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A comprehensive global oceanic dataset of discrete measurements of helium isotope and tritium during the hydrographic cruises on various ships from 1952-10-21 to 2016-01-22 (NCEI Accession 0176626)


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            title:  A comprehensive global oceanic dataset of discrete measurements of helium isotope and tritium during the hydrographic cruises on various ships from 1952-10-21 to 2016-01-22 (NCEI Accession 0176626)
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                date:  2018-10-10
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                date:  2019-03-14
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                  Anchor:  DOI 10.25921/c1sn-9631
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        abstract:  This dataset consists of global oceanic database of tritium and helium isotope measurements made by numerous researchers and laboratories over a period exceeding 60 years: from 1952-10-21 to 2016-01-22 in the Pacific Ocean, Atlantic Ocean, Indian Ocean, Southern Ocean, Arctic Ocean, Mediterranean Sea, Baltic Sea, Black Sea. Tritium and helium isotope data provide key information on ocean circulation, ventilation, and mixing, as well as the rates of biogeochemical processes, and deep-ocean hydrothermal processes. The dataset includes approximately 60,000 valid tritium measurements, 63,000 valid helium isotope determinations, 57,000 dissolved helium concentrations, and 34,000 dissolved neon concentrations. Some quality control has been applied in that questionable data have been flagged and clearly compromised data excluded entirely. Appropriate metadata has been included: geographic location, date, and sample depth. When available, water temperature, salinity, and dissolved oxygen were included. Data quality flags and data originator information (including methodology) are also included.
        purpose:  To provide access to ocean tracer data.
        credit:  Funding Information: U.S. National Science Foundation (Using Ocean Tritium/Helium-3 Observations to Quantify Thermocline Circulation and Biogeochemistry, 1434000)
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            otherConstraints:  Cite as: Jenkins, William J.; Doney, Scott C.; Fendrock, Michaela A.; Fine, Rana A.; Gamo, Toshitaka; Jean-Baptiste, Philippe; Key, Robert M.; Klein, Birgit; Lupton, John E.; Rhein, Monika; Roether, Wolfgang; Sano, Yuji; Schlitzer, Reiner; Schlosser, Peter; Swift, James H. (2018). A comprehensive global oceanic dataset of discrete measurements of helium isotope and tritium during the hydrographic cruises on various ships from 1952-10-21 to 2016-01-22 (NCEI Accession 0176626). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/c1sn-9631. 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:  A comprehensive global oceanic dataset of discrete measurements of helium isotope and tritium during the hygrographic cruises on various ships from 1952-10-21 to 2016-01-22.
                date:  (CI_Date)
                    date:  2022
                    dateType:  (CI_DateTypeCode) publication
                citedResponsibleParty:  (CI_ResponsibleParty)
                    positionName: (unknown)
                    contactInfo:  (CI_Contact)
                        onlineResource:  (CI_OnlineResource)
                            linkage: https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/ndp_098/ndp098.html
                            protocol:  HTTPS
                            name: https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/ndp_098/ndp098.html
                            description:  related resource
                            function:  (CI_OnLineFunctionCode) information
                    role: (unknown)
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:
                      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)
                    role:  (CI_RoleCode) publisher
                presentationForm:  (CI_PresentationFormCode) documentDigital
            associationType:  (DS_AssociationTypeCode) crossReference
            initiativeType:  (DS_InitiativeTypeCode) project
        aggregationInfo:  (MD_AggregateInformation)
            aggregateDataSetName:  (CI_Citation)
                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
                citedResponsibleParty:  (CI_ResponsibleParty)
                    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
                            function:  (CI_OnLineFunctionCode) information
                    role: (unknown)
                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
                citedResponsibleParty:  (CI_ResponsibleParty)
                    organisationName:
                      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)
                    role:  (CI_RoleCode) publisher
                presentationForm:  (CI_PresentationFormCode) documentDigital
                otherCitationDetails:  [accessed 2024-02-08]
            associationType:  (DS_AssociationTypeCode) crossReference
            initiativeType:  (DS_InitiativeTypeCode) program
        language:
          LanguageCode:  eng; USA
        characterSet:  (MD_CharacterSetCode) utf8
        topicCategory:  (MD_TopicCategoryCode) environment
        topicCategory:  (MD_TopicCategoryCode) oceans
        extent:  (EX_Extent)
            geographicElement:  (EX_GeographicBoundingBox)
                westBoundLongitude:  -179.98
                eastBoundLongitude:  180
                southBoundLatitude:  -82.38
                northBoundLatitude:  90
            temporalElement:  (EX_TemporalExtent)
                extent:
                  TimePeriod:
                    beginPosition:  1952-10-21
                    endPosition:  2016-01-22
        supplementalInformation:  In this accession, NCEI has archived multiple versions of these data. The latest (and best) version of these data has the largest version number.
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    distributionInfo:  (MD_Distribution)
        distributor:  (MD_Distributor)
            distributorContact:  (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
                contactInfo:  (CI_Contact)
                    phone:  (CI_Telephone)
                        voice:  +1-301-713-3277
                    address:  (CI_Address)
                        electronicMailAddress:  NCEI.Info@noaa.gov
                role:  (CI_RoleCode) pointOfContact
            distributionOrderProcess:  (MD_StandardOrderProcess)
                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.
            distributorFormat:  (MD_Format)
                name:  Originator data format
                version: (unknown)
            distributorTransferOptions:  (MD_DigitalTransferOptions)
                transferSize:
                  Real:  142.644
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0176626.html
                    protocol:  HTTPS
                    applicationProfile:  Web browser
                    name:  Project Metadata
                    description:  Navigate directly to the URL for a descriptive web page with download links.
                    function:  (CI_OnLineFunctionCode) information
                onLine:  (CI_OnlineResource)
                    linkage: https://doi.org/10.25921/c1sn-9631
                    protocol:  HTTPS
                    applicationProfile:  Web browser
                    name:  NCEI Dataset Landing Page
                    description:  Navigate directly to the URL for a descriptive web page with download links.
                    function:  (CI_OnLineFunctionCode) information
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ncei.noaa.gov/archive/accession/oas/176626
                    protocol:  HTTPS
                    applicationProfile:  Web browser
                    name:  Descriptive Information
                    description:  Navigate directly to the URL for a descriptive web page with download links.
                    function:  (CI_OnLineFunctionCode) information
                onLine:  (CI_OnlineResource)
                    linkage: https://www.ncei.noaa.gov/archive/accession/download/176626
                    protocol:  HTTPS
                    applicationProfile:  Web browser
                    name:  HTTPS
                    description:  Navigate directly to the URL for data access and direct download.
                    function:  (CI_OnLineFunctionCode) download
                onLine:  (CI_OnlineResource)
                    linkage: ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0125/0176626/
                    protocol:  FTP
                    applicationProfile:  Any FTP client
                    name:  FTP
                    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 0176626 v1.1 was published.
                dateTime:
                  DateTime:  2018-10-10T22:20:26Z
                output:  (LE_Source)
                    sourceCitation:  (CI_Citation)
                        title:  NCEI Accession 0176626 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/0176626/1.1
                                    protocol:  HTTPS
                                    name:  NCEI Accession 0176626 v1.1
                                    description:  published 2018-10-10T22:20:26Z
                                    function:  (CI_OnLineFunctionCode) download
                            role: (inapplicable)
            processStep:  (LE_ProcessStep)
                description:  NCEI Accession 0176626 was revised and v2.2 was published.
                rationale:  Updates were received for this dataset. These updates were copied into the data/0-data/ directory of this accession. These updates may provide additional files or replace obsolete files. This version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession.
                dateTime:
                  DateTime:  2019-03-14T20:34:41Z
                output:  (LE_Source)
                    sourceCitation:  (CI_Citation)
                        title:  NCEI Accession 0176626 v2.2
                        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/0176626/2.2
                                    protocol:  HTTPS
                                    name:  NCEI Accession 0176626 v2.2
                                    description:  published 2019-03-14T20:34:41Z
                                    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: In Situ temperature in degrees centigrade; Abbreviation: Temperature; Unit: degrees celcius; Observation type: profile; Sampling instrument: CTD; Analyzing instrument: CTD.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Sample salinity in PSU; Abbreviation: Salinity; Observation type: profile, discrete; Sampling instrument: CTD sensor, Niskin Bottles; Analyzing instrument: CTD sensor, Salinity titrator.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Dissolved oxygen in umol/kg; Abbreviation: Oxygen; Unit: UMOL/KG; Observation type: profile, discrete; Sampling instrument: CTD sensor, Niskin Bottles; Analyzing instrument: CTD sensor, Oxygen titrator.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Tritium in TU at time of sampling; Abbreviation: Tritium; Observation type: profile, discrete; Sampling instrument: Niskin Bottles.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Uncertainty in TU at time of sampling; Abbreviation: Tritium_Error.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Helium isotope ratio anomaly relative to atmosphere in percent; Abbreviation: DelHe3; Unit: /percent; Observation type: profile, discrete.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Uncertainty in helium isotope ratio anomaly; Abbreviation: DelHe3_Error; Unit: /percent.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Dissolved helium concentration in nmol/kg; Abbreviation: Helium; Unit: NMOL/KG; Observation type: profile, discrete; Sampling instrument: Niskin Bottles.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Uncertainty in dissolved helium concentration in nmol/kg; Abbreviation: Helium_Error; Unit: NMOL/KG.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Dissolved neon concentration in nmol/kg; Abbreviation: Neon; Unit: NMOL/KG; Observation type: profile, discrete; Sampling instrument: Niskin Bottles.
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: Uncertainty in dissolved neon concentration in nmol/kg; Abbreviation: Neon_Error; Unit: NMOL/KG .
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    metadataMaintenance:  (MD_MaintenanceInformation)
        maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) asNeeded
        maintenanceNote:  Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness.
        maintenanceNote:  NCEI Accession 0176626 was revised and a new version of the archival package was published. Updates to existing archival packages may provide additional files or replace obsolete files. The latest version contains the most complete and up-to-date representation of this archival information package. All of the files received prior to this update are available in the preceding version of this accession. Please see journal.txt in the /about directory for additional details on changes made.
        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:  CTD
            type:  CTD
            description:  Conductivity-Temperature-Depth probe
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  Niskin bottle
            type:  Niskin bottle
            description:  Device for obtaining samples of seawater at a specific depth Why special entry for Niskin bottle but no entry for Nansen bottle?
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  titrator
            type:  titrator
            description:  titrator
        platform:  (MI_Platform)
            identifier:  (MD_Identifier)
                code:  VARIOUS CHARTERED VESSELS
            description:  VARIOUS CHARTERED VESSELS
            instrument: (missing)