gov.noaa.nodc:0209630 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 2025-11-29T07:21:28Z 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, chlorofluorocarbons (CFC11, CFC12), temperature, salinity, dissolved oxygen, nutrients and other hydrographic and chemical variables collected from discrete samples and profile observations during the R/V Thomas G. Thompson cruise GO-SHIP_I06S (EXPOCODE 325020190403) in the Southern and Indian Oceans from 2019-04-03 to 2019-05-14 (NCEI Accession 0209630) 2020-04-06 publication 2021-08-17 revision 2020-04-06 creation International DOI Foundation (IDF) 10.25921/v20y-7221 NOAA National Centers for Environmental Information gov.noaa.nodc:0209630 NCEI Archive Management System 0209630 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 Alejandro Orsi Texas A&M University (TAMU) visit@tamu.edu https://www.tamu.edu/ HTTPS Texas A&M University (TAMU) website Institution web page information principalInvestigator Rik Wanninkhof NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) Rik.Wanninkhof@noaa.gov https://www.aoml.noaa.gov/ HTTPS NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) website Institution web page information principalInvestigator Richard Feely NOAA Pacific Marine Environmental Laboratory (PMEL) Richard.A.Feely@noaa.gov https://www.pmel.noaa.gov/ HTTPS NOAA Pacific Marine Environmental Laboratory (PMEL) website Institution web page information principalInvestigator Andrew G. 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 Dennis A. Hansell University of Miami Rosenstiel School of Marine and Atmospheric Science (RSMAS) http://www.rsmas.miami.edu HTTP University of Miami Rosenstiel School of Marine and Atmospheric Science (RSMAS) website Institution web page information principalInvestigator Susan Becker Scripps Institution of Oceanography (SIO) https://scripps.ucsd.edu/ HTTPS Scripps Institution of Oceanography (SIO) 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 James H. Swift Scripps Institution of Oceanography (SIO) scrippsnews@ucsd.edu https://scripps.ucsd.edu/ HTTPS Scripps Institution of Oceanography (SIO) website Institution web page information collaborator Dong-Ha Min collaborator Dana Greeley NOAA Pacific Marine Environmental Laboratory (PMEL) dana.greeley@noaa.gov https://www.pmel.noaa.gov/ HTTPS NOAA Pacific Marine Environmental Laboratory (PMEL) 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 Orsi, Alejandro Texas A&M University (TAMU) https://www.tamu.edu/ HTTPS Texas A&M University (TAMU) website Institution web page information author Wanninkhof, Rik NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) https://www.aoml.noaa.gov/ HTTPS NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) website Institution web page information author Feely, Richard A. NOAA Pacific Marine Environmental Laboratory (PMEL) https://www.pmel.noaa.gov/ HTTPS NOAA Pacific Marine Environmental Laboratory (PMEL) website Institution web page information author Greeley, Dana NOAA Pacific Marine Environmental Laboratory (PMEL) https://www.pmel.noaa.gov/ HTTPS NOAA Pacific Marine Environmental Laboratory (PMEL) website Institution web page information author Dickson, Andrew G. Scripps Institution of Oceanography (SIO) adickson@ucsd.edu https://scripps.ucsd.edu/ HTTPS Scripps Institution of Oceanography (SIO) website Institution web page information author Min, Dong-Ha author Swift, James H. Scripps Institution of Oceanography (SIO) https://scripps.ucsd.edu/ HTTPS Scripps Institution of Oceanography (SIO) website Institution web page information author Becker, Susan Scripps Institution of Oceanography (SIO) https://scripps.ucsd.edu/ HTTPS Scripps Institution of Oceanography (SIO) website Institution web page information author Hansell, Dennis A. University of Miami Rosenstiel School of Marine and Atmospheric Science (RSMAS) http://www.rsmas.miami.edu HTTP University of Miami Rosenstiel School of Marine and Atmospheric Science (RSMAS) website Institution web page information author McNichol, Ann Woods Hole Oceanographic Institution (WHOI) http://www.whoi.edu HTTP Woods Hole Oceanographic Institution (WHOI) 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 NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) https://www.aoml.noaa.gov/ HTTPS NOAA Atlantic Oceanographic and Meteorological Laboratory (AOML) website Institution web page information contributor NOAA Pacific Marine Environmental Laboratory (PMEL) https://www.pmel.noaa.gov/ HTTPS NOAA Pacific Marine Environmental Laboratory (PMEL) website Institution web page information contributor Texas A&M University (TAMU) https://www.tamu.edu/ HTTPS Texas A&M University (TAMU) website Institution web page information 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 profile measurements of dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, temperature, salinity, dissolved oxygen, nutrients, chlorofluorocarbons (CFC11, CFC12) and other hydrographic and chemical measurements obtained during R/V Thomas G. Thompson cruise GO-SHIP_I06S (EXPOCODE 325020190403) in the Southern and Indian Oceans from 2019-04-03 to 2019-05-14. The U.S. GO-SHIP I6S 2019 hydrographic section revisited this intercontinental line after its first occupation in 2008, itself a repeat of the original 1996 WOCE transect by France. This dataset is available to the public for a wide variety of uses including scientific research and analysis. Funding Information: National Science Foundation, National Oceanic and Atmospheric Administration 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 0209630 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:0209630 Preview graphic PNG 0209630 NCEI ACCESSION NUMBER 2020-04-06 publication CHLOROFLUOROCARBON-11 (CFC-11) CHLOROFLUOROCARBON-12 (CFC-12) DISSOLVED INORGANIC CARBON (DIC) DISSOLVED OXYGEN NITRATE NITRITE pH phosphate SALINITY silicate total alkalinity WATER TEMPERATURE theme NODC DATA TYPES THESAURUS carbon dioxide (CO2) gas analyzer CTD Niskin bottle nutrient autoanalyzer oxygen sensor salinometer titrator instrument NODC INSTRUMENT TYPES THESAURUS chemical discrete sample physical profile theme NODC OBSERVATION TYPES THESAURUS R/V THOMAS G. THOMPSON platform NODC PLATFORM NAMES THESAURUS NOAA Atlantic Oceanographic and Meteorological Laboratory NOAA Pacific Marine Environmental Laboratory Scripps Institution of Oceanography Texas A&M University 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) project NODC PROJECT NAMES THESAURUS Indian Ocean Southern Ocean place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication DOC/NOAA/OAR/AOML > Atlantic Oceanographic and Meteorological Laboratory, OAR, NOAA, U.S. Department of Commerce DOC/NOAA/OAR/PMEL > Pacific Marine Environmental Laboratory, OAR, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2026 revision 23 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 TN366, SOCCOM project Cruise ID 325020190403 project EXPOCODE Ocean Carbon and Acidification Data System (OCADS) Project project Ocean Acidification Search Keywords GO-SHIP I06S project Reference Section ID The Global Ocean Ship-based Hydrographic Investigations Program (GO-SHIP) project Research Projects EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRATE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRITE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > OXYGEN EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PH EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PHOSPHATE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > SILICATE EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY theme Global Change Master Directory (GCMD) Science Keywords 2026 revision 23 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 Profile theme OCADS Study Type ALKALI CFC11, CFC12 CTDSAL CTDTMP OXYGEN PH_TOT SILCAT, NITRAT, NITRIT, PHSPHT TCARBN theme Provider Variable Abbreviations AUTOANALYZER > AUTOANALYZER CO2 ANALYZERS > CO2 ANALYZERS CTD > Conductivity, Temperature, Depth NISKIN BOTTLES OXYGEN METERS > OXYGEN METERS SALINOMETERS instrument Global Change Master Directory (GCMD) Instrument Keywords 2026 revision 23 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 THOMAS G. THOMPSON (call sign: KTDQ, ICES code: 3250, 1991-) platform ICES/SeaDataNet Ship Codes OCEAN > INDIAN OCEAN OCEAN > SOUTHERN OCEAN place Global Change Master Directory (GCMD) Location Keywords 2026 revision 23 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 Indian Ocean Southern Ocean place Provider Geographic Names accessLevel: Public otherRestrictions Cite as: Orsi, Alejandro; Wanninkhof, Rik; Feely, Richard A.; Greeley, Dana; Dickson, Andrew G.; Min, Dong-Ha; Swift, James H.; Becker, Susan; Hansell, Dennis A.; McNichol, Ann; Key, Robert M. (2020). Dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, chlorofluorocarbons (CFC11, CFC12), temperature, salinity, dissolved oxygen, nutrients and other hydrographic and chemical variables collected from discrete samples and profile observations during the R/V Thomas G. Thompson cruise GO-SHIP_I06S (EXPOCODE 325020190403) in the Southern and Indian Oceans from 2019-04-03 to 2019-05-14 (NCEI Accession 0209630). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/v20y-7221. 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. CLIVAR Repeat Section I06S 2022 publication https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/RepeatSections/clivar_i06.html HTTPS https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/RepeatSections/clivar_i06.html related resource information NOAA National Centers for Environmental Information (NCEI) publisher documentDigital 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 28.095 31.534 -68.6 -33.234 2019-04-03 2019-05-14 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 175.676 https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0209630.html HTTPS Web browser Project Metadata Navigate directly to the URL for a descriptive web page with download links. information https://doi.org/10.25921/v20y-7221 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/209630 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/209630 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0153/0209630/ 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 0209630 v1.1 was published. 2020-04-06T21:04:37Z NCEI Accession 0209630 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0209630/1.1 HTTPS NCEI Accession 0209630 v1.1 published 2020-04-06T21:04:37Z download NCEI Accession 0209630 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. 2021-08-17T01:46:42Z NCEI Accession 0209630 v2.2 publication https://www.ncei.noaa.gov/archive/accession/0209630/2.2 HTTPS NCEI Accession 0209630 v2.2 published 2021-08-17T01:46:42Z download dataset Parameter or Variable: Dissolved Inorganic Carbon; Abbreviation: TCARBN; Unit: UMOL/KG; Observation type: Discrete, bottle; Measured or calculated: Measured; Sampling instrument: Niskin Bottles; Analyzing instrument: coulometry with two analytical systems (AOML 3 and AOML 4); Detailed sampling and analyzing information: Samples for DIC measurements were drawn (according to procedures outlined in the PICES Publication, Guide to Best Practices for Ocean CO2 Measurements [Dickson2007]) from Niskin bottles into 294 ml borosilicate glass bottles using silicone tubing. The flasks were rinsed once and filled from the bottom with care not to entrain any bubbles, overflowing by at least one-half volume. The sample tube was pinched off and withdrawn, creating a 6 ml headspace, followed by 0.16 ml of saturated HgCl2 solution which was added as a preservative. The sample bottles were then sealed with glass stoppers lightly covered with Apiezon-L grease and were stored at room temperature for a maximum of 12 hours.; Standardization description: The accuracy of the DICE measurement is determined with the use of standards (Certified Reference Materials (CRMs), consisting of filtered and UV irradiated seawater) supplied by Dr. A. Dickson of Scripps Institution of Oceanography (SIO). The CRM accuracy is determined manometrically on land in San Diego and the DIC data re-ported to the data base have been corrected to this batch 178 CRM value. The CRM certified value for this batch is 1952.62 µmol/kg.; Standardization frequency: Daily; CRM manufacturer: Andrew Dickson Laboratory at SIO; CRM batch number: 178 and 180; Preservation method: Mercuric chloride solution; Preservative volume: 200 μL; Uncertainty: The accuracy of the DICE measurement is determined with the use of standards (Certified Reference Materials (CRMs), consisting of filtered and UV irradiated seawater) supplied by Dr. A. Dickson of Scripps Institution of Oceanography (SIO). The CRM accuracy is determined manometrically on land in San Diego and the DIC data re-ported to the data base have been corrected to this batch 178 CRM value. The CRM certified value for this batch is 1952.62 µmol/kg.; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Method reference: Guide to Best Practices for Ocean CO2 Measurements [Dickson2007]); Researcher name: Rik Wanninkhoff, Dana Greely; Researcher institution: NOAA/PMEL/AOML Parameter or Variable: Total alkalinity; Abbreviation: ALKALI; Unit: UMOL/KG; Observation type: Discrete, bottle; Measured or calculated: Measured; Sampling instrument: Niskin Bottles; Type of titration: Potentiometric; Cell type (open or closed): Open; Detailed sampling and analyzing information: Samples are dispensed using a Sample Delivery System (SDS) consisting of a volumetric pipette, various relay valves, and two air pumps controlled by LabVIEW 2012. Before filling the jacketed cell with a new sample for analysis, the volumetric pipette is cleared of any residual from the previous sample with the aforementioned air pumps. The pipette is then rinsed with new sample and filled, allowing for overflow and time for the sample temperature to equilibrate. The sample bottle temperature is measured using a DirecTemp thermistor probe inserted into the sample bottle and the volumetric pipette temperature is measured using a DirecTemp surface probe placed directly on the pipette. These temperature measurements are used to convert the sample volume to mass for analysis. Samples are analyzed using an open cell titration procedure using two 250 mL jacketed cells. One sample is un-dergoing titration while the second is being prepared and equilibrating to 20°C for analysis. After an initial aliquot of approximately 2.3-2.4 mL of standardized hydrochloric acid (~0.1M HCl in ~0.6M NaCl solution), the sample is stirred for 5 minutes while air is bubbled into it at a rate of 200 scc/m to remove any liberated carbon dioxide gas. A Metrohm 876 Dosimat Plus is used for all standardized hydrochloric acid additions. After equilibration, ~19 aliquots of 0.035 ml are added. Between the pH range of 3.5 to 3.0, the progress of the titration is monitored using a pH glass electrode/reference electrode cell, and the total alkalinity is computed from the titrant volume and e.m.f. measure-ments using a non-linear least-squares approach ([Dickson2007]). An Agilent 34970A Data Acquisition/Switch Unit with a 34901A multiplexer is used to read the voltage measurements from the electrode and monitor the temperatures from the sample, acid, and room. The calculations for this procedure are performed automatically using LabVIEW 2012.; Standardization description: The samples were standardized using Certified Reference Materials (CRMs) provided by Dr. A. Dickson of Scripps Institution of Oceanography.; Standardization frequency: Daily; CRM manufacturer: Certified Reference Material (Dr. Andrew Dickson, Marine Physical Laboratory, La Jolla, California); CRM batch number: 178 2216.53 ± 0.61 𝜇mol/kg; 180 2224.47 ± 0.56 𝜇mol/kg; Preservation method: Mercuric chloride; Preservative volume: 200 μL; Uncertainty: Duplicate Standard Deviation ± 1.55 µmol kg-1 (143) [± std. dev. (n)]; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Method reference: Dickson 2007; Researcher name: Andrew Dickson; Researcher institution: SIO Parameter or Variable: pH on total scale; Abbreviation: PH_TOT; Observation type: discrete, bottle; Sampling instrument: Niskin Bottles; Analyzing instrument: Agilent 8453 spectrophotometer; Detailed sampling and analyzing information: pH was measured spectrophotometrically on the total hydrogen scale using an Agilent 8453 spectrophotometer and in accordance with the methods outlined by Carter et al., 2013. [Carter2013]. A Kloehn V6 syringe pump was used to autonomously fill, mix, and dispense sample through the custom 10cm flow-through jacketed cell. A Thermo Fisher Isotemp recirculating water bath was used to maintain the cell temperature at 25.0°C during analyses, and a YSI 4600 precision thermometer and probe were used to monitor and record the temperature of each sample during the spec-trophotometric measurements. Purified meta-cresol purple (mCP) was the indicator used to measure the absorbance of light measured at two different wavelengths (434 nm, 578 nm) corresponding to the maximum absorbance peaks for the acidic and basic forms of the indicator dye. A baseline absorbance was also measured and subtracted from these wavelengths. The baseline absorbance was determined by averaging the absorbances from 725-735nm. The ratio of the absorbances was then used to calculate pH on the total scale using the equations outlined in Liu et al., 2011 [Liu2011]. The salinity data used was obtained from the salinity analysis conducted on board.; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: Andrew Dickson; Researcher institution: SIO 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: Jim Swift; Researcher institution: SIO 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: Jim Swift; Researcher institution: SIO Parameter or Variable: Nutrients; Abbreviation: SILCAT, NITRAT, NITRIT, PHSPHT; Unit: UMOL/KG; Observation type: Bottle, discrete; Sampling instrument: CTD Niskin Bottles; Analyzing instrument: Discrete samples were run on a continuous flow analyzer.; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: Susan Becker, Jim Swift; Researcher institution: SIO Parameter or Variable: Dissolved Oxygen; Abbreviation: OXYGEN; Unit: UMOL/KG; Observation type: Bottle, discrete; Sampling instrument: CTD Niskin Bottles; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: Susan Becker, Jim Swift; Researcher institution: SIO Parameter or Variable: Chlorofluorocarbons; Abbreviation: CFC11, CFC12; Unit: PMOL/KG; Observation type: Bottle, discrete; Sampling instrument: CTD Niskin Bottles; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Researcher name: Dong-Ha Min; Researcher institution: UT asNeeded Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness. NOAA National Centers for Environmental Information custodian carbon dioxide (CO2) gas analyzer carbon dioxide (CO2) gas analyzer 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. CTD CTD Conductivity-Temperature-Depth probe Niskin bottle Niskin bottle Device for obtaining samples of seawater at a specific depth Why special entry for Niskin bottle but no entry for Nansen bottle? nutrient autoanalyzer nutrient autoanalyzer 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 oxygen sensor oxygen sensor Any instrument that measures oxygen content in a compound. salinometer salinometer generic salinometer use salinometer when the instrument type used is unclear but the data include salinity measurements titrator titrator titrator R/V THOMAS G. THOMPSON Use this platform for data attributed to R/V Thomas G. Thompson that were collected between July 1991 and present. R/V Thomas G. Thompson (AGOR-23) Owned by US Navy, leased to University of Washington. Active dates: July 1991 (Source: http://www.navsource.org/archives/09/57/5723.htm, last accessed on 20 Dec 2011)