloads of the data are free. However, fees may apply for custom orders, data certifications, copies of analog materials, and data distribution on physical media.
                orderingInstructions:  Contact NCEI for other distribution options and instructions.
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                    linkage: https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0157734.html
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                    linkage: https://doi.org/10.3334/cdiac/otg.keeling_1957_1963
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                    linkage: https://www.ncei.noaa.gov/archive/accession/oas/157734
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                    linkage: ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0102/0157734/
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                    description:  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).
                    function:  (CI_OnLineFunctionCode) download
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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) dataset
        lineage:  (LI_Lineage)
            processStep:  (LE_ProcessStep)
                description:  NCEI Accession 0157734 v1.1 was published.
                dateTime:
                  DateTime:  2017-01-05T15:37:10Z
                output:  (LE_Source)
                    sourceCitation:  (CI_Citation)
                        title:  NCEI Accession 0157734 v1.1
                        date:  (CI_Date)
                            date: (inapplicable)
                            dateType:  (CI_DateTypeCode) publication
                        citedResponsibleParty:  (CI_ResponsibleParty)
                            individualName: (inapplicable)
                            contactInfo:  (CI_Contact)
                                onlineResource:  (CI_OnlineResource)
                                    linkage: https://www.ncei.noaa.gov/archive/accession/0157734/1.1
                                    protocol:  HTTPS
                                    name:  NCEI Accession 0157734 v1.1
                                    description:  published 2017-01-05T15:37:10Z
                                    function:  (CI_OnLineFunctionCode) download
                            role: (inapplicable)
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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) dataset
        lineage:  (LI_Lineage)
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: SST; Abbreviation: SST; Unit: DEG_C; Controlled vocabulary name: SEA SURFACE TEMPERATURE; In-situ / Manipulation / Response variable: in-situ.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: DELTA_TMP; Abbreviation: DELTA_TMP; Unit: DEG_C; In-situ / Manipulation / Response variable: in-situ.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: ATM_PRE; Abbreviation: ATM_PRE; Unit: HPA; Controlled vocabulary name: BAROMETRIC PRESSURE; In-situ / Manipulation / Response variable: in-situ.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: XCO2_AIR; Abbreviation: XCO2_AIR; Unit: PPM; Controlled vocabulary name: Partial pressure (or fugacity) of carbon dioxide - atmosphere; In-situ / Manipulation / Response variable: in-situ.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: XCO2_WAT; Abbreviation: XCO2_WAT; Unit: PPM; Controlled vocabulary name: partial pressure of carbon dioxide - water; In-situ / Manipulation / Response variable: in-situ.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: DEL_XCO2; Abbreviation: DEL_XCO2; Unit: UMOL/MOL; Controlled vocabulary name: AIR-SEA DIFFERENCE - PARTIAL PRESSURE (OR FUGACITY) OF CARBON DIOXIDE; In-situ / Manipulation / Response variable: in-situ .
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        maintenanceNote:  Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness.
        contact:  (CI_ResponsibleParty)
            organisationName:  NOAA National Centers for Environmental Information
            role:  (CI_RoleCode) custodian
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    acquisitionInformation:  (MI_AcquisitionInformation)
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  carbon dioxide (CO2) gas analyzer
            type:  carbon dioxide (CO2) gas analyzer
            description:  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.
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  showerhead equilibrator
            type:  showerhead equilibrator
            description:  extracts dissolved CO2 from water A carbon dioxide equilibrator is usually in the shape of a vertical tube, with a showerhead on the top, some headspace, a lot of beads to increase the surface exchange area between water and air, a water seal device at the bottom to allow water to overflow, but prevents air exchange between inside and outside. Carbon dioxide (CO2) equilibrator works together with carbon dioxide (CO2) gas analyzer (insttypes_id 183) to measure carbon dioxide in the water. To measure water carbon dioxide, water needs to be continuously supplied to a showerhead inside an equilibrator. As the water flows through the equilibrator chamber, dissolved carbon dioxide exchanges quickly with air in the headspace. This air is then sampled by the carbon dioxide analyzer to determine the mole fraction of CO2 in water.