gov.noaa.nodc:0247208 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 2026-07-28T13:35:53Z ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) High-resolution record of surface seawater carbon dioxide (CO2) content, water temperature, sea surface salinity and other parameters collected in Sitka Harbor, Alaska, USA from 2017-06-01 to 2021-04-27 (NCEI Accession 0247208) 2022-02-11 publication 2022-02-04 creation International DOI Foundation (IDF) 10.25921/9vnv-0g64 NOAA National Centers for Environmental Information gov.noaa.nodc:0247208 NCEI Archive Management System 0247208 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 Wiley Evans Hakai Institute wiley.evans@hakai.org https://hakai.org/ HTTPS Hakai Institute website Institution web page information resourceProvider Hakai Institute https://hakai.org/ HTTPS Hakai Institute website Institution web page information resourceProvider Chris Whitehead Sitka Tribe of Alaska principalInvestigator Wiley Evans Hakai Institute wiley.evans@hakai.org https://hakai.org/ HTTPS Hakai Institute website Institution web page information principalInvestigator Kari Lanphier Sitka Tribe of Alaska principalInvestigator Willoughby Peterson Sitka Tribe of Alaska principalInvestigator Esther Kennedy Sitka Tribe of Alaska egkennedy@ucdavis.edu principalInvestigator Burke Hales Oregon State University, College of Earth, Ocean, and Atmospheric Sciences (OSU-CEOAS) bhales@coas.oregonstate.edu http://ceoas.oregonstate.edu/ HTTP Oregon State University, College of Earth, Ocean, and Atmospheric Sciences (OSU-CEOAS) website Institution web page information principalInvestigator Whitehead, Chris Sitka Tribe of Alaska author Evans, Wiley Hakai Institute https://hakai.org/ HTTPS Hakai Institute website Institution web page information author Lanphier, Kari Sitka Tribe of Alaska author Peterson, Willoughby Sitka Tribe of Alaska author Kennedy, Esther G. Sitka Tribe of Alaska author Hales, Burke Oregon State University, College of Earth, Ocean, and Atmospheric Sciences http://ceoas.oregonstate.edu/ HTTP Oregon State University, College of Earth, Ocean, and Atmospheric Sciences (OSU-CEOAS) website Institution web page information author Oregon State University (OSU) http://oregonstate.edu/ HTTP Oregon State University (OSU) website Institution web page information contributor Hakai Institute https://hakai.org/ HTTPS Hakai Institute website Institution web page information contributor tableDigital This dataset includes measurements of partial pressure of carbon dioxide (pCO2), sea surface salinity, sea surface temperature and other parameters collected in Sitka Harbor, Alaska, USA from 2017-06-01 to 2021-04-27. Sitka Tribe of Alaska’s Environmental Research Laboratory adjacent to Sitka Harbor, has been a site for shore-based and high-resolution measurement of surface seawater CO2 content since June 2017. Temperature, salinity, and CO2 partial pressure measurements are made near-continuously from a seawater sample line with an intake 50 m from shore and at a depth of 1 m in Sitka Harbor. The effort to collect these data is a collaboration between the Sitka Tribe of Alaska and the Hakai Institute with support from the Alaska Ocean Observing System This dataset is available to the public for a wide variety of uses including scientific research and analysis. Funding Information: Bureau of Indian Affairs, Alaska Ocean Observing System (OAP, 20220113) 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:0247208 Preview graphic PNG 0247208 NCEI ACCESSION NUMBER 2022-01-13 publication DISSOLVED INORGANIC CARBON (DIC) partial pressure of carbon dioxide - water pH SALINITY - SURFACE WATER total alkalinity WATER TEMPERATURE theme NODC DATA TYPES THESAURUS carbon dioxide (CO2) gas analyzer Non-dispersive infrared (NDIR) dissolved inorganic carbon (DIC) analyzer salinometer temperature sensor titrator instrument NODC INSTRUMENT TYPES THESAURUS chemical physical surface measurements time series theme NODC OBSERVATION TYPES THESAURUS UNKNOWN PLATFORMS OF CANADA platform NODC PLATFORM NAMES THESAURUS Hakai Institute Oregon State University dataCentre NODC COLLECTING INSTITUTION NAMES THESAURUS Hakai Institute dataCentre NODC SUBMITTING INSTITUTION NAMES THESAURUS US DOC; NOAA; Office of Oceanic and Atmospheric Research; Ocean Acidification Program (OAP) project NODC PROJECT NAMES THESAURUS Gulf of Alaska North Pacific Ocean place NODC SEA AREA NAMES THESAURUS oceanography theme WMO_CategoryCode 2012-09-15 publication 189920170601 project EXPOCODE Ocean Carbon and Acidification Data System (OCADS) Project project Ocean Acidification Search Keywords Coastal project Reference Section ID EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > SURFACE SALINITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > ALKALINITY EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > CARBON DIOXIDE EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > INORGANIC CARBON 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 Surface measurement Time series theme OCADS Study Type SST SWpCO2@SST Salinity theme Provider Variable Abbreviations CO2 ANALYZERS > CO2 ANALYZERS CO2NDIR > Carbon Dioxide Nondispersive Infrared Analyzer SALINOMETERS TEMPERATURE SENSORS > TEMPERATURE SENSORS 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 OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN > GULF OF ALASKA 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 Gulf of Alaska North Pacific Ocean Sitka Harbor Southeast Alaska place Provider Geographic Names accessLevel: public otherRestrictions Cite as: Whitehead, Chris; Evans, Wiley; Lanphier, Kari; Peterson, Willoughby; Kennedy, Esther G.; Hales, Burke (2022). High-resolution record of surface seawater carbon dioxide (CO2) content, water temperature, sea surface salinity and other parameters collected in Sitka Harbor, Alaska, USA from 2017-06-01 to 2021-04-27 (NCEI Accession 0247208). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/9vnv-0g64. 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. 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 Evans, Wiley; Campbell, Katie; Weekes, Carrie (2024). Discrete profile measurements of CO2 system and other hydrographic and chemical parameters sampled at the Hakai Institute Oceanographic Station QU39 in Northern Strait of Georgia, British Columbia, Canada from 2016-01-19 to 2023-12-19 (NCEI Accession 0297364). NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/5s5m-6d70. 2024-09-20 publication International DOI Foundation (IDF) https://doi.org/10.25921/5s5m-6d70 NOAA National Centers for Environmental Information gov.noaa.nodc:0297364 https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0297364.html HTTPS https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0297364.html Related dataset information Evans, Wiley Hakai Institute https://hakai.org/ HTTPS Hakai Institute website Institution web page information author Campbell, Katie Hakai Institute https://hakai.org/ HTTPS Hakai Institute website Institution web page information author Weekes, Carrie Hakai Institute https://hakai.org/ HTTPS Hakai Institute website Institution web page information author NOAA National Centers for Environmental Information (NCEI) publisher tableDigital crossReference project Evans, Wiley; Michalchuk, Trevor; Pollock, Lydia (2026). High-resolution record of surface seawater carbon dioxide (CO2) content collected from Pacific Ecosystem Autonomous Research Laboratory (PEARL) shore-side research station in Barkley Sound, British Columbia, Canada from 2025-08-06 to 2025-12-15 (NCEI Accession 0311778). NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/jm8y-tf55. 2026-01-20 publication International DOI Foundation (IDF) https://doi.org/10.25921/jm8y-tf55 NOAA National Centers for Environmental Information gov.noaa.nodc:0311778 https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0311778.html HTTPS https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0311778.html Related dataset information Evans, Wiley Hakai Institute https://hakai.org/ HTTPS Hakai Institute website Institution web page information author Michalchuk, Trevor Hakai Institute https://hakai.org/ HTTPS Hakai Institute website Institution web page information author Pollock, Lydia Hakai Institute https://hakai.org/ HTTPS Hakai Institute website Institution web page information author NOAA National Centers for Environmental Information (NCEI) publisher tableDigital crossReference project Evans, Wiley; Bedard, Kimberly; Campbell, Katie; Hateley, Shawn (2026). Surface seawater and marine boundary layer CO2 observations made from the Bute Inlet Ocean Observing Station (BIOOS) Buoy in British Columbia Coast, Gulf of Alaska; North Pacific Ocean from 2025-02-15 to 2025-11-21 (NCEI Accession 0311773). NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/xtvm-5m04. 2026-01-20 publication International DOI Foundation (IDF) https://doi.org/10.25921/xtvm-5m04 NOAA National Centers for Environmental Information gov.noaa.nodc:0311773 https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0311773.html HTTPS https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0311773.html Related dataset information Evans, Wiley Hakai Institute https://hakai.org/ HTTPS Hakai Institute website Institution web page information author Bedard, Kimberly Hakai Institute https://hakai.org/ HTTPS Hakai Institute website Institution web page information author Campbell, Katie Hakai Institute https://hakai.org/ HTTPS Hakai Institute website Institution web page information author Hateley, Shawn Hakai Institute https://hakai.org/ HTTPS Hakai Institute website Institution web page information author NOAA National Centers for Environmental Information (NCEI) publisher tableDigital crossReference project eng; USA utf8 environment oceans -135.3456 -135.3456 57.0526 57.0526 2017-06-01 2021-04-27 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 66.316 https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0247208.html HTTPS Web browser Project Metadata Navigate directly to the URL for a descriptive web page with download links. information https://doi.org/10.25921/9vnv-0g64 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/247208 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/247208 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0154/0247208/ 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 0247208 v1.1 was published. 2022-02-11T21:37:18Z NCEI Accession 0247208 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0247208/1.1 HTTPS NCEI Accession 0247208 v1.1 published 2022-02-11T21:37:18Z download dataset Parameter or Variable: pCO2 (fCO2) autonomous; Abbreviation: SWpCO2@SST; Unit: µatm; Observation type: Measurements from continuously flowing seawater stream; Measured or calculated: Calculated from measured CO2 mole fractions (xCO2) and ambient atmospheric pressure.; Calculation method and parameters: Calculated from measured CO2 mole fractions (xCO2) and ambient atmospheric pressure; Sampling instrument: Dakunalytics, LLC Burke-o-Lator pCO2/TCO2 Analyzer (with bubble-type equilibrator); Location of seawater intake: Seawater drawn from 1-m depth approximately 50 m from shore in Sitka Harbor; southeast Alaska; 57.0526°N, 135.3456°W; Depth of seawater intake: 1-m; Analyzing instrument: Dakunalytics, LLC Burke-o-Lator (BoL) pCO2/TCO2 Analyzer use LI-COR LI-840A non-dispersive infrared detectors; Detailed sampling and analyzing information: Seawater pCO2 data were calculated from corrected measurements of CO2 mixing ratio (xCO2) made using a Dakunalytics, LLC Burke-o-Lator (BoL) pCO2/TCO2 Analyzer following many recommended protocols by Pierrot et al. (2009) with the system theory and calculations described in detail elsewhere (Hales et al., 2004; Evans et al., 2015; Evans et al., 2019). Seawater continuously flowed at ~1 GPM first through a Sea-Bird Electronics SBE 45 MicroTSG Thermosalinograph and then to the equilibrator (bubble-type). Carrier gas (marine air) is pumped into the equilibrator from the electronics box at ~100 ml min-1. Full equilibration was verified by injecting high and low CO2 gas standard into the equilibration chamber and verifying carrier gas concentrations returned to the same pre-disturbance xCO2. These tests also revealed the response time of the equilibrator to be ~5 mins. Equilibrated carrier gas is then supplied to a non-dispersive infrared gas analyzer (LI-COR LI840A CO2/H2O) housed within the electronics box. Carrier gas is then recirculated through the system, minimizing the need for make-up by the equilibrator. Pressure and temperature were continuously measured in the equilibrators using a Honeywell ASCX Microstructure Pressure Sensor and an Omega Fast Response RTD, respectively. Equilibrated carrier gas, four standard gases of known mixing ratio (nominally 150, 450, 750, and 1500 ppm), and unaltered marine air were all plumbed to provide gas flow to the electronics box. The system is controlled using National Instruments LabVIEW software. The software controls data acquisition from the thermosalinograph, the pressure and temperature sensors, and the LI-COR; while also controlling Valco Instruments Co. Inc. (VICI) multi-port actuators that cycle between the gas streams plumbed to the electronics box. None of the gas streams were dried prior to analysis, and all measurements were made at 1 Hz. The prescribed measurement scheme controlled by the software was to supply equilibrated carrier gas from the equilibrator to the LI-COR continuously for 720 minutes, then cycle the actuators to consecutively allow for the standard gas streams and unaltered marine air to be measured for 90 s each at 100 ml min-1 before returning to sample the carrier gas equilibrated with seawater xCO2. From each sequence of standard gas measurements, the final 20 s of data in the 80 s interval before the actuator changed position were used to construct calibration functions that were then interpolated in time between standard gas sequences. These functions were then used to calibrate the xCO2 measurements of seawater equilibrated carrier gas. Corrected seawater xCO2 was subsequently adjusted for under- or over-pressurization in the equilibrator using the ratio of equilibrator to vented LI-COR cell pressure, and then converted to pCO2 using atmospheric pressure measured by the LI-COR. The 1 Hz seawater pCO2, temperature and salinity data were quality controlled by removing questionable measurements, and then averaged in 5-min interval bins. Finally, pCO2 at the equilibrator temperature was adjusted to sea surface temperature using the average temperature difference measured between the seawater intake and the equilibrator (see Change Log note). Uncertainty in SWpCO2@SST was computed by adding the component uncertainties in quadrature: LI840A calibration uncertainty (0.5 ppm, by comparison with WMO traceable standard from ESRL), equilibrator temperature uncertainty (0.164 degrees C, by comparison between RTD probe and the TSG temperature), equilibrator pressure uncertainty (2 hPa), and uncertainty in the warming correction (0.15 degrees C, 1 standard deviation of the average difference between intake and TSG temperatures). Computed at a pCO2 of 400 uatm, this equates to sqrt(0.5^2 + 2.76^2 + 0.79^2 + 2.513^2) = 3.98 µatm.; Equilibrator type: non-dispersive infrared gas analyzer; Standardization technique: xCO2 calibration functions developed during periodic sequential analysis of gas standards of known concentration (nominally 150, 450, 750, and 1500); Standardization frequency: Every 720 minutes; Standard gas manufacturer: Praxair, Inc.; Standard gas uncertainty: 2 ppm for calibrated xCO2; ~2 µatm for pCO2; Uncertainty: 2 µatm; Quality flag convention: no quality flag applied; Method reference: Hales, B., D. Chipman, and T. Takahashi (2004), High-frequency measurements of partial pressure and total concentration of carbon dioxide in seawater using microporous hydrophobic membrane contactors, Limnology and Oceanography: Methods, 2, 356-364; Pierrot, D., C. Neill, K. Sullivan, R. Castle, R. Wanninkhof, H. Lüger, T. Johannessen, A. Olsen, R. A. Feely, and C. E. Cosca (2009), Recommendations for autonomous underway pCO2 measuring systems and data-reduction routines, Deep Sea Research Part II: Topical Studies in Oceanography, 56(8-10), 512-522, https://doi.org/10.1016/j.dsr2.2008.12.005; Evans, W., Mathis, J.T., Ramsay, J., and Hetrick, J. (2015). On the Frontline: Tracking Ocean Acidification in an Alaskan Shellfish Hatchery. PLoS One 10, e0130384; Evans, W., Pocock, K., Hare, A., Weekes, C., Hales, B., Jackson, J., Gurney-Smith, H., Mathis, J.T., Alin, S.R., and Feely, R.A. (2019). Marine CO2 Patterns in the Northern Salish Sea. Frontiers in Marine Science 5, https://doi.org/10.3389/fmars.2018.00536; Researcher name: Wiley Evans; Researcher institution: Hakai Institute Parameter or Variable: Sea surface temperature; Abbreviation: SST; Unit: °C, ITS-90 scale; Observation type: Measurements from continuously flowing seawater stream; Measured or calculated: calculated as the measured seawater temperature within the laboratory as determined by the TSG adjusted to sea surface temperature using the average difference in temperature between the TSG and the intake temperature records; Analyzing instrument: Sea-Bird SBE 45 MicroTSG Thermosalinograph; Detailed sampling and analyzing information: 1 Hz data captured using National Instruments LabVIEW software on an iMac computer; Uncertainty: 0.002°C; Researcher name: Wiley Evans; Researcher institution: Hakai Institute Parameter or Variable: Sea surface salinity; Abbreviation: Salinity; Unit: 1978 Practical Salinity Scale; Observation type: measurements from continuously flowing seawater stream; Calculation method and parameters: calculated from conductivity and temperature measurements; Analyzing instrument: SBE 45 MicroTSG Thermosalinograph; Detailed sampling and analyzing information: 1 Hz data captured using National Instruments LabVIEW software on an iMac computer; Uncertainty: 0.003 S/m; Researcher name: Wiley Evans; Researcher institution: Hakai Institute 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. Non-dispersive infrared (NDIR) dissolved inorganic carbon (DIC) analyzer Non-dispersive infrared (NDIR) dissolved inorganic carbon (DIC) analyzer 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 with a non-dispersive infrared (NDIR) carbon dioxide analyzer. 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 UNKNOWN PLATFORMS OF CANADA UNKNOWN PLATFORMS OF CANADA