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Dataset_ID: CLIVAR_A16S_2005
Investigator(s) Name: Wanninkhof, Rik
Organization: NOAA/AOML
Address: 4301 Rickenbacker CausewayMiami, FL 33149
Phone: 1-305-361-4379
Email: Rik.Wanninkhof@noaa.gov

Name: Millero, Frank J.
Organization: RSMAS/MAC
Address: University of Miami,4600 Rickenbacker Causeway,Miami, FL 33149
Phone: 1-305-361-4707
Email: fmillero@rsmas.miami.edu

Name: Feely, Richard A.
Organization: NOAA/PMEL
Address: 7600 Sand Point Way NE,Seattle, WA 98115
Phone: 1(206) 526-6214
Email: Richard.A.Feely@noaa.gov
Dataset Info:Dataset ID:CLIVAR_A16S_2005
Submission Dates: Initial Submission: 20050320
Revised Submission: 20051208
Cruise Info:
  • Experiment:
    1. Experiment Name: CLIVAR/CO2 repeat hydrography, CARINA
Cruise:
  • Cruise ID: 33RO20050111
  • Section: CLIVAR A16S
  • Geographical Coverage:
    1. Geographical Region: Atlantic Ocean
Bounds:
NorthWestSouthEast
-2.33-36.38-60.02-24.99


Temporal Coverage: Start Date: 20050111 End Date: 20050224
Vessel:Vessel Name:Ronald H. Brown
Vessel ID:33RO
Country:USA
Vessel Owner:Department of Commerce's NOAA
Data Center URL: http://cdiac.esd.ornl.gov/
Download Data Sets: CLIVAR/CARINA A16S_2005 data
DIC analysis performed by Esa Peltola and Robert Castle, AOMLpCO2discrete analysis performed by Rik wanninkhof, AOMLDIC data reduction and QC performed by Esa Peltola, AOMLpCO2 data reduction and QC performed by Robert Castle and Rik Wanninkhof, AOML pCO2 analyses were done part-time
Variable Info: downup
Variable NameDescription of Variable
CTD temperatureDeg.C
CTD salinity
CTD oxygenumol/kg
Bottle salinity
Bottle oxygenumol/kg
Nutrientsumol/kg
CFC11, CFC12, CFC113pmol/kg
TCO2umol/kg
TALKumol/kg
pH@20 Deg.C
pCO2uatm @20deg.C
Method Description:
  • Total C02 Data:
    1. TCO2 Analysis Method: The analysis was done by coulometry with two analytical systems (AOML-1 and AOML-2) used simultaneously on the cruise. Each system consisted of a coulometer (UIC, Inc.) coupled with a SOMMA (Single Operator Multiparameter Metabolic Analyzer).
    2. Standardization Technique:
      1. Technique Description: gas loops and CRM's
      2. Sample Volume: 550mL water samples were used with 28.7 (AOML-1)and 22.6 ml (AOML-2) pipette volumes
      3. CRM Info:
        1. Correction Magnitude: Performed on a per cell basis. The average correction was 3.1+/- 2.2 umol/kg (n=60) for AOMl-1 and 1.3+/- 2.9 umol/kg (n=60) for AOML-2 based on the first CRM analysis. Since the correction was done on a per cell basis the values have little significance other than to indicate instrument stability
        2. Batch Number: #66
        3. CRM Analysis Info: CRM_Dickson_#66 SIO assigned value = 1969.57 umol/kg Run CRM beginning, middle, and end of each cell
    3. Field Replicate Info: 180 duplicates out of 2482 samples taken during cruise
    4. Poisoning Info: A multiplicative factor of 1.0037 0.2 mL saturated HgCl2 solution
      1. Poisoning Correction Description: A multiplicative factor of 1.0037
      2. Poison Volume: 0.2 mL saturated HgCl2 solution
    5. Accuracy Info: The average difference of 176 replicates run on the same cell was -0.3 umol/kg with a standard deviation of 2.00 umol/kg. These includes back-to back samples and those run at the beginning and end of cell.
    6. Method References: Johnson et al., 1985,1987,1993; Johnson, 1992, DOE handbook (Dickson and Goyet ed., 1994).
    7. Citations:
  • Alkalinity:
    1. Curve Fitting Method: The titration system used consists of a Metrohm 665 Dosimat titrator, an Orion 720A pH meter and a custom designed plastic water-jacketed titration cell (Millero et al., 1993b).
    2. Type of Titration:
    3. Description of Other Titration:
    4. Cell Type: Closed
    5. CRM cale: Dickson
    6. Sample Volume: 500 mL
    7. Magnitude of Blank Correction:
    8. Accuracy Info: Standard deviation: Instr. 1: ±3.5 µmol·kg-1; Instr. 2: ±2.7 µmol·kg-1Standard deviation: Duplicates, between systems: ±2.9 µmol·kg-1; Instr. 1: ±1.6 µmol·kg-1; Instr. 2: ±1.3 µmol.kg-1
    9. Method References: Millero, F.J., J.-Z. Zhang, K, Lee, and D.M. Campbell, 1993b: Titration alkalinity of seawater. Mar. Chem., v. 44, pp. 153-165.
    10. Citations:
  • pCO2 Data:
    1. Analysis:
      1. pCO2 Analysis Method: Headspace analysis using a LICOR infrared analyzer
      2. Sample Volume: 500 mL in a volumetric flask
      3. Headspace_Volume: 120 mL
      4. Measurement_Temperature: 20deg.C
      5. Temperature Normalization: 20deg.C
      6. Temperature Correction Method: waterbath was always within 0.03 C from 20 C. The small correction to 20 C was done by dpCO2/dt = 0.0423
      7. Variable Reported: fCO2
      8. Gas: moist air
      9. Standard Gas Concentrations: 378.71, 792.51, 1036.92, 1533.7, 593.64, and 205.07 ppm, A05984 - 1036.9 ppm, CA05940 - 1533.7 ppm, CA05988 - 593.6 ppm.
      10. Frequency of Standardization: All six standards were run after 8 water samples (2.5-3 hours)
    2. Field Replicate Info: 0.2+/- 0.2% or 2.3 +/- 1.5 ppm (n=90)
    3. Storage Method: Poisoned with 0.3 ml HgCl2 and stored upside down in coolers up to 12-hours
    4. Accuracy Info: Internal consistency calculations with DIC and TAlk showed TAlk-measured-Talk(DIC,fCO2) of -2 and a st dev of 4.1 umol/kg (n=768). If error is distributed evely between all parameters the fCO2 accuracy would be about 3 uatm.
    5. Method References: Wanninkhof and Thoning (1993)
  • pH Data:
    1. pH Scale: Sea Water Scale (SWS)
    2. pH Analysis Method: Measurements of the pH of seawater on the total hydrogen ion concentration pH scale (pHt) were made using the multi-wavelength spectrophotometric techniques of Clayton and Byrne (1993).
    3. Calibration Info:
      1. Calibration Description: NA
      2. In Situ Temperature: NA
      3. Temperature of Analysis: 25C
      4. Temperature Normalization: NA
      5. In Situ Pressure: Atm.
    4. Accuracy Info: A precision of better than 0.001.Batch #59: pHsws @ 25C 7.9048 +/- 0.0007 (n = 19)
    5. Method References: Clayton, T.D., and R.H. Byrne, 1993: Spectrophotometric seawater pH measurements: Total hydrogen ion concentration scale calibration of m-cresol purple and at-sea results. Deep-Sea Res., v. 40, pp. 2315-2329.
Method References:
Data Set References: Wanninkhof, R., S.C. Doney, E. Peltola , R.D. Castle, F.J. Millero, J.L. Bullister, D.A. Hansell, M.J. Warner, C. Langdon, G.C. Johnson, and C.W. Mordy. 2006. Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Ronald H. Brown Repeat Hydrography Cruise in the Atlantic Ocean: CLIVAR CO2 Section A16S_2005 (11 January - 24 February, 2005), ed. A. Kozyr. ORNL/CDIAC-151, NDP-087. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tennessee, 38 pp.
Citation: Wanninkhof, R., S.C. Doney, E. Peltola , R.D. Castle, F.J. Millero, J.L. Bullister, D.A. Hansell, M.J. Warner, C. Langdon, G.C. Johnson, and C.W. Mordy. 2006. Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Ronald H. Brown Repeat Hydrography Cruise in the Atlantic Ocean: CLIVAR CO2 Section A16S_2005 (11 January - 24 February, 2005), ed. A. Kozyr. ORNL/CDIAC-151, NDP-087. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, Oak Ridge, Tennessee, 38 pp. doi: 10.3334/CDIAC/otg.ndp087
Measurement Type: discrete measurement discrete data discrete measurements bottle measurement bottle data bottle measurements
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