Partial pressure (or fugacity) of carbon dioxide, pH on total scale, temperature, salinity and other variables collected from surface underway observations during the container ship Cap Blanche ship-of-opportunity (SOOP) cruises in the Pacific Ocean from 2016-10-19 to 2017-17-17 (NCEI Accession 0169600)


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            title:  Partial pressure (or fugacity) of carbon dioxide, pH on total scale, temperature, salinity and other variables collected from surface underway observations during the container ship Cap Blanche ship-of-opportunity (SOOP) cruises in the Pacific Ocean from 2016-10-19 to 2017-17-17 (NCEI Accession 0169600)
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        abstract:  This NCEI Accession consists of surface underway measurements of partial pressure (or fugacity) of carbon dioxide (seawater and atmospheric), ISFET-based pH (total scale), temperature, and salinity collected on 5 trans-Pacific sections during the container ship Cap Blanche ship-of-opportunity (SOOP) cruises in the Pacific Ocean from 2016-10-19 to 2017-17-17. Cruise names and EXPOCODEs: CB2016_10 (AG5W20161019), CB2017_01 (AG5W20170115), CB2017_03 (AG5W20170312), CB2017_05 (AG5W20170507), CB2017_11 (AG5W20171117). Since 1992, underway CO2 observations have been made between New Zealand and the U.S. West Coast. In 2010, ISFET-based pH measurements (total scale) were added to this equatorial Pacific SOOP-based time-series. All pH data, when available, are reported on the total scale and at SST. This effort was conducted with the support of NOAA's Ocean Observing and Monitoring Division in the Climate Program Office (CPO) and NOAA's Ocean Acidification Program (OAP).
        purpose:  The major objectives of the project were to and to continue a time series documenting the distribution of surface and atmospheric fCO2, pH, salinity, temperature, and other parameters, and to characterize and map the key indicators of ocean acidification (OA) across the Pacific Ocean.
        credit:  Funding Information: NOAA's Climate Program Office and Ocean Acidification Program (Surface Water pCO2 Measurements from Ships; West Coast Ocean Acidification Monitoring Network: Volunteer Observing Ships)
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                                    description:  published 2018-01-06T02:27:07Z
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                            role: (inapplicable)
            processStep:  (LE_ProcessStep)
                description:  NCEI Accession 0169600 was revised and v2.2 was published.
                rationale:  Updates were received for this data set. 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.
                dateTime:
                  DateTime:  2020-03-10T21:45:33Z
                output:  (LE_Source)
                    sourceCitation:  (CI_Citation)
                        title:  NCEI Accession 0169600 v2.2
                        date:  (CI_Date)
                            date: (inapplicable)
                            dateType:  (CI_DateTypeCode) publication
                        citedResponsibleParty:  (CI_ResponsibleParty)
                            individualName: (inapplicable)
                            contactInfo:  (CI_Contact)
                                onlineResource:  (CI_OnlineResource)
                                    linkage: https://accession.nodc.noaa.gov/0169600/2.2
                                    protocol:  HTTPS
                                    name:  NCEI Accession 0169600 v2.2
                                    description:  published 2020-03-10T21:45:33Z
                                    function:  (CI_OnLineFunctionCode) download
                            role: (inapplicable)
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    dataQualityInfo:  (DQ_DataQuality)
        scope:  (DQ_Scope)
            level:  (MD_ScopeCode) dataset
        lineage:  (LI_Lineage)
            processStep:  (LE_ProcessStep)
                description:  Parameter or Variable: ; pH ; Abbreviation: pH_TOT_INSITU ; pH scale: Total ; Observation type: ISFET-based pH measurement, surface underway ; Measured or calculated: Measured ; Calculation method and parameters: N/A ; Sampling instrument: Ship's underway seawater system ; Analyzing instrument: ISFET pH systems including Honeywell Durafet III pH electrode and Orion Chloride Ion Selective Electrode built in Todd Martz's laboratory at Scripps Institution of Oceanography. ; Temperature of pH measurement: In situ ; Detailed sampling and analyzing information: Please refer to the cited methods description file. ; Replicate information: N/A ; Standardization description: pH data were calibrated using surface bottle measurements collected via the underway analytical system and preserved with mercuric chloride for later analysis in the laboratory at NOAA/PMEL (specifically for dissolved inorganic carbon [DIC] and total alkalinity [TA]). ; Standardization frequency: Calibration samples were collected every 6-12 hours, typically resulting in ~30-60 samples per roughly two-week crossing. ; pH standard values: N/A ; Temperature of standardization: In situ (=SST) ; Temperature correction method: N/A ; At what temperature was pH reported: In situ (=SST) ; Uncertainty: Accuracy: 0.007; Short term precision (hours): 0.0005; Long term precision (weeks): 0.004 ; Quality flag convention: WOCE quality control flags are used: 2 = good value, 3 = questionable value, 4 = bad value ; Method reference: Martz, T. R., J. G. Connery, and K. S. Johnson (2010), Testing the Honeywell Durafet for seawater pH applications, Limnol. Oceanogr. Methods, 8, 172-184, https://doi.org/10.4319/lom.2010.8.172. ; Researcher name: Catherine E. Cosca ; Researcher institution: NOAA Pacific Marine Environmental Laboratory (NOAA/PMEL) and University of Washington Joint Institute for the Study of Atmosphere and Ocean ; pCO2 (fCO2) autonomous ; Abbreviation: fCO2W@SST ; Unit: uatm ; Observation type: Surface underway ; In-situ / Manipulation / Response variable: In-situ observation ; Measured or calculated: Measured ; Sampling instrument: Seawater pump ; Location of seawater intake: Bow ; Analyzing instrument: General Oceanics 8050. PMEL system ID: GO7 ; 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.; Neill, C.; Sullivan, K.; Castle, R.; Wanninkhof, R.; Luger, H.; Johannessen, T.; Olsen, A.; Feely, R.A.; and Cosca, C.E. (2009). Recommendations for autonomous underway pCO2 measuring systems and data-reduction routines. Deep-Sea Res., II, v. 56, pp. 512-522. ; 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 A77488, with an NIST traceable model 5610 thermistor probe, serial number A9B0916. 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. Pressure in the laboratory was measured with a GE Druck barometer, serial number 3013024, with an accuracy of ± 0.01 %fs. ; 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, IRG4-0560 ; SEA CO2 gas detector resolution: 0.2 µatm ; SEA CO2 gas detector uncertainty: 0.3 µatm for equilibrator measurements, 0.2 �atm for atmospheric measurements ; Standardization technique: The system runs a full cycle in approximately 7 hours. The cycle starts with 4 standard gases, then measures three rounds of 6 atmopherice samples followed by 50 surface water samples. Each new gas is flushed through the Licor Analyzer for 2 minutes prior to a stop-flow measurement. ; Standardization frequency: Every 7 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; LL55878, 405.96 ppm; LL122887, 496.84 ppm; LL154680, 867.21 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 ; Uncertainty: ± 2 µatm ; 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.; Luger, H.; Johannessen, T.; Olsen, A.; Feely, R.A.; and Cosca, C.E. (2009). Recommendations for autonomous underway pCO2 measuring systems and data-reduction routines. Deep-Sea Res., II, v. 56, pp. 512-522. ; Researcher name: Catherine E. Cosca ; Researcher institution: Pacific Marine Environmental Laboratory, National Oceanic and Atmospheric Administration ; 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 38, serial number 3848581-0383 ; Uncertainty: 0.0025°C ; 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 PSU ; 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, IRG4-0560 ; Analyzing instrument: ; Duration: ; Detailed sampling and analyzing information: See Pierrot et al. for details. ; Uncertainty: 0.3 ppm ; Mole fraction of CO2 measured in dry outside air ; Abbreviation: xCO2A_ppm ; Unit: ppm ; Observation type: Surface Underway ; In-situ / Manipulation / Response variable: In-situ observation ; Measured or calculated: Measured ; Sampling instrument: Licor 7000, IRG4-0560 ; Analyzing instrument: ; Duration: ; Detailed sampling and analyzing information: See Pierrot et al. for details. ; Uncertainty: 0.2 ppm ; Mole fraction of CO2 measured in dry outside air associated with each water analysis. ; Abbreviation: xCO2A_interpolated_ppm ; Unit: ppm ; 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, IRG4-0560 ; Analyzing instrument: ; Duration: ; Detailed sampling and analyzing information: See Pierrot et al. for details. ; Uncertainty: 0.2 ppm ; 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 xCO2_ATM_ppm ; Sampling instrument: Licor 7000, IRG4-0560 ; Analyzing instrument: ; Duration: ; Detailed sampling and analyzing information: See Pierrot et al. for details. ; Uncertainty: 0.2 µatm .
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    metadataMaintenance:  (MD_MaintenanceInformation)
        maintenanceAndUpdateFrequency:  (MD_MaintenanceFrequencyCode) asNeeded
        maintenanceNote:  Metadata are developed, maintained and distributed by NCEI. Updates are performed as needed to maintain currentness.
        maintenanceNote:  NCEI Accession 0169600 was revised and a new version of the archival package was published. Updates to existing archival packages may provide additional files or replace obsolete files. The latest 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. Please see journal.txt in the /about directory for additional details on changes made.
        contact:  (CI_ResponsibleParty)
            organisationName:  DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce
            role:  (CI_RoleCode) custodian
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    acquisitionInformation:  (MI_AcquisitionInformation)
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  Carbon dioxide (CO2) gas analyzer
            type:  Carbon dioxide (CO2) gas analyzer
            description:  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.
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  Shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement
            type:  Shower head chamber equilibrator for autonomous carbon dioxide (CO2) measurement
            description:  A carbon dioxide equilibrator is usually in the shape of a vertical tube, with a shower head on the top, some head space, a lot of beads to increase the surface exchange area between water and air, a water seal device at the bottom to allow water to overflow, but prevents air exchange between inside and outside. Carbon dioxide (CO2) equilibrator works together with carbon dioxide (CO2) gas analyzer (insttypes_id 183) 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.
        instrument:  (MI_Instrument)
            identifier:  (MD_Identifier)
                code:  thermosalinographs
            type:  thermosalinographs
            description:  The SBE 45 MicroTSG Thermosalinograph is an externally powered, high-accuracy instrument, designed for shipboard determination of sea surface (pumped-water) conductivity and temperature. Salinity and sound velocity can also be computed. The MicroTSG is constructed of plastic and titanium to ensure long life with minimum maintenance.
        platform:  (MI_Platform)
            identifier:  (MD_Identifier)
                code:  Cap Blanche
            description:  ICES request for the vessel Cap Blanche from ANTIGUA AND BARBUDA(AG). Name : Cap Blanche Country(s) : ANTIGUA AND BARBUDA(AG) (ISO Country Code) Platform Class : 32 Vessel of opportunity Call Sign : V2DV5 MMSI: 305347000 IMO : 9311775 Commissioned Date : 2006-07-20 Current Length : 222 Built : 2006-07-20 Previous Name (Notes): Fesco Baykal Notes : Container ship Information Sources: - http://www.marinetraffic.com/ais/details/ships/shipid:364284/mmsi:305347000/imo:9311775/vessel:CAP_BLANCHE - http://www.shipspotting.com/gallery/photo.php?lid=1677981 Confirmed by NOAA on 2015-09-28.
            instrument: (missing)