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Dataset Overview | National Centers for Environmental Information (NCEI)

Partial pressure and fugacity of carbon dioxide (pCO2/fCO2), temperature, salinity and other variables collected from surface underway observations using shower head equilibrator, carbon dioxide gas detector and other instruments during R/V Melville cruises MV1305 (EXPOCODE 318M20130321) and MV1306 (EXPOCODE 318M20130508) along the Global Ocean Ship-Based Hydrographic Investigations Program (GO-SHIP) Section P02 in the North Pacific Ocean from 2013-03-21 to 2013-06-01 (NCEI Accession 0200367)

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This dataset contains underway measurements of partial pressure and fugacity of carbon dioxide (pCO2/fCO2), sea surface salinity, sea surface temperature, and other parameters collected during R/V Melville cruises MV1305 (EXPOCODE 318M20130321) and MV1306 (EXPOCODE 318M20130508) along the Global Ocean Ship-Based Hydrographic Investigations Program (GO-SHIP) Section P02 in the North Pacific Ocean from 2013-03-21 to 2013-06-01. The cruises started in Yokohama, Japan and ended in San Diego, CA. This effort was conducted in support of the Global Ocean Ship-Based Hydrographic Investigations Program (GO-SHIP) and NOAA's Climate Program Office (CPO).
  • Cite as: Cosca, Catherine E.; Alin, Simone R.; Feely, Richard A.; Lebon, Geoffrey T. (2019). Partial pressure and fugacity of carbon dioxide (pCO2/fCO2), temperature, salinity and other variables collected from surface underway observations using shower head equilibrator, carbon dioxide gas detector and other instruments during R/V Melville cruises MV1305 (EXPOCODE 318M20130321) and MV1306 (EXPOCODE 318M20130508) along the Global Ocean Ship-Based Hydrographic Investigations Program (GO-SHIP) Section P02 in the North Pacific Ocean from 2013-03-21 to 2013-06-01 (NCEI Accession 0200367). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/w1t4-g438. Accessed [date].
gov.noaa.nodc:0200367
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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 2013-03-21 to 2013-06-01
Spatial Bounding Box Coordinates
West: 134.1
East: -121.2
South: 20.9
North: 30.05
Spatial Coverage Map
General Documentation
Associated Resources
Publication Dates
  • publication: 2019-08-23
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
Purpose The major objectives of the project were to and to continue a time series documenting the distribution of surface and atmospheric fCO2, salinity, temperature, and other parameters, and to characterize and map the key indicators of ocean acidification (OA) across the Pacific 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: Cosca, Catherine E.; Alin, Simone R.; Feely, Richard A.; Lebon, Geoffrey T. (2019). Partial pressure and fugacity of carbon dioxide (pCO2/fCO2), temperature, salinity and other variables collected from surface underway observations using shower head equilibrator, carbon dioxide gas detector and other instruments during R/V Melville cruises MV1305 (EXPOCODE 318M20130321) and MV1306 (EXPOCODE 318M20130508) along the Global Ocean Ship-Based Hydrographic Investigations Program (GO-SHIP) Section P02 in the North Pacific Ocean from 2013-03-21 to 2013-06-01 (NCEI Accession 0200367). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/w1t4-g438. Accessed [date].
Cited Authors
Principal Investigators
Contributors
Resource Providers
Publishers
Acknowledgments
  • Funding Information: NOAA's Climate Program Office and Ocean Acidification Program (Surface Water pCO2 Measurements from Ships; West Coast Ocean Acidification Monitoring Network: Ships of Opportunity)
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(TSG)_PERMIL
  • SST(TSG)_C
  • fCO2W@SST_uATM, pCO2W@SST_uATM
  • pCO2A_uatm, fCO2A_uatm
  • xCO2A_interpolated_ppm
  • xCO2A_ppm
  • xCO2W_ppm
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
  • Equatorial Pacific
  • Pacific Ocean
Project keywords NODC PROJECT NAMES THESAURUS Cruise ID
  • MV1305
  • MV1306
EXPOCODE
  • 318M20130321
  • 318M20130508
Ocean Acidification Search Keywords
  • Ocean Acidification Program (OAP)
  • Ocean Carbon and Acidification Data System (OCADS) Project
Keywords NCEI ACCESSION NUMBER
Use Constraints
  • Cite as: Cosca, Catherine E.; Alin, Simone R.; Feely, Richard A.; Lebon, Geoffrey T. (2019). Partial pressure and fugacity of carbon dioxide (pCO2/fCO2), temperature, salinity and other variables collected from surface underway observations using shower head equilibrator, carbon dioxide gas detector and other instruments during R/V Melville cruises MV1305 (EXPOCODE 318M20130321) and MV1306 (EXPOCODE 318M20130508) along the Global Ocean Ship-Based Hydrographic Investigations Program (GO-SHIP) Section P02 in the North Pacific Ocean from 2013-03-21 to 2013-06-01 (NCEI Accession 0200367). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://doi.org/10.25921/w1t4-g438. 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
  • 2019-08-23T20:53:19Z - NCEI Accession 0200367 v1.1 was published.
Output Datasets
Lineage information for: dataset
Processing Steps
  • Parameter or Variable: pCO2 (fCO2) autonomous; Abbreviation: fCO2W@SST_uATM, pCO2W@SST_uATM; Unit: uatm; Observation type: Surface underway; In-situ / Manipulation / Response variable: In-situ observation; 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: GO12; 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 1521 digital thermometer, serial number 132061, with an NIST traceable model 5610 thermistor probe, serial number B180905. 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 oC 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, IRG4-1045; SEA CO2 gas detector resolution: 0.2 uatm; SEA CO2 gas detector uncertainty: 0.3 uatm for equilibrator measurements; ATM CO2 gas detector manufacturer: Licor, Inc; ATM CO2 gas detector model: IRG4-0560; ATM CO2 gas detector resolution: 0.2 µatm; ATM 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 6 hours. The cycle starts with 4 standard gases, then measures two rounds of 6 atmopherice samples followed by 50 surface water samples. Each new gas is flushed through the Licor Analyzer for 3 minutes prior to a stop-flow measurement.; Standardization frequency: Every 6 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: LL70570, 248.49 ppm; LL81353, 347.20 ppm; LL55878, 405.96 ppm; LL108056, 506.20 ppm; 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; 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: Catherine E. Cosca; Researcher institution: Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration.
  • Parameter or Variable: Sea Surface Temperature; Abbreviation: SST(TSG)_C; Unit: Degree Celcius; Observation type: Surface Underway; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: Seabird 45, maintained and calibrated yearly by ship personnel; Uncertainty: 0.0025 degrees Celsius.
  • Parameter or Variable: Salinity; Abbreviation: SAL(TSG)_PERMIL; Unit: permil; Observation type: Surface Underway; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: Seabird 45, serial number 4539646-0143; Uncertainty: 0.005.
  • Parameter or Variable: Mole fraction of CO2 in the equilibrator headspace (dry) at equilibrator temperature; Abbreviation: xCO2W_ppm; Unit: ppm; Observation type: Surface Underway; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: Licor 7000, IRG4-1045; Uncertainty: 0.3 ppm; Method reference: See Pierrot et al. for details..
  • Parameter or Variable: Mole fraction of CO2 measured in dry outside air; Abbreviation: xCO2A_ppm; Unit: ppm; Observation type: Underway; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: Licor 7000, IRG4-1045; Uncertainty: 0.2 ppm; Method reference: See Pierrot et al. for details..
  • Parameter or Variable: Mole fraction of CO2 measured in dry outside air associated with each water analysis.; Abbreviation: xCO2A_interpolated_ppm; Unit: ppm; Observation type: Underway; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Calculation method and parameters: Values are interpolated between measurements of xCO2A_ppm; Sampling instrument: Licor 7000, IRG4-1045; Uncertainty: 0.2 ppm; Method reference: See Pierrot et al. for details..
  • Parameter or Variable: Partial pressure and fugacity of CO2 in air corresponding to the interpolated xCO2 (xCO2A_interpolated_ppm) at SST and 100% humidity; Abbreviation: pCO2A_uatm, fCO2A_uatm; Unit: µatm; Observation type: Surface Underway; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Calculation method and parameters: Values are interpolated between measurements of xCO2A_ppm; Sampling instrument: Licor 7000, IRG4-1045; Uncertainty: 0.2 µatm; Method reference: See Pierrot et al. for details. .
Acquisition Information (collection)
Instrument
  • carbon dioxide (CO2) gas analyzer
  • showerhead equilibrator
Platform
  • R/V Melville
Last Modified: 2024-04-26T14:03:06Z
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