Underway measurements metadata form

• Investigator:
  • Name: Krasakopoulou, Dr. Evangelia
  • Organization: Hellenic Centre for Marine Research (HCMR)
  • Address:
    Institute of Oceanography, Hellenic Centre for Marine Research, P.O. Box 712, 19013 Anavyssos, Greece
  • Phone: +30-229190-76409
  • Email: ekras@ath.hcmr.gr
  Investigator #2:
  • Name: Rapsomanikis, Prof. Spyridon
  • Organization: Democritus University of Thrace
  • Address:
    Department of Environmental Engineering, Democritus University of Thrace,67100, Xanthi, Greece
  • Phone:
  • Email: rapso@env.duth.gr
• Dataset Info:
  • Dataset ID: HCMR-Aegean Sea-February 2006
  • Submission Dates:
    • Initial Submission: 2009/08/22
    • Revised Submission:
• Cruise Info:
  • Experiment:
    • Experiment Name: NICOP
    • Cruise:
      • Cruise ID: NICOP-2
      • Section:
      • Geographical Coverage:
        • Geographical Region:
          Aegean Sea (Eastern Mediterranean)
        • Bounds:
          • Westernmost Longitude: 23.6334
            Degrees, Minutes, Seconds: E
          • Easternmost Longitude: 26.1291
            Degrees, Minutes, Seconds: E
          • Northernmost Latitude: 40.4729
            Degrees, Minutes, Seconds: N
          • Southernmost Latitude: 35.6175
            Degrees, Minutes, Seconds: N
      • Temporal Coverage:
        • Start Date: 2006/02/08
        • End Date: 2006/02/13
      • Ports of Call:
        Kavala Piraeus
  • Vessel:
    • Vessel Name: R/V AEGAEO
    • Vessel ID: SXYY (call sign)
    • Country: Greece
    • Vessel Owner: Hellenic Centre for Marine Research (HCMR)
• Variables Info:
  • Variable:
    • Variable Name: mon/day/yr
    • Description of Variable: Date in the format mon/day/yr
  • Method Description:
    • Equilibrator Design:
      • Equilibrator type: showerhead Weiss equilibrator
      • Equilibrator volume:volume of ~30 L with a headspace of ~16 L
      • Water_Flow_Rate: 12-15 L/min
      • Headspace_Gas_Flow_Rate:120-130 mL/min
      • Vented: Yes
    • Measurement Method: gas chromatography; CO2 is catalytically reduced to methane, which is detected by a flame-ionization detector (FID)
    • Manufacturer of Calibration Gas: Messer-Griesheim
    • C0₂ Sensors:
      • Manufacturer: Shimadzu GC/FID
      • Model:
      • Environmental Control:
        
      • Resolution:
      • Uncertainty: The accuracy of the entire system was better than 0.5 ppmV for xCO2atm and 1.0 ppmV for xCO2sw.
      • Calibration:
        Two CO2 standards of 257 and 345 ppmV CO2 provided from Messer-Griesheim were used to calibrate the system during the cruise (once a day). The reproducibility (1σ) of the measurements was less than ±0.4 ppmV as determined from multiple injections of the calibration gases.
    • Other sensors:
      • Manufacturer:
      • Model:
      • Resolution:
      • Calibration:
        
    • Method References:
      Johnson, J.E., 1999. Evaluation of a seawater equilibrator for shipboard analysis of dissolved oceanic trace gases. Analytica Chimica Acta 395, 119-132. Weiss, R.F., 1981. Determinations of carbon dioxide and methane by dual catalyst flame ionisation chromatography and nitrous oxide by electron capture chromatography. J. Chromatogr. Sci., 19, 611-616. Weiss, R.F., Van Woy, F.A., Salameh, P.K., 1992. Surface water and atmospheric carbon dioxide and nitrous oxide observations by shipboard automated gas chromatography: Results from expeditions between 1977 and 1990. Scripps Institution of Oceanography Reference 92-11. ORNL/CDIAC-59, NDP-044. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, Oak Ridge, Tennessee. 144 pp. Krasakopoulou E., Rapsomanikis, S., Papadopoulos, A., Papathanassiou, E., 2009. Partial pressure and air-sea CO2 flux in the Aegean Sea during February 2006. Continental Shelf Research, 29, 1477-1488.
  • Additional Information:
    The calculation for the fugacity at SST involves a temperature correction term (Takahashi et al.,1993) for the increase of fCO2 due to heating of the water from passing through the pump and tubing within the ship. The water in the equilibrator was typically 0.5 °C warmer than sea surface temperature. Takahashi, T., Olafsson, J., Goddard, J., Chipman, D.W., Sutherland, S.C., 1993. Seasonal variation of CO2 and nutrients in the high latitude surface oceans: a comparative study. Global Biogeochemical Cycles 7, 843–878.
  • Data Set References:
    Krasakopoulou E., Rapsomanikis, S., Papadopoulos, A., Papathanassiou, E., 2009. Partial pressure and air-sea CO2 flux in the Aegean Sea during February 2006. Continental Shelf Research, 29, 1477-1488.
  • Citation:
    Krasakopoulou E., Rapsomanikis, S., 2009. Sea Surface and Atmospheric fCO2 data measured in the Aegean Sea onboard R/V AEGAEO during February 2006.
• Data Set Link:
  • URL: http://www.hcmr.gr/
  • Label:
  • Link Note:
    These data are made freely available to the public and the scientific community in the belief that their wide dissemination will lead to greater understanding and new scientific insights. We rely on the ethics and integrity of the user to assure that HCMR and Democritus Univ. of Thrace receive fair credit for our work.