gov.noaa.nodc:0246099 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 2026-05-06T13:12:23Z 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 CO2 content from 2016-08 to 2019-05 from the OceansAlaska Shellfish Hatchery in Ketchikan, Alaska, USA (NCEI Accession 0246099) 2022-01-27 publication 2022-01-19 creation International DOI Foundation (IDF) 10.25921/kmam-ct93 NOAA National Centers for Environmental Information gov.noaa.nodc:0246099 NCEI Archive Management System 0246099 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 Wiley Evans Hakai Institute wiley.evans@hakai.org https://hakai.org/ HTTPS Hakai Institute website Institution web page information principalInvestigator Katie Pocock Hakai Institute https://hakai.org/ HTTPS Hakai Institute website Institution web page information principalInvestigator Carrie Weekes Hakai Institute https://hakai.org/ HTTPS Hakai Institute website Institution web page information 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 Natalie Monacci University of Alaska Fairbanks (UAF) nmonacci@alaska.edu https://www.uaf.edu/ HTTPS University of Alaska Fairbanks (UAF) website Institution web page information principalInvestigator Evans, Wiley Hakai Institute https://hakai.org/ HTTPS Hakai Institute website Institution web page information author Pocock, 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 Hales, Burke Oregon State University, College of Earth, Ocean, and Atmospheric Sciences (OSU-CEOAS) http://ceoas.oregonstate.edu/ HTTP Oregon State University, College of Earth, Ocean, and Atmospheric Sciences (OSU-CEOAS) website Institution web page information author Monacci, Natalie M. University of Alaska Fairbanks (UAF) https://www.uaf.edu/ HTTPS University of Alaska Fairbanks (UAF) 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 from the OceansAlaska Shellfish Hatchery in Ketchikan, Alaska from 2016-08-29 to 2019-05-16. The OceansAlaska Shellfish Hatchery in Ketchikan, is a floating barge that has been a site for high-resolution measurement of surface seawater CO2 content since August 2016. Measurements of in situ temperature, salinity, and CO2 partial pressure are made near-continuously from a seawater sample line with an intake depth of 4.3 m. The effort to collect these data is a collaboration between OceansAlaska, the UAF Ocean Acidification Research Center, Oregon State University, and the Hakai Institute with support from the Alaska Ocean Observing System and the Tula Foundation. This data contribution consists of measurements made between August 29, 2016 and May 16, 2019. This dataset is available to the public for a wide variety of uses including scientific research and analysis. Funding Information: Tula Foundation (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:0246099 Preview graphic PNG 0246099 NCEI ACCESSION NUMBER 2022-01-13 publication Partial pressure (or fugacity) of carbon dioxide - atmosphere SALINITY - SURFACE WATER WATER TEMPERATURE theme NODC DATA TYPES THESAURUS bubble type equilibrator for autonomous carbon dioxide (CO2) measurement carbon dioxide (CO2) gas analyzer salinometer temperature sensor instrument NODC INSTRUMENT TYPES THESAURUS chemical continuous 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 Surface Ocean CO2 Atlas (SOCAT) 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 189920160829 project EXPOCODE Ocean Carbon and Acidification Data System (OCADS) Project project Ocean Acidification Search Keywords Coastal project Reference Section ID EARTH SCIENCE > ATMOSPHERE > ATMOSPHERIC CHEMISTRY > CARBON AND HYDROCARBON COMPOUNDS > ATMOSPHERIC CARBON DIOXIDE > PARTIAL PRESSURE OF CARBON DIOXIDE EARTH SCIENCE > CLIMATE INDICATORS > ATMOSPHERIC/OCEAN INDICATORS > SURFACE SALINITY 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 Surface measurement Time series theme OCADS Study Type SST Salinity seawater pCO2 theme Provider Variable Abbreviations CO2 ANALYZERS > CO2 ANALYZERS EQUILIBRATORS 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 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 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 Gulf of Alaska Ketchikan North Pacific Ocean Southeast Alaska Coast place Provider Geographic Names accessLevel: Public otherRestrictions Cite as: Evans, Wiley; Pocock, Katie; Weekes, Carrie; Hales, Burke; Monacci, Natalie M. (2022). High-resolution record of surface seawater CO2 content from 2016-08 to 2019-05 from the OceansAlaska Shellfish Hatchery in Ketchikan, Alaska, USA (NCEI Accession 0246099). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/kmam-ct93. 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 -131.5954 -131.5954 55.315 55.315 2016-08-29 2019-05-16 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 16.996 https://www.ncei.noaa.gov/data/oceans/ncei/ocads/metadata/0246099.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/kmam-ct93 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/246099 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/246099 HTTPS Web browser HTTPS Navigate directly to the URL for data access and direct download. download ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0194/0246099/ 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 0246099 v1.1 was published. 2022-01-27T21:54:13Z NCEI Accession 0246099 v1.1 publication https://www.ncei.noaa.gov/archive/accession/0246099/1.1 HTTPS NCEI Accession 0246099 v1.1 published 2022-01-27T21:54:13Z download dataset Parameter or Variable: pCO2 (fCO2) autonomous; Abbreviation: seawater pCO2; Unit: µatm; Observation type: Measurements from continuously flowing seawater stream; Measured or calculated: Measured; Calculation method and parameters: Calculated from measured CO2 mole fractions (xCO2) and ambient atmospheric pressure; Sampling instrument: equilibrator; Location of seawater intake: Seawater drawn from 4.3-m (14 feet) depth to the OceansAlaska Shellfish Hatchery barge in Ketchikan; southeast Alaska; 55.3150°N, 131.5954°W; Depth of seawater intake: 4.3-m; Analyzing instrument: Dakunalytics, LLC Burke-o-Lator (BoL) pCO2/TCO2 analyzer with LI-COR LI-840A; 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 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). Seawater continuously flowed between 0.5 and 1 gpm first through a Sea-Bird SBE45 thermosalinograph and into a bubble-type equilibrator. Seawater supplied to the equilibrator enters the top of the equilibration chamber through a vertical tube before contacting a dispersion plate that diverts seawater radically. Carrier gas (marine air) is pumped into the bubble-type equilibrator from the BoL electronics box at ~200 ml min-1 and enters the equilibration chamber through drip garden hose tubing positioned around the seawater dispersion plate in order to maximize the bubble production and subsequent equilibration of the carrier gas in the chamber. 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 BoL 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 equilibrator using an Omega Pressure Sensor and Fast Response Resistance Temperature Detector (RTD), respectively. The RTD periodically stopped reporting data, so the thermosalinograph temperature is taken here to equal equilibrator temperature as these components were adjacent to each other and there was very close agreement between the RTD and the thermosalinograph. Equilibrated carrier gas, four standard gases of known mixing ratio (149.3, 451, and 752 ppm; Scott-Marin, Inc.), and unaltered marine air were all plumbed to provide gas flow to the BoL electronics box. The BoL is controlled using National Instruments LabVIEW software run on an iMac computer. 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 the four standard gas streams and unaltered marine air to be measured for 90 s 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 50 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-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, and then bin-averaged in 5-min interval bins. pCO2 at the equilibrator temperature was adjusted to sea surface temperature using the mean observed temperature difference between the Sea-Bird SBE45 thermosalinograph and a SAMI-Alk system deployed for a 3-week period (April 5-30, 2019) at the seawater intake.; Equilibrator type: non-dispersive infrared gas analyzer; Standardization technique: xCO2 calibration functions developed during periodic sequential analysis of gas standards of known concentration (149.3, 451, and 752 ppm; Praxair); 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., 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(536): 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; 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 bubble type equilibrator for autonomous carbon dioxide (CO2) measurement bubble type equilibrator for autonomous carbon dioxide (CO2) measurement This type of equilibrators are often used on buoys. Developed by Pacific Marine Environmental Laboratory and Monterey Bay Aquarium Research Institute, the h-shaped bubble equilibrator does not require a water pump to spray water from the top. see Takahashi 1961 for more information. 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. 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. UNKNOWN PLATFORMS OF CANADA UNKNOWN PLATFORMS OF CANADA