gov.noaa.nodc:0314030 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 2026-04-30T20:15:53Z 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, water temperature, salinity, dissolved oxygen, nutrients and other measurements collected from profile and discrete sample observations during the R/V Mirai cruise MR19-03C, (EXPOCODE 49NZ20190927) in the North Pacific Ocean, Bering Sea, Chukchi Sea, Arctic Ocean, Beaufort Sea from 2019-09-27 to 2019-11-10 (NCEI Accession 0314030) 2026-04-15 publication 2026-04-08 creation International DOI Foundation (IDF) 10.25921/y240-d762 NOAA National Centers for Environmental Information gov.noaa.nodc:0314030 NCEI Archive Management System 0314030 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 Nico Lange GEOMAR Helmholtz Centre for Ocean Research Kiel (GEOMAR) nlange@geomar.de http://www.geomar.de/ HTTP GEOMAR Helmholtz Centre for Ocean Research Kiel (GEOMAR) website Institution web page information resourceProvider NORCE Norwegian Research Centre https://www.norceresearch.no/en/ HTTPS NORCE Norwegian Research Centre website Institution web page information resourceProvider Kazutoshi Sato Japan Agency for Marine-Earth Science and Technology (JAMSTEC) http://www.jamstec.go.jp HTTP Japan Agency for Marine-Earth Science and Technology (JAMSTEC) website Institution web page information principalInvestigator Akihiko Murata Japan Agency for Marine-Earth Science and Technology (JAMSTEC) http://www.jamstec.go.jp HTTP Japan Agency for Marine-Earth Science and Technology (JAMSTEC) website Institution web page information principalInvestigator Michio Aoyama Japan Agency for Marine-Earth Science and Technology (JAMSTEC) http://www.jamstec.go.jp HTTP Japan Agency for Marine-Earth Science and Technology (JAMSTEC) website Institution web page information principalInvestigator Sato, Kazutoshi Japan Agency for Marine-Earth Science and Technology (JAMSTEC) http://www.jamstec.go.jp HTTP Japan Agency for Marine-Earth Science and Technology (JAMSTEC) website Institution web page information author Murata, Akihiko Japan Agency for Marine-Earth Science and Technology (JAMSTEC) http://www.jamstec.go.jp HTTP Japan Agency for Marine-Earth Science and Technology (JAMSTEC) website Institution web page information author Aoyama, Michio Japan Agency for Marine-Earth Science and Technology (JAMSTEC) http://www.jamstec.go.jp HTTP Japan Agency for Marine-Earth Science and Technology (JAMSTEC) website Institution web page information author Japan Agency for Marine-Earth Science and Technology (JAMSTEC) http://www.jamstec.go.jp HTTP Japan Agency for Marine-Earth Science and Technology (JAMSTEC) website Institution web page information contributor University of Tokyo, Ocean Research Institute contributor tableDigital This dataset includes discrete profile measurements of Dissolved inorganic carbon (DIC), total alkalinity, water temperature, salinity, dissolved oxygen, nutrients and other measurements collected from profile and discrete sample observations during the R/V Mirai cruise MR19-03C, (EXPOCODE 49NZ20190927) in the North Pacific Ocean, Bering Sea, Chukchi Sea, Arctic Ocean, Beaufort Sea from 2019-09-27 to 2019-11-10. This dataset is the U.S. State Department MSR U2019-014 as part of the World Data Service for Oceanography. GO-SHIP Observation: decadal/bi-decadal changes in the Arctic Ocean Funding Information: Japan Agency for Marine-Earth Science and Technology (JAMSTEC) 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 https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0314030 Preview graphic PNG 0314030 NCEI ACCESSION NUMBER 2026-03-16 publication AMMONIUM (NH4) DISSOLVED INORGANIC CARBON (DIC) DISSOLVED OXYGEN NITRATE NITRITE phosphate SALINITY silicate total alkalinity WATER TEMPERATURE theme NODC DATA TYPES THESAURUS coulometer for DIC measurement CTD Niskin bottle nutrient autoanalyzer oxygen sensor salinometer temperature sensor titrator instrument NODC INSTRUMENT TYPES THESAURUS chemical discrete sample physical profile theme NODC OBSERVATION TYPES THESAURUS R/V MIRAI platform NODC PLATFORM NAMES THESAURUS Japan Agency for Marine-Earth Science and Technology University of Tokyo, Ocean Research Institute dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS NORCE Norwegian Research Centre dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS GLOBAL OCEAN DATA ANALYSIS PROJECT (GLODAP) The Global Ocean Ship-based Hydrographic Investigations Program (GO-SHIP) U. S. Department of State Marine Scientific Research (MSR) project NODC PROJECT NAMES THESAURUS Arctic Ocean Beaufort Sea Bering Sea Chukchi Sea North Pacific Ocean place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication JP/JAMSTEC > Japan Agency for Marine-Earth Science and Technology, Japan U-TOKYO/ORI > Ocean Research Institute, University of Tokyo 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 MR19-03C project Cruise ID 49NZ20190927 project EXPOCODE GLODAP > Global Ocean Data Analysis Project MSR > U.S. Department of State Marine Scientific Research project Global Change Master Directory (GCMD) Project 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 Ocean Carbon and Acidification Data System (OCADS) Project project Ocean Acidification Search Keywords Arctic Ocean project Reference Section ID This dataset is the U.S. State Department MSR U2019-014 as part of the World Data Service for Oceanography. project Research Projects EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > AMMONIA 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 > 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 Bottle discrete Profile theme OCADS Study Type ALKALI CTDSAL CTDTMP Nutrients OXYGEN SALNTY TCARBN theme Provider Variable Abbreviations AUTOANALYZER > AUTOANALYZER COULOMETERS CTD > Conductivity, Temperature, Depth NISKIN BOTTLES OXYGEN METERS > OXYGEN METERS SALINOMETERS TEMPERATURE SENSORS > TEMPERATURE SENSORS 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 MIRAI (call sign: JNSR, ICES code: 49NZ, 1996-) platform ICES/SeaDataNet Ship Codes OCEAN > ARCTIC OCEAN OCEAN > ARCTIC OCEAN > BEAUFORT SEA OCEAN > ARCTIC OCEAN > CHUKCHI SEA OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > BERING SEA 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 Arctic Ocean Beaufort Sea Bering Sea Chukchi Sea North Pacific Ocean place Provider Geographic Names accessLevel: Public otherRestrictions Cite as: Sato, Kazutoshi; Murata, Akihiko; Aoyama, Michio (2026). Dissolved inorganic carbon (DIC), total alkalinity, water temperature, salinity, dissolved oxygen, nutrients and other measurements collected from profile and discrete sample observations during the R/V Mirai cruise MR19-03C, (EXPOCODE 49NZ20190927) in the North Pacific Ocean, Bering Sea, Chukchi Sea, Arctic Ocean, Beaufort Sea from 2019-09-27 to 2019-11-10 (NCEI Accession 0314030). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/y240-d762. 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. license This dataset is licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) License. SPDX License: Creative Commons Attribution 4.0 International (CC-BY-4.0) Sato, Kazutoshi (2022). Various atmospheric and oceanic parameters collected from the Japanese research vessel Mirai in the North Pacific Ocean, Bering Sea, and Arctic Ocean from 2019-09-28 to 2019-11-10 (NCEI Accession 0246410). NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/81ck-8z38. 2022-03-08 publication International DOI Foundation (IDF) https://doi.org/10.25921/81ck-8z38 NOAA National Centers for Environmental Information gov.noaa.nodc:0246410 https://doi.org/10.25921/81ck-8z38 HTTPS https://doi.org/10.25921/81ck-8z38 Related dataset information Sato, Kazutoshi Kitami Institute of Technology satokazu@mail.kitami-it.ac.jp https://www.kitami-it.ac.jp/en/about-kitami/ HTTPS Kitami Institute of Technology website Institution web page information author NOAA National Centers for Environmental Information (NCEI) publisher tableDigital crossReference project Arctic Ocean Cruises 2022 publication https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/RepeatSections/CLIVAR_Arctic_Ocean.html HTTPS https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/RepeatSections/CLIVAR_Arctic_Ocean.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 Chukchi Sea, Bering Sea Cruises 2022 publication https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/RepeatSections/clivar_Chukchi_Sea.html HTTPS https://www.ncei.noaa.gov/access/ocean-carbon-acidification-data-system/oceans/RepeatSections/clivar_Chukchi_Sea.html Related resource information NOAA National Centers for Environmental Information (NCEI) publisher documentDigital crossReference project eng; USA utf8 environment oceans 166.121 -145.001 50 78.035 2019-09-27 2019-11-10 This dataset is the U.S. State Department MSR U2019-014 as part of the World Data Service for Oceanography. 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 11.48 https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0314030.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/y240-d762 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/314030 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/314030 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0243/0314030/ 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 0314030 v1.1 was published. 2026-04-15T15:43:29Z NCEI Accession 0314030 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0314030/1.1 HTTPS NCEI Accession 0314030 v1.1 published 2026-04-15T15:43:29Z download dataset Parameter or Variable: Dissolved Inorganic Carbon; Abbreviation: TCARBN; Unit: UMOL/KG; Observation type: discrete; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: Niskin Bottles; Detailed sampling and analyzing information: Measurements of DIC and TA were undertaken using a DIC–TA measuring system (Nippon ANS, Inc., Japan) that included separate units capable of analyzing DIC and TA simultaneously. The DIC unit includes a seawater dispensing system, CO2 extraction system and coulometer. The seawater dispensing system has an autosampler (six ports) that takes seawater in a 250 mL borosilicate glass bottle ((DURAN® glass bottle, 250 mL) and dispenses the seawater into a pipette of nominal 15-mL volume under the control of a PC. The pipette is maintained at a temperature of 25 °C by a water jacket fed from a water bath set at 25 °C. The CO2 dissolved in a seawater sample is extracted in the stripping chamber of the CO2 extraction system by the addition of phosphoric acid (10% v/v). The stripping chamber is approximately 25-cm long and has a fine frit at the bottom. The acid is added to the stripping chamber from the bottom of the chamber by pressurizing an acid bottle for a given time that pushes out the correct amount of acid. The pressurizing is conducted using nitrogen gas (99.9999%). After the acid is transferred to the stripping chamber, the seawater sample in the pipette is introduced to the stripping chamber using the same method as for adding the acid. The seawater reacts with phosphoric acid and is stripped of its CO2 by bubbling the nitrogen gas through the fine frit at the bottom of the stripping chamber. The CO2 stripped in the chamber is carried by the nitrogen gas (flow rate: is 130 mL min−1) to the coulometer through a dehydrating module. The TA unit comprises a water dispensing system, autosyringe (Hamilton) for hydrochloric acid, spectrophotometer (TM-UV/VIS C10082CAH, Hamamatsu Photonics, Japan) and light source (Mikropack, Germany) that are controlled automatically by a PC. The water dispensing system has a water-jacketed pipette and a titration cell maintained at the temperature of 25 °C. A seawater sample of approximately 42 mL is transferred from a sample bottle (DURAN® glass bottle, 250 mL) into a pipette by pressurizing the sample bottle (using nitrogen gas), following which it is introduced into the titration cell. First, seawater is used to rinse the titration cell and then Milli-Q water is introduced into the titration cell for a further rinse. A seawater sample of approximately 42 mL is then weighed again in the pipette and transferred into the titration cell. For a seawater blank, the absorbance is measured at three wavelengths (730, 616 and 444 nm). After the measurement, an acid titrant, which is a mixture of approximately 0.05 M HCl at 25 °C in 0.65 M NaCl and 38 μM bromocresol green, is added into the titration cell. The volume of the acid titrant is changed between 1.780 and 2.100 mL according to the estimated values of the TA. The seawater + acid titrant solution is stirred for over 9 min with bubbling by nitrogen gas in the titration cell. Then, the absorbance at the three wavelengths is measured.; Replicate information: Replicate analysis was undertaken on approximately every fifth seawater sample. The repeatability for DIC and TA was estimated as 0.20 ± 2.49 (n = 108) and 0.63 ± 3.05 (n = 108) μmol kg−1, respectively (based on data that have not undergone QC).; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Method reference: Yao W. and R. H. Byrne (1998) Simplified seawater alkalinity analysis: Use of linear array spectrometers. Deep-Sea Research I 45, 1383-1392.; Researcher institution: JAMSTEC Parameter or Variable: Total alkalinity; Abbreviation: ALKALI; Unit: UMOL/KG; Observation type: discrete; In-situ / Manipulation / Response variable: in-situ observation; Measured or calculated: Measured; Type of titration: Spectrophotometry; Detailed sampling and analyzing information: Measurements of DIC and TA were undertaken using a DIC–TA measuring system (Nippon ANS, Inc., Japan) that included separate units capable of analyzing DIC and TA simultaneously. The DIC unit includes a seawater dispensing system, CO2 extraction system and coulometer. The seawater dispensing system has an autosampler (six ports) that takes seawater in a 250 mL borosilicate glass bottle ((DURAN® glass bottle, 250 mL) and dispenses the seawater into a pipette of nominal 15-mL volume under the control of a PC. The pipette is maintained at a temperature of 25 °C by a water jacket fed from a water bath set at 25 °C. The CO2 dissolved in a seawater sample is extracted in the stripping chamber of the CO2 extraction system by the addition of phosphoric acid (10% v/v). The stripping chamber is approximately 25-cm long and has a fine frit at the bottom. The acid is added to the stripping chamber from the bottom of the chamber by pressurizing an acid bottle for a given time that pushes out the correct amount of acid. The pressurizing is conducted using nitrogen gas (99.9999%). After the acid is transferred to the stripping chamber, the seawater sample in the pipette is introduced to the stripping chamber using the same method as for adding the acid. The seawater reacts with phosphoric acid and is stripped of its CO2 by bubbling the nitrogen gas through the fine frit at the bottom of the stripping chamber. The CO2 stripped in the chamber is carried by the nitrogen gas (flow rate: is 130 mL min−1) to the coulometer through a dehydrating module. The TA unit comprises a water dispensing system, autosyringe (Hamilton) for hydrochloric acid, spectrophotometer (TM-UV/VIS C10082CAH, Hamamatsu Photonics, Japan) and light source (Mikropack, Germany) that are controlled automatically by a PC. The water dispensing system has a water-jacketed pipette and a titration cell maintained at the temperature of 25 °C. A seawater sample of approximately 42 mL is transferred from a sample bottle (DURAN® glass bottle, 250 mL) into a pipette by pressurizing the sample bottle (using nitrogen gas), following which it is introduced into the titration cell. First, seawater is used to rinse the titration cell and then Milli-Q water is introduced into the titration cell for a further rinse. A seawater sample of approximately 42 mL is then weighed again in the pipette and transferred into the titration cell. For a seawater blank, the absorbance is measured at three wavelengths (730, 616 and 444 nm). After the measurement, an acid titrant, which is a mixture of approximately 0.05 M HCl at 25 °C in 0.65 M NaCl and 38 μM bromocresol green, is added into the titration cell. The volume of the acid titrant is changed between 1.780 and 2.100 mL according to the estimated values of the TA. The seawater + acid titrant solution is stirred for over 9 min with bubbling by nitrogen gas in the titration cell. Then, the absorbance at the three wavelengths is measured.; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Method reference: Yao W. and R. H. Byrne (1998), Simplified seawater alkalinity analysis: Use of linear array spectrophotometers. Deep-sea Research Part I, 45, 1383-1392; Researcher institution: JAMSTEC Parameter or Variable: CTD Temperature; Abbreviation: CTDTMP; Unit: degrees celcius; Observation type: CTD sensor; Sampling instrument: CTD; Analyzing instrument: CTD Sensor; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value Parameter or Variable: CTD Salinity; Abbreviation: CTDSAL; Observation type: CTD sensor; Sampling instrument: CTD; Analyzing instrument: CTD sensor; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value Parameter or Variable: Salinity; Abbreviation: SALNTY; Observation type: Discrete, bottle; Sampling instrument: Niskin Bottles; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value Parameter or Variable: Dissolved Oxygen; Abbreviation: OXYGEN; Unit: UMOL/KG; Observation type: Discrete, bottle; Sampling instrument: Niskin Bottles; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value Parameter or Variable: Silicate, nitrat, nitrit, phosphate; Abbreviation: Nutrients; Unit: UMOL/KG; Observation type: Discrete, bottle; Sampling instrument: Niskin Bottles; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value 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 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 temperature sensor temperature sensor A sensor used to measure temperature. titrator titrator titrator R/V MIRAI R/V, Japan Agency for Marine-Earth Science and Technology (JAMSTEC); built 1972 as Mutsu; renamed on 2 Dec 1996; active as Mar 2007;