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Dataset Overview | National Centers for Environmental Information (NCEI)

Fugacity of carbon dioxide (fCO2), water temperature, salinity and other variables collected from surface underway observations during R/V Thomas G. Thompson cruises TN366, TN367 and TN374 (EXPOCODEs 325020190403, 325020190520, 325020191211) in the Atlantic and Southern Oceans from 2019-04-03 to 2020-01-04 (NCEI Accession 0208761)

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This dataset consists of surface underway ocean measurements of Fugacity of carbon dioxide (fCO2), water temperature, salinity and other variables collected from surface underway observations during R/V Thomas G. Thompson cruises TN366, TN367 and TN374 (EXPOCODEs 325020190403, 325020190520, 325020191211) in the Atlantic and Southern Oceans from 2019-04-03 to 2020-01-04. These measurements were collected with support from NOAA's Climate Program Office (CPO).
  • Cite as: Alin, Simone R.; Collins, Andrew; Feely, Richard A.; Cosca, Catherine E. (2020). Fugacity of carbon dioxide (fCO2), water temperature, salinity and other variables collected from surface underway observations during R/V Thomas G. Thompson cruises TN366, TN367 and TN374 (EXPOCODEs 325020190403, 325020190520, 325020191211) in the Atlantic and Southern Oceans from 2019-04-03 to 2020-01-04 (NCEI Accession 0208761). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/015m-ak70. Accessed [date].
gov.noaa.nodc:0208761
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Distribution Formats
  • Originator data format
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Distributor NOAA National Centers for Environmental Information
+1-301-713-3277
NCEI.Info@noaa.gov
Dataset Point of Contact NOAA National Centers for Environmental Information
ncei.info@noaa.gov
Time Period 2019-04-03 to 2020-01-04
Spatial Bounding Box Coordinates
West: -70.053
East: 31.517
South: -68.385
North: 40.54
Spatial Coverage Map
General Documentation
Associated Resources
  • Pierrot, D., Neill, C., Sullivan, K., Castle, R., Wanninkhof, R., Lüger, H., Johannessen, T., Olsen, A., Feely, R. A., & Cosca, C. E. (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
  • Feely, R.A., R. Wanninkhof, H.B. Milburn, C.E. Cosca, M. Stapp, and P.P. Murphy, A new automated underway system for making high precision pCO2 measurements onboard research ships, Analytica Chim. Acta, 377, 185-191, https://doi.org/10.1016/S0003-2670(98)00388-2, 1998.
  • Wanninkhof, R., & Thoning, K. (1993). Measurement of fugacity of CO2 in surface water using continuous and discrete sampling methods. Marine Chemistry, 44(2–4), 189–204. https://doi.org/10.1016/0304-4203(93)90202-y
  • Ships Of Opportunity Program (SOOP) Data
  • 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
Publication Dates
  • publication: 2020-02-03
  • revision: 2022-12-02
Data Presentation Form Digital table - digital representation of facts or figures systematically displayed, especially in columns
Dataset Progress Status Complete - production of the data has been completed
Historical archive - data has been stored in an offline storage facility
Data Update Frequency As needed
Supplemental Information
In this accession, NCEI has archived multiple versions of these data. The latest (and best) version of these data has the largest version number.
Purpose The major objectives of the project were to continue a time series documenting the distribution of surface and atmospheric fCO2, salinity, temperature, and other parameters in the Atlantic Ocean.
Use Limitations
  • accessLevel: Public
  • 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.
Dataset Citation
  • Cite as: Alin, Simone R.; Collins, Andrew; Feely, Richard A.; Cosca, Catherine E. (2020). Fugacity of carbon dioxide (fCO2), water temperature, salinity and other variables collected from surface underway observations during R/V Thomas G. Thompson cruises TN366, TN367 and TN374 (EXPOCODEs 325020190403, 325020190520, 325020191211) in the Atlantic and Southern Oceans from 2019-04-03 to 2020-01-04 (NCEI Accession 0208761). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/015m-ak70. Accessed [date].
Cited Authors
Principal Investigators
Contributors
Resource Providers
Publishers
Acknowledgments
  • Funding Information: NOAA Ocean Acidification Program (PMEL Sustained OA Data Management (PDM), 20845)
  • Funding Information: NOAA Ocean Acidification Program (Sustained Investment Coastal Underway Ocean Acidification Observations (Alin PMEL), 17908)
  • Funding Information: NOAA Climate Program Office Ocean Observing and Monitoring Division (CPO/OOMD) (Surface water pCO2 measurements from ships)
Theme keywords NODC DATA TYPES THESAURUS NODC OBSERVATION TYPES THESAURUS WMO_CategoryCode
  • oceanography
Global Change Master Directory (GCMD) Science Keywords OCADS Study Type
  • Surface underway
Provider Variable Abbreviations
  • SAL_PSU
  • SST_C
  • fCO2_SW@SST_uatm, dfCO2_uatm
Data Center keywords NODC COLLECTING INSTITUTION NAMES THESAURUS NODC SUBMITTING INSTITUTION NAMES THESAURUS Global Change Master Directory (GCMD) Data Center Keywords
Platform keywords NODC PLATFORM NAMES THESAURUS ICES/SeaDataNet Ship Codes
Instrument keywords NODC INSTRUMENT TYPES THESAURUS Global Change Master Directory (GCMD) Instrument Keywords
Place keywords NODC SEA AREA NAMES THESAURUS Global Change Master Directory (GCMD) Location Keywords Provider Geographic Names
  • North Atlantic Ocean
  • South Atlantic Ocean
  • Southern Ocean
Project keywords NODC PROJECT NAMES THESAURUS Cruise ID
  • TN366
  • TN367
  • TN374
EXPOCODE
  • 325020190403
  • 325020190520
  • 325020191211
Ocean Acidification Search Keywords
  • Ocean Acidification Program (OAP)
  • Ocean Carbon and Acidification Data System (OCADS) Project
Reference Section ID
  • SOOP
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Alin, Simone R.; Collins, Andrew; Feely, Richard A.; Cosca, Catherine E. (2020). Fugacity of carbon dioxide (fCO2), water temperature, salinity and other variables collected from surface underway observations during R/V Thomas G. Thompson cruises TN366, TN367 and TN374 (EXPOCODEs 325020190403, 325020190520, 325020191211) in the Atlantic and Southern Oceans from 2019-04-03 to 2020-01-04 (NCEI Accession 0208761). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/015m-ak70. Accessed [date].
Access Constraints
  • 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.
Fees
  • 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.
Lineage information for: dataset
Processing Steps
  • 2020-02-03T21:37:10Z - NCEI Accession 0208761 v1.1 was published.
  • 2022-12-02T22:35:13Z - NCEI Accession 0208761 was revised and v2.2 was published.
    Rationale: 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.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Parameter or Variable: pCO2 (fCO2) autonomous; Abbreviation: fCO2_SW@SST_uatm, dfCO2_uatm; Unit: uatm; Observation type: Surface underway; Measured or calculated: Measured; Calculation method and parameters: Fugacity of CO2 is obtained by correcting the partial pressure of CO2 (pCO2) for non-ideality of the gas with respect to molecular interactions between CO2 and other gases in air. See Pierrot et al. for details on how the correction is made.; Sampling instrument: Seawater pump; Location of seawater intake: Bow; Analyzing instrument: General Oceanics 8050. PMEL system ID: C12/15034/157; Detailed sampling and analyzing information: The sampling and analyzing methods of the Neill/General Oceanics Underway pCO2 systems are described in detail in: 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 Res. II, 56(8-10), 512-522, https://doi.org/10.1016/j.dsr2.2008.12.005.; Equilibrator type: Shower head; Equilibrator volume: ~0.5 L; Is the equilibrator vented or not: Vented; Water flow rate: 3 L/min; Gas flow rate: ~0.8 L/m; How was temperature inside the equilibrator measured: Hart Scientific model 1523 digital thermometer, serial number A71212, with an NIST traceable model 5610 thermistor probe, serial number B2C0403. Accurate to ± 0.01°C.; How was pressure inside the equilibrator measured: Setra 239 differential pressure transducer, accurate to ± 0.15 hPa. The equilibrator was passively vented to a secondary equilibrator, and the Licor sample output was vented to the laboratory when CO2 measurements were made, thus equilibrator headspace pressure was assumed to be laboratory pressure.; Drying method for gas: From Pierrot et al.: Sample air is dried in a condenser that is cooled to 4-5 °C by a Peltier thermoelectric device. This partially dried air flushes a chamber that is vented and remains at ambient pressure. The dried air inside the chamber is used as the counter flow in the Nafion tubing. A vacuum pump pulls the dried air from the chamber first through a fixed restrictor and then through the Nafion tubes, thus creating an absolute pressure and corresponding partial pressure gradient for water vapor across the membrane. When atmospheric air is measured, some of the partially dried air (80-100 ml/min) is pushed through a Nafion tube, the analyzer and out a vent instead of flushing the chamber. The headspace gas, when being measured, is circulated in a closed loop through the analyzer at a rate similar to that of the atmospheric air (80-100 ml/min). It is dried first in the condenser, then in a Nafion tube prior to entering the analyzer and being returned to the equilibrator. Typically, the water mole fraction (xH2O) in the dried gas is about 2 parts per thousand (ppt), which corresponds to a dew point temperature of about -20 °C. The liquid water condensed out of the sample air streams is removed by peristaltic pumps into the vent equilibrator at intervals determined by the user.; SEA CO2 gas detector manufacturer: Licor, Inc; SEA CO2 gas detector model: Licor 7000, IRG4-0583; SEA CO2 gas detector resolution: 0.2 µatm; SEA CO2 gas detector uncertainty: 0.3 µatm for equilibrator measurements, 0.2 µatm for atmospheric measurements; Standardization technique: The system runs a full cycle in approximately six hours. The cycle starts with four standard gases composed of a known quantity of CO2 in air, a gas composed of 100% ultra-high purity nitrogen, then measures six atmopheric samples followed by 60 surface water samples. The gas detector runs a zero and span routine twice daily, using the nitrogen and highest CO2 gas standard, respectively.; Standardization frequency: Every three hours; Standard gas manufacturer: Standard gases are supplied by NOAA's Earth System Research Laboratory, Global Monitoring Division, in Boulder, CO, and are directly traceable to the WMO scale.; Standard gas concentration: LL122869 = 304.26 ppm CO2, LL122858 = 493.83 ppm CO2, LL122359 = 639.36 ppm CO2, LL63969 = 872.6 ppm CO2; Standard gas uncertainty: 0.01 ppm; Water vapor correction method: Details of the data reduction are described in Pierrot, et.al. (2009).; Temperature correction method: Details of the data reduction are described in Pierrot, et.al. (2009).; At what temperature was pCO2 reported: In situ sea surface temperature; Uncertainty: ± 0.01°C; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value; Method reference: Pierrot, D., Neill, C., Sullivan, K., Castle, R., Wanninkhof, R., Lüger, H., Johannessen, T., Olsen, A., Feely, R. A., & Cosca, C. E. (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; Researcher name: Collins, A.U.; Researcher institution: Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration.
  • Parameter or Variable: Sea Surface Temperature; Abbreviation: SST_C; Unit: Degrees Celsius; Observation type: Surface Underway; Sampling instrument: In-situ observation; Analyzing instrument: Seabird Electronics 45, maintained and calibrated yearly by ship personnel; Uncertainty: 0.0025°C.
  • Parameter or Variable: Sea Surface Salinity; Abbreviation: SAL_PSU; Unit: PSU; Observation type: Surface Underway; Sampling instrument: Seabird Electronics 45, maintained and calibrated yearly by ship personnel; Uncertainty: 0.005 PSU .
Acquisition Information (collection)
Instrument
  • barometric pressure sensor
  • carbon dioxide (CO2) gas analyzer
  • salinometer
  • showerhead equilibrator
  • temperature sensor
Platform
  • R/V THOMAS G. THOMPSON
Last Modified: 2024-07-13T21:46:00Z
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