OCEAN CDIAC's Ocean CO2 Data Program
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Search Criteria: dataset_idText : WOCE_A17 AND ( datasource :( oceanbt ) )


Dataset_ID: WOCE_A17
Investigator(s) Name: Wallace, Douglas
Organization: Forschungsbereich Marine Biogeochemie
Address: Institut fur Meereskunde,an der Universitat Kiel,Dusternbrooker Weg 20,D-24105 Kiel,GERMANY
Phone: +49-431-600-4200
Email: dwallace@ifm.uni-kiel.de

Name: Rios, Aida F.
Organization: Departamento de Oceanograffa
Address: Instituto de Investigaciones Marinas.CSIC,c/Eduardo Cabello, 6,36208 Vigo, Spain
Phone: 34-986-231930 (Ext. 371)
Email: aida@iim.csic.es

Name: Johnson, Kenneth
Organization: BNL (retired)
Address:
Phone:
Email: johnson_k37@hotmail.com
Dataset Info:Dataset ID:WOCE_A17
Submission Dates: Initial Submission: 20040611
Revised Submission: 20040611
Cruise Info:
  • Experiment:
    1. Experiment Name: WOCE
Cruise:
  • Cruise ID: 3230CITHER2_1-2
  • Section: WOCE_A17
  • Geographical Coverage:
    1. Geographical Region: Atlantic Ocean
Bounds:
NorthWestSouthEast
-14.3-58.8-52.6-29.5


Temporal Coverage: Start Date: 19940108 End Date: 19940210
Vessel:Vessel Name:R/V Maurice Ewing
Vessel ID:3230
Country:U.S.A.
Vessel Owner:Columbia University
Data Center URL: http://cdiac.esd.ornl.gov/
Download Data Sets: Descrete measurements from WOCE A17C Section

Variable Info: downup
Variable NameDescription of Variable
CTD PressureDBAR
CTD Temperature
CTD Salinity
Bottle Salinity
CTD OxygenUMOL/KG
Bottle OxygenUMOL/KG
SilicateUMOL/KG
Nitrate
PhosphateUMOL/KG
CFC-11PMOL/KG
CFC-12PMOL/KG
TCO2UMOL/KG
TALKUMOL/KG
pH
Method Description:
  • Total C02 Data:
    1. TCO2 Analysis Method: TCO2 was determined using an automated SOMMA dynamic headspace sample processor (S/N 007) with coulometric detection of the CO2 extracted from acidified samples. A description of the SOMMA-coulometry system and its calibration can be found in Johnson et al. 1987; Johnson and Wallace 1992; and Johnson et al. 1993.
    2. Standardization Technique:
      1. Technique Description:
      2. Sample Volume: 300
      3. CRM Info:
        1. Correction Magnitude:
        2. Batch Number: batch 18 were S = 35.298 and TCO2 = 2115.15 µmol/kg
        3. CRM Analysis Info: The overall accuracy of the CRM analyses was better than 1 µmol/kg on system 007 for the A17 section. The precision of the CRM determination is the standard deviation of the differences between the measured and certified CRM TCO2 (±1.64 µmol/kg, N = 163).
    3. Field Replicate Info: The mean ship-to-shore analytical difference (ship − shore) and the standard deviation of the differences was −0.09 ± 1.50 µmol/kg (N = 21)
    4. Poisoning Info: poisoned with 100 uL of a 100% saturated solution of HgCl2 100
      1. Poisoning Correction Description: poisoned with 100 uL of a 100% saturated solution of HgCl2
      2. Poison Volume: 100
    5. Accuracy Info: ±0.73 µmol/kg
    6. Method References: Johnson, K. M., A. E. King, and J. McN. Sieburth. 1985. Coulometric TCO2 analyses for marine studies: An introduction. Marine Chemistry 16:61-82.Johnson, K. M., J. McN. Sieburth, P. J. LeB. Williams, and L. Braendstroem. 1987. Coulometric TCO2 analysis for marine studies: Automation and calibration. Marine Chemistry 21:117-33.Johnson, K. M., and D.W.R. Wallace. 1992. The single-operator multiparameter metabolic analyzer for total carbon dioxide with coulometric detection. DOE Research Summary no. 19. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, Oak Ridge, Tenn.Johnson, K. M., K. D. Wills, D. B. Butler, W. K. Johnson, and C. S. Wong. 1993. Coulometric total carbon dioxide analysis for marine studies: Maximizing the performance of an automated gas extraction system and coulometric detector. Marine Chemistry 44:167-87.
    7. Citations:
  • Alkalinity:
    1. Curve Fitting Method: TALK was determined with a Titrino Metrohm automatic potentiometric titrator using separate glass working and reference electrodes. Potentiometric titrations were carried out in a covered but not completely closed (headspace present) titration flask to a final pH of 4.4 as described by Perez and Fraga (1987a).
    2. Type of Titration:
    3. Description of Other Titration:
    4. Cell Type: Closed
    5. CRM cale: Dickson
    6. Sample Volume: 300
    7. Magnitude of Blank Correction:
    8. Accuracy Info: The precision of the method was assessed from 59 pairs of samples taken from two rosette sampling bottles closed at the same depth. The mean difference or precision of the TALK determination was 1.2 ± 1.1 µmol/kg, or approximately 0.1%.
    9. Method References: Perez, F. F., and F. Fraga. 1987b. A precise and rapid analytical procedure for alkalinity determination. Marine Chemistry 21:169-82.
    10. Citations:
  • pCO2 Data:
    1. Analysis:
      1. pCO2 Analysis Method:
      2. Sample Volume:
      3. Headspace_Volume:
      4. Measurement_Temperature:
      5. Temperature Normalization:
      6. Temperature Correction Method:
      7. Variable Reported:
      8. Gas:
      9. Standard Gas Concentrations:
      10. Frequency of Standardization:
    2. Field Replicate Info:
    3. Storage Method:
    4. Accuracy Info:
    5. Method References:
  • pH Data:
    1. pH Scale: No info.
    2. pH Analysis Method: For pH measurements, a Metrohm 654 pH meter with a Metrohm 6.0233.100 combination glass electrode was used.
    3. Calibration Info:
      1. Calibration Description: Changes in electrode response were corrected in the same manner as for alkalinity using titration curves generated at the end of the cruise in seawater (S = 34.655) with HCl at 25.7°C. The resulting correction factor for pH was 0.026 ± 0.001, which was added to the pH analyses.
      2. In Situ Temperature: No info
      3. Temperature of Analysis: 25
      4. Temperature Normalization: The temperature measurement for each pH sample was done with a Pt-100 probe, and pH values were normalized to 15°C.
      5. In Situ Pressure: No info
    4. Accuracy Info: The precision of the determination was 0.002 ± 0.003.
    5. Method References: Perez, F. F., and F. Fraga. 1987a. The pH measurements in seawater on NBS scale. Marine Chemistry 21:315-27.
Method References:
Data Set References: Rios, A., K. M. Johnson, X. A. Alvarez-Salgado, L. Arlen, A. Billant, L. S. Bingler, P. Branellec, C. G. Castro, D. W. Chipman, G. Roson, and D. W. R. Wallace,. 2005. Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Maurice Ewing Cruise in the Atlantic Ocean (WOCE Section A17, 4 January21 - March 1994), ed. A. Kozyr. ORNL/CDIAC-148, NDP-084. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tennessee.
Citation: Rios, A., K. M. Johnson, X. A. Alvarez-Salgado, L. Arlen, A. Billant, L. S. Bingler, P. Branellec, C. G. Castro, D. W. Chipman, G. Roson, and D. W. R. Wallace,. 2005. Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Maurice Ewing Cruise in the Atlantic Ocean (WOCE Section A17, 4 January21 - March 1994), ed. A. Kozyr. ORNL/CDIAC-148, NDP-084. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tennessee. doi: 10.3334/CDIAC/otg.ndp084
Measurement Type: discrete measurement discrete data discrete measurements bottle measurement bottle data bottle measurements
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