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Dataset_ID: CLIVAR_P14_2007
Investigator(s) Name: Murata, Akihiko
Organization: JAMSTEC
Address: Japan Ahency for Marine-Earth Science and Technology2-15, Natsushima, Yokosuka, 237-0061, japan
Phone: +81-46-867-9470
Email: akihiko.murata@jamstec.go.jp

Name: Fukasawa, Masao
Organization: JAMSTEC
Address: Japan Ahency for Marine-Earth Science and Technology2-15, Natsushima, Yokosuka, 237-0061, japan
Phone: +81-46-867-9470
Email: fksw@jamstec.go.jp

Name: Kawano, Takeshi
Organization: JAMSTEC
Address: Japan Ahency for Marine-Earth Science and Technology2-15, Natsushima, Yokosuka 237-0061, Japan
Phone: +81-468-67-9455
Email: kawanot@jamstec.go.jp
Dataset Info:Dataset ID:CLIVAR_P14_2007
Submission Dates: Initial Submission: 20090109
Revised Submission: 20090109
Cruise Info:
  • Experiment:
    1. Experiment Name: CLIVAR/CO2 REPEAT HYDROGRAPHY
Cruise:
  • Cruise ID: 49NZ20071008
  • Section: CLIVAR_P14_2007
  • Geographical Coverage:
    1. Geographical Region: Pacific Ocean
Bounds:
NorthWestSouthEast
60150-40-170


Temporal Coverage: Start Date: 20071008 End Date: 20071226
Vessel:Vessel Name:R/V Mirai
Vessel ID:49NZ
Country:Japan
Vessel Owner:JAMSTEC
Data Center URL: http://cdiac.esd.ornl.gov/
Download Data Sets: CLIVAR Repeat Section P14_2007

Variable Info: downup
Variable NameDescription of Variable
CTD temperatureDeg. C
CTD salinity
CTD oxygenumol/kg
salinity
oxygenumol/kg
nutrientsumol/kg
CFCspmol/kg
TCO2umol/kg
TALKumol/kg
pH
delC13/mille
delC14/mille
Method Description:
  • Total C02 Data:
    1. TCO2 Analysis Method: Measurements of CT were made with two total CO2 measuring systems (systems A and B; Nippon ANS, Inc.), which are slightly different from each other. The systems comprise of a seawater dispensing system, a CO2 extraction system and a coulometer (Model 5012, UIC Inc.).
    2. Standardization Technique:
      1. Technique Description:
      2. Sample Volume: 300mL
      3. CRM Info:
        1. Correction Magnitude: Based on the results of CRM measurements stated above, we re-calculated the calibration factors so thatmeasurements of seawater samples become traceable to the certified value of batch 69.
        2. Batch Number: 80=2006.50 umol/kg
        3. CRM Analysis Info: For every renewal of coulometer solutions, certified reference materials(CRM, batch 69) provided by Prof. A. G. Dickson of Scripps Institution of Oceanography were analyzed. In addition, reference materials (RM) provided by JAMSTEC (2 kinds) and KANSO were measured at the initial, intermediateand end times of a coulometer solution's lifetime.
    3. Field Replicate Info:
    4. Poisoning Info: 100 uL
      1. Poisoning Correction Description:
      2. Poison Volume: 100 uL
    5. Accuracy Info: The Average and standard deviation of absolute values of differences of CT analyzed 1.2 umol kg-1 for system A and 1.1 umol kg-1 (n=162) for system B.
    6. Method References: Johnson, K.M., A.G. Dickson, G. Eischeid, C. Goyet, P. Guenther, R.M. Key, F. J. Millero, D. Purkerson, C.L. Sabine, R.G. Schottle, D.W.R. Wallace, R.J. Wilke and C.D. Winn (1998): Coulometric total carbon dioxide analysis for marine studies: assessment of the quality of total inorganic carbon measurements made during theUS Indian Ocean CO2 survey 1994-1996, Mar. Chem., 63, 21-37.
    7. Citations:
  • Alkalinity:
    1. Curve Fitting Method: The measuring system for AT (customized by Nippon ANS, Inc.) comprises of a water dispensing unit, an autoburette (Metrohm), a pH meter (Thermo Orion) and auto-sampler (6 ports). They are automatically controlled by a PC. Separate electrodes (Reference electrode: REF201, (Radiometer), Glass pH electrode: pHG201-7 (Radiometer)), or combined electrodes (ROSS 8102BN, Thermo Orion) were used.
    2. Type of Titration:
    3. Description of Other Titration:
    4. Cell Type: Closed
    5. CRM cale: Dickson CRM, batch 69, certified value = 2114.42 umol kg-1
    6. Sample Volume: 130 mL
    7. Magnitude of Blank Correction: (CRM, batches 80 and 75, certified value = 2214.49 and 2210.09 μmol kg-1)
    8. Accuracy Info: The average and standard deviation of absolute values of differences of AT analyzed consecutively were 0.5 and 0.5 umol kg-1(n = 407).
    9. Method References: Yao W. and R. H. Byrne (1998) Simplified seawater alkalinity analysis: Use of linear array spectrometers. Deep-Sea Research I 45, 1383-1392.
    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: Total scale
    2. pH Analysis Method: Measurement of pH was made by a pH measuring system (Nippon ANS, Inc.), which adopts spectrophotometry. The system comprises of a water dispensing unit and a spectrophotometer (Carry 50 Scan, Varian).
    3. Calibration Info:
      1. Calibration Description: For an indicator solution, m-cresol purple (2 mM) was used.
      2. In Situ Temperature: na
      3. Temperature of Analysis: 25
      4. Temperature Normalization: na
      5. In Situ Pressure: na
    4. Accuracy Info: The average and standard deviation of absolute values of differences of pH analyzed consecutively were 0.0005 and 0.0006 (n = 565).
    5. Method References: Clayton, T.D. and R.H. Byrne (1993): Spectrophotometric seawater pH easurements: total hydrogen ion concentration scale calibration of m-cresol purple and at-sea results. Deep-Sea Research 40, 2115-2129.DOE (1994): Handbook of methods for the analysis of the various parameters of the carbon dioxide system in sea water, version 2, A. G. Dickson & C. Goyet, eds.
Method References:
Data Set References: Fukasawa, M., T. Kawano, A. Murata, H. Uchida, and T. Doi. 2005. Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Mirai Repeat Hydrography Cruise in the Pacific Ocean: CLIVAR CO2 Section P14_2007 (October 8 - December 26, 2007). http://cdiac.ornl.gov/oceans/RepeatSections/clivar_p14.html. Japan Agency for Marine-Earth and Technology (JAMSTEC), Natsushima, Yokosuka, Japan.
Citation: Fukasawa, M., T. Kawano, A. Murata, H. Uchida, and T. Doi. 2005. Carbon Dioxide, Hydrographic, and Chemical Data Obtained During the R/V Mirai Repeat Hydrography Cruise in the Pacific Ocean: CLIVAR CO2 Section P14_2007 (October 8 - December 26, 2007). http://cdiac.ornl.gov/oceans/RepeatSections/clivar_p14.html. Japan Agency for Marine-Earth and Technology (JAMSTEC), Natsushima, Yokosuka, Japan.
Measurement Type: discrete measurement discrete data discrete measurements bottle measurement bottle data bottle measurements
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