gov.noaa.nodc:0168141 eng utf8 dataset NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NOAA Contact Information Information for contacts at NCEI. information custodian 2026-07-28T13:17:29Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) Dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, and other hydrographic and chemical data obtained during the SOCCOM float deployment expedition onboard R/V Investigator cruise IN2016_V03 along the GO-SHIP section P15S (EXPOCODE 096U20160426) from 2016-04-26 to 2016-06-30 (NCEI Accession 0168141) 2017-11-18 publication 2020-07-31 revision 2017-11-14 creation International DOI Foundation (IDF) 10.7289/v5p26wdd NOAA National Centers for Environmental Information gov.noaa.nodc:0168141 NCEI Archive Management System 0168141 NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information publisher Robert M. Key Princeton University key@princeton.edu http://www.princeton.edu HTTP Princeton University website Institution web page information resourceProvider Princeton University http://www.princeton.edu HTTP Princeton University website Institution web page information resourceProvider Bernadette M. Sloyan Commonwealth Scientific and Industrial Research Organization (CSIRO) bernadette.Sloyan@csiro.au principalInvestigator Bronte Tilbrook Commonwealth Scientific and Industrial Research Organization (CSIRO) bronte.tilbrook@csiro.au principalInvestigator Andrew Dickson Scripps Institution of Oceanography (SIO) adickson@ucsd.edu https://scripps.ucsd.edu/ HTTPS Scripps Institution of Oceanography (SIO) website Institution web page information principalInvestigator Susan Wijffels Commonwealth Scientific and Industrial Research Organization (CSIRO) Susan.Wijffels@csiro.au http://www.whoi.edu HTTP Commonwealth Scientific and Industrial Research Organization (CSIRO) website Institution web page information collaborator Robert M. Key Princeton University key@princeton.edu http://www.princeton.edu HTTP Princeton University website Institution web page information collaborator Mark J. Warner UW School of Oceanography http://www.ocean.washington.edu HTTP UW School of Oceanography website Institution web page information collaborator John Bullister NOAA Pacific Marine Environmental Laboratory (PMEL) John.L.Bullister@noaa.gov https://www.pmel.noaa.gov/ HTTPS NOAA Pacific Marine Environmental Laboratory (PMEL) website Institution web page information collaborator Emmanuel Boss University of Maine (UMO) emmanuel.boss@maine.edu https://umaine.edu/ HTTPS University of Maine (UMO) website Institution web page information collaborator Ann McNichol Woods Hole Oceanographic Institution (WHOI) http://www.whoi.edu HTTP Woods Hole Oceanographic Institution (WHOI) website Institution web page information collaborator Sloyan, Bernadette M. Commonwealth Scientific and Industrial Research Organization author Wijffels, Susan E. Commonwealth Scientific and Industrial Research Organization http://www.whoi.edu HTTP Commonwealth Scientific and Industrial Research Organization (CSIRO) website Institution web page information author Tilbrook, Bronte Commonwealth Scientific and Industrial Research Organization author Dickson, Andrew G. Scripps Institution of Oceanography https://scripps.ucsd.edu/ HTTPS Scripps Institution of Oceanography (SIO) website Institution web page information author Bullister, John L. NOAA Pacific Marine Environmental Laboratory https://www.pmel.noaa.gov/ HTTPS NOAA Pacific Marine Environmental Laboratory (PMEL) website Institution web page information author Warner, Mark J. UW School of Oceanography http://www.ocean.washington.edu HTTP UW School of Oceanography website Institution web page information author Key, Robert M. Princeton University key@princeton.edu http://www.princeton.edu HTTP Princeton University website Institution web page information author McNichol, Ann Woods Hole Oceanographic Institution http://www.whoi.edu HTTP Woods Hole Oceanographic Institution (WHOI) website Institution web page information author Boss, Emmanuel University of Maine https://umaine.edu/ HTTPS University of Maine (UMO) website Institution web page information author Commonwealth Scientific and Industrial Research Organization (CSIRO) contributor Scripps Institution of Oceanography (SIO) https://scripps.ucsd.edu/ HTTPS Scripps Institution of Oceanography (SIO) website Institution web page information contributor tableDigital This dataset includes discrete bottle measurements of dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, temperature, salinity, oxygen, nutrients, delta C14, delta C14, helium and other chemical parameters collected during the SOCCOM float deployment expedition onboard R/V Investigator cruise IN2016_V03 along the GO-SHIP section P15S (EXPOCODE 096U20160426) from 2016-04-26 to 2016-06-30. The R/V Investigator cruise IN2016_V03 is the part of the SOCCOM project cruise from the research ships in the South Pacific Ocean and Southern Ocean. These data are part of the World Data Service for Oceanography and US State Department Marine Research U2015-032. Biogeochemical Argo floats deployment and measuring reference data Funding Information: NSF (SOCCOM, PLR-1425989) completed historicalArchive NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact HTTPS NCEI Contact Information Information for contacts at NCEI. information pointOfContact asNeeded NCEI Accession 0168141 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. https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0168141 Preview graphic PNG 0168141 NCEI ACCESSION NUMBER 2019-09-06 publication CHLOROFLUOROCARBON (CFC) DELTA CARBON-13 DELTA CARBON-14 DISSOLVED INORGANIC CARBON (DIC) HELIUM NUTRIENTS OXYGEN PARTICULATE ORGANIC CARBON pH SALINITY total alkalinity WATER TEMPERATURE theme NODC DATA TYPES THESAURUS coulometer for DIC measurement CTD titrator instrument NODC INSTRUMENT TYPES THESAURUS chemical discrete sample physical profile theme NODC OBSERVATION TYPES THESAURUS RV Investigator platform NODC PLATFORM NAMES THESAURUS Commonwealth Scientific and Industrial Research Organization Scripps Institution of Oceanography dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS Princeton University dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS Southern Ocean Carbon and Climate Observations and Modeling (SOCCOM) The Global Ocean Ship-based Hydrographic Investigations Program (GO-SHIP) U. S. Department of State Marine Scientific Research (MSR) project NODC PROJECT NAMES THESAURUS South Pacific Ocean Southern Ocean place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication IN2016_V03 project Cruise ID 096U20160426 project EXPOCODE MSR > U.S. Department of State Marine Scientific Research project Global Change Master Directory (GCMD) Project Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page 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 information custodian Ocean Carbon and Acidification Data System (OCADS) Project project Ocean Acidification Search Keywords P15S project Reference Section ID Monitoring Ocean Change and Variability along 170W from the ice edge to the equator project Research Projects EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > HALOCARBONS AND HALOGENS > CHLOROFLUOROCARBONS EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > DISSOLVED GASES EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > HYDROCARBONS EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NUTRIENTS EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ORGANIC CARBON EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page 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 information custodian Discrete measurement theme OCADS Study Type ALKALI CFC CTDOXY CTDSAL CTDTMP OXYGEN PH_TOT SALNTY SILCAT, NITRAT, NITRIT, PHSPHT TCARBN theme Provider Variable Abbreviations COULOMETERS CTD > Conductivity, Temperature, Depth instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page 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 information custodian Potentiometric titrator for dissolved inorganic carbon (DIC) and total alkalinity (TA) measurement instrument Ocean Acidification Instrument Keywords Ships platform Global Change Master Directory (GCMD) Platform Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page 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 information custodian Investigator (call sign: VLMJ, ICES code: 096U, 2014-) platform ICES/SeaDataNet Ship Codes OCEAN > PACIFIC OCEAN > SOUTH PACIFIC OCEAN OCEAN > SOUTHERN OCEAN place Global Change Master Directory (GCMD) Location Keywords 2026 revision 24 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) Greenbelt MD https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords HTTPS GCMD Keyword Forum Page 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 information custodian South Pacific Ocean Southern Ocean place Provider Geographic Names accessLevel: public otherRestrictions Cite as: Sloyan, Bernadette M.; Wijffels, Susan E.; Tilbrook, Bronte; Dickson, Andrew G.; Bullister, John L.; Warner, Mark J.; Key, Robert M.; McNichol, Ann; Boss, Emmanuel (2017). Dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, and other hydrographic and chemical data obtained during the SOCCOM float deployment expedition onboard R/V Investigator cruise IN2016_V03 along the GO-SHIP section P15S (EXPOCODE 096U20160426) from 2016-04-26 to 2016-06-30 (NCEI Accession 0168141). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.7289/v5p26wdd. Accessed [date]. 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. otherRestrictions 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. Tilbrook, Bronte; Akl, John; Neill, Craig (2017). Partial pressure (or fugacity) of carbon dioxide, salinity and other variables collected from Surface underway observations using Barometric pressure sensor, Carbon dioxide (CO2) gas analyzer and other instruments from Investigator in the North Pacific Ocean, South Pacific Ocean and Southern Oceans from 2016-04-26 to 2016-06-29 (NCEI Accession 0160555). NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.3334/cdiac/otg.soccom_096u20160426_uw. 2017-02-20 publication International DOI Foundation (IDF) https://doi.org/10.3334/cdiac/otg.soccom_096u20160426_uw NOAA National Centers for Environmental Information gov.noaa.nodc:0160555 https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0160555.html HTTPS https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0160555.html Related dataset information Tilbrook, Bronte Commonwealth Scientific and Industrial Research Organization author Akl, John Commonwealth Scientific and Industrial Research Organization author Neill, Craig Commonwealth Scientific and Industrial Research Organization author NOAA National Centers for Environmental Information (NCEI) publisher tableDigital crossReference project 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 2022-04 publication https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system HTTPS https://www.ncei.noaa.gov/products/ocean-carbon-acidification-data-system OCADS website information NOAA National Centers for Environmental Information author NOAA National Centers for Environmental Information (NCEI) publisher documentDigital [accessed 2024-02-08] crossReference program eng; USA utf8 environment oceans -175.4 -167.9 -67.2 .2 2016-04-26 2016-06-30 In this accession, NCEI has archived multiple versions of these data. The latest (and best) version of these data has the largest version number. NOAA National Centers for Environmental Information +1-301-713-3277 ncei.info@noaa.gov pointOfContact 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. Contact NCEI for other distribution options and instructions. Originator data format 9.36 https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0168141.html HTTPS Web browser Project Metadata Navigate directly to the URL for a descriptive web page with download links. information https://doi.org/10.7289/v5p26wdd HTTPS Web browser NCEI Dataset Landing Page Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/oas/168141 HTTPS Web browser Descriptive Information Navigate directly to the URL for a descriptive web page with download links. information https://www.ncei.noaa.gov/archive/accession/download/168141 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0113/0168141/ FTP Any FTP client FTP 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). download dataset NCEI Accession 0168141 v1.1 was published. 2017-11-18T03:23:16Z NCEI Accession 0168141 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0168141/1.1 HTTPS NCEI Accession 0168141 v1.1 published 2017-11-18T03:23:16Z download NCEI Accession 0168141 was revised and v2.2 was published. 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. 2018-02-24T02:15:26Z NCEI Accession 0168141 v2.2 publication https://www.ncei.noaa.gov/archive/accession/0168141/2.2 HTTPS NCEI Accession 0168141 v2.2 published 2018-02-24T02:15:26Z download NCEI Accession 0168141 was revised and v3.3 was published. 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. 2019-09-20T17:31:13Z NCEI Accession 0168141 v3.3 publication https://www.ncei.noaa.gov/archive/accession/0168141/3.3 HTTPS NCEI Accession 0168141 v3.3 published 2019-09-20T17:31:13Z download NCEI Accession 0168141 was revised and v4.4 was published. 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. 2020-07-31T21:48:28Z NCEI Accession 0168141 v4.4 publication https://www.ncei.noaa.gov/archive/accession/0168141/4.4 HTTPS NCEI Accession 0168141 v4.4 published 2020-07-31T21:48:28Z download dataset Parameter or Variable: Dissolved Inorganic Carbon; Abbreviation: TCARBN; Unit: UMOL/KG; Observation type: Discrete, bottle; Measured or calculated: Measured; Analyzing instrument: SOMMA system and 5011 UIC coulometer (Johnson et al., 1993 and Dickson et al.,2007); Replicate information: The initial analysis of duplicate samples gave an average absolute difference of 1.71 +- 1.24 micromol kg-1 (s.d., n=269) indicating a precision of better than 2 micromol kg-1.; CRM manufacturer: Andrew Dickson Laboratory at SIO; CRM batch number: Batch 36; Preservation method: mercuric chloride solution; Preservative volume: 100 mL; Uncertainty: precision was better than 2 micromol kg-1; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Method reference: Johnson, K.M., Wills, K.D., Butler, D.B., Johnson, W.K., and Wong, C.S. (1993). Coulometric total carbon dioxide analysis for marine studies: Maximizing the performance of an automated continuous gas extraction system and coulometric detector. Marine Chemistry, 44, pp 167-189.; Researcher name: Bronte Tilbrook; Researcher institution: CSIRO, Australia Parameter or Variable: Total alkalinity; Abbreviation: ALKALI; Unit: UMOL/KG; Observation type: Discrete, bottle; Measured or calculated: Measured; Analyzing instrument: Metrohm Dosino 800 burette and a 5ml burette on a Metrohm Titrando 904 was used to deliver acid titrant; Type of titration: potentiometric titration; Cell type (open or closed): open; Curve fitting method: A non-linear fitting routine similar to Johansson and Wedborg (1982) and Dickson et al. (2007) was used to calculate TA; CRM batch number: Batch 36; Uncertainty: precision of better than +-1 micromol kg-1.; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Method reference: Dickson, Andrew G., Chris Sabine and James R. Christian, editors, "Guide to Best Practices for Ocean CO2 Measurements", Pices Special Publication 3, IOCCP Report No. 8, October 2007, SOP 3b, "Determination of total alkalinity in sea water using an open-cell titration"; Researcher name: Andrew Dickson; Researcher institution: Scripps Institution of Oceanography, University of California, San Diego Parameter or Variable: pH; Abbreviation: PH_TOT; pH scale: Total; Observation type: Discrete, bottle; Measured or calculated: Measured; Analyzing instrument: spectrophotometry (pH); Temperature of pH measurement: 25 Deg C; At what temperature was pH reported: at SST; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: Andrew Dickson; Researcher institution: Scripps Institution of Oceanography, University of California, San Diego Parameter or Variable: CTD Temperature; Abbreviation: CTDTMP; Unit: degrees celcius; Observation type: CTD sensor; Sampling instrument: CTD; Analyzing instrument: CTD; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: Bernadette Sloyan; Researcher institution: CSIRO Parameter or Variable: CTD Salinity; Abbreviation: CTDSAL; Observation type: CTD sensor; Sampling instrument: CTD; Analyzing instrument: CTD; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: Bernadette Sloyan; Researcher institution: CSIRO Parameter or Variable: Bottle Salinity; Abbreviation: SALNTY; Observation type: Bottle, discrete; Sampling instrument: CTD; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: Bernadette Sloyan; Researcher institution: CSIRO Parameter or Variable: CTD Oxygen; Abbreviation: CTDOXY; Unit: UMOL/KG; Observation type: CTD sensor; Sampling instrument: CTD; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: Bernadette Sloyan; Researcher institution: CSIRO Parameter or Variable: Bottle Oxygen; Abbreviation: OXYGEN; Unit: UMOL/KG; Observation type: Bottle, discrete; Sampling instrument: CTD; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: Bernadette Sloyan; Researcher institution: CSIRO Parameter or Variable: Nutrients; Abbreviation: SILCAT, NITRAT, NITRIT, PHSPHT; Unit: UMOL/KG; Observation type: Bottle, discrete; Sampling instrument: CTD; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: Bernadette Sloyan; Researcher institution: CSIRO Parameter or Variable: CFC; Abbreviation: CFC; Unit: PMOL/KG; Observation type: Bottle, discrete; Sampling instrument: CTD bottles; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: John Bullister, Marc Warner; Researcher institution: PMEL, U. Washington asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian coulometer for DIC measurement coulometer for DIC measurement measures dissolved inorganic carbon (DIC) A known amount of seawater is dispensed into a stripping chamber where it is acidified and purged with an inert gas. The amount of CO2 in the resulting gas stream is determined by absorbing the CO2 in an absorbent. The pH of the solution is monitored by measuring the transmittance . CTD CTD Conductivity-Temperature-Depth probe titrator titrator titrator RV Investigator ICES request for the vessel Investigator from AUSTRALIA(AU). Name : Investigator Country(s) : AUSTRALIA(AU) (ISO Country Code) Platform Class : 31 Research vessel Call Sign : VLMJ MMSI: 503791000 IMO : 9616888 Pennant : Australia Title : RV Commissioned Date : 2014-09-09 Current Length : 94 Built : 2014-08 Information Sources: - http://mnf.csiro.au/Vessel/Investigator-2014/Specifications.aspx Confirmed by NOAA on 2015-07-14.