Processing Steps |
- Parameter or Variable: Dissolved Inorganic Carbon; Abbreviation: DIC; Unit: umol/kg; Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Calculation method and parameters: none; Sampling instrument: Rosette bottle; Detailed sampling and analyzing information: DIC was determined by acidifying the sample, and using a gas extraction/coulometric titration technique as described in Dickson et al. (2007).; Preservation method: mercury(II) chloride; Quality flag convention: WOCE quality flags; Method reference: Dickson, Andrew Gilmore, Christopher L. Sabine, and James Robert Christian. "Guide to Best Practices for Ocean CO2 Measurements." (2007).; Researcher name: Andrew Dickson; Researcher institution: Scripps Institution of Oceanography.
- Parameter or Variable: Total alkalinity; Abbreviation: TA; Unit: umol/kg; Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: Rosette bottle; Analyzing instrument: Alkalinity titrator; Cell type (open or closed): Open; Detailed sampling and analyzing information: Amber 250 ml polyproplene bottles are filled with water from Niskin bottles. TA was determined using a two-stage open-cell-titration technique as described in Dickson et al. (2003).; Quality flag convention: WOCE quality flags; Method reference: Dickson, AG, Afghan JD, Anderson GC. "Reference materials for oceanic CO2 analysis: a method for the certification of total alkalinity". Marine Chemistry. 80:185-197. 10.1016/s0304-4203(02)00133-0 (2003); Researcher name: Andrew Dickson; Researcher institution: Scripps Institution of Oceanography.
- Parameter or Variable: Sea water pressure; Abbreviation: CTD Pressure; Unit: dbar; Observation type: profile; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: SBE 9plus CTD Digiquartz pressure sensor; Detailed sampling and analyzing information: Digiquartz pressure sensor connected to the CTD-Rosette measures pressure profiles. During upcasts, Rosette bottles are closed at target depths to trap seawater for various analyses. At those target depths, CTD pressure values are averaged over 1.5 seconds starting from the beginning of bottle closure to obtain discrete pressure values. Typically pressure sensors are calibrated every 12 months by manufacturer.; Researcher name: Matthias Lankhorst; Researcher institution: Scripps Institution of Oceanography.
- Parameter or Variable: Sea water temperature; Abbreviation: CTD Temperature; Unit: ITS-90 scale degC; Observation type: profile; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: SBE 3plus; Detailed sampling and analyzing information: SBE 3plus dual temperature sensor connected to the CTD-Rosette measures temperature profiles. During upcasts, Rosette bottles are closed at target depths to trap seawater. CTD temperature values are averaged over 1.5 seconds from bottle closure to obtain discrete temperature values. Typically SBE 3plus calibration is done every 4 months by the Oceanographic Data Facility at Scripps Institution of Oceanography.; Uncertainty: plus minus 0.001 degC; Quality flag convention: WOCE quality flags; Researcher name: Matthias Lankhorst; Researcher institution: Scripps Institution of Oceanography.
- Parameter or Variable: Sea water salinity; Abbreviation: CTD Salinity; Unit: psu; Observation type: profile; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: calculated from measured conductivity; Sampling instrument: SBE 4C; Detailed sampling and analyzing information: SBE 4C dual conductivity sensor connected to the CTD-Rosette meausres conductivity profiles. During upcasts, Rosette bottles are closed at target depths to trap seawater. CTD salinity values calculated from CTD conductivity are averaged over 1.5 seconds from bottle closure to obtain discrete salinity values. Typically SBE 4C calibration is done every 4 months by SBE. No other data processing has been applied.; Uncertainty: plus minus 0.005 psu; Quality flag convention: WOCE quality flags. 2=good data, 3=questionable data, 4=bad data, 5= data not reported, 6=mean of replicate measurements, 9=sample not drawn; Researcher name: Matthias Lankhorst; Researcher institution: Scripps Institution of Oceanography.
- Parameter or Variable: Sea water practical salinity; Abbreviation: Bottle salinity; Unit: psu; Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: Rosette bottle; Analyzing instrument: Salinometer; Detailed sampling and analyzing information: Rosette bottle water samples were taken to the shore and salinity measurements were made using salinometer.; Quality flag convention: WOCE quality flags. 2=good data, 3=questionable data, 4=bad data, 5= data not reported, 6=mean of replicate measurements, 9=sample not drawn; Researcher name: Matthias Lankhorst; Researcher institution: Scripps Institution of Oceanography.
- Parameter or Variable: Dissolved oxygen concentration in sea water; Abbreviation: Bottle dissolved oxygen; Unit: ml/L; Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: Rosette bottle; Analyzing instrument: Oxygen titrator; Detailed sampling and analyzing information: Bottle samples are analyzed by an SIO oxygen titrator (an iodine titrator). The function of the SIO oxygen titrator is little different in principle from the basic Winkler titration as modified by Carpenter (1965). As an end-point indicator, the very strong ultra-violet light absorption is used instead of the visible color of the iodine-starch complex.; Quality flag convention: WOCE quality flags; Method reference: Carpenter, J. H., 1965. The Chesapeake Bay Institute technique for the Winkler dissolved oxygen method. Limnology and Oceanography, 10, pp. 141-143.; Researcher name: Matthias Lankhorst; Researcher institution: Scripps Institution of Oceanography.
- Parameter or Variable: Nitrate concentration in sea water; Abbreviation: NO3; Unit: umol/L; Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: Rosette bottle; Analyzing instrument: Seal Analytical continuous-flow AutoAnalyzer 3 (AA3); Detailed sampling and analyzing information: Water samples are analyzed by a Seal Analytical continuous-flow AutoAnalyzer 3 (AA3). A modification of the Armstrong et al. (1967) procedure is used for the analysis of nitrate and nitrite.; Quality flag convention: WOCE quality flags; Method reference: Armstrong, F.A.J., Stearns, C.A., and Strickland, J.D.H., "The measurement of upwelling and subsequent biological processes by means of the Technicon Autoanalyzer and associated equipment," Deep-Sea Research, 14, pp.381-389 (1967).; Researcher name: Mark Ohman; Researcher institution: Scripps Institution of Oceanography.
- Parameter or Variable: Nitrite concentration in sea water; Abbreviation: NO2; Unit: umol/L; Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: Rosette bottle; Analyzing instrument: Seal Analytical continuous-flow AutoAnalyzer 3 (AA3); Detailed sampling and analyzing information: Water samples are analyzed by a Seal Analytical continuous-flow AutoAnalyzer 3 (AA3). A modification of the Armstrong et al. (1967) procedure is used for the analysis of nitrate and nitrite.; Quality flag convention: WOCE quality flags; Method reference: Armstrong, F.A.J., Stearns, C.A., and Strickland, J.D.H., "The measurement of upwelling and subsequent biological processes by means of the Technicon Autoanalyzer and associated equipment," Deep-Sea Research, 14, pp.381-389 (1967).; Researcher name: Mark Ohman; Researcher institution: Scripps Institution of Oceanography.
- Parameter or Variable: Ammonium concentration in sea water; Abbreviation: NH4; Unit: umol/L; Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: Rosette bottle; Detailed sampling and analyzing information: The basic method of Kerouel and Aminot (Kero97) is used.; Quality flag convention: WOCE quality flags; Method reference: Kerouel, R., Aminot, A., Fluorometric determination of ammonia in sea and estuarine waters by direct segmented flow analysis.. Marine Chemistry, vol 57, no. 3-4, pp. 265-275, July 1997; Researcher name: Mark Ohman; Researcher institution: Scripps Institution of Oceanography.
- Parameter or Variable: Phosphate concentration in sea water; Abbreviation: PO4; Unit: umol/L; Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: Rosette bottle; Detailed sampling and analyzing information: A modification of the Bernhardt and Wilhelms (1967) method was used.; Quality flag convention: WOCE quality flags; Method reference: Bernhardt, H., and Wilhelms, A., "The continuous determination of low level iron, soluble phosphate and total phosphate with the AutoAnalyzer," Technicon Symposia, I, pp.385-389 (1967).; Researcher name: Mark Ohman; Researcher institution: Scripps Institution of Oceanography.
- Parameter or Variable: Silicate concentration in sea water; Abbreviation: SIL; Unit: umol/L; Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: Rosette bottle; Detailed sampling and analyzing information: The basic Armstrong et al. (1967) method was used.; Quality flag convention: WOCE quality flags; Method reference: Armstrong, F.A.J., Stearns, C.A., and Strickland, J.D.H., "The measurement of upwelling and subsequent biological processes by means of the Technicon Autoanalyzer and associated equipment," Deep-Sea Research, 14, pp.381-389 (1967).; Researcher name: Mark Ohman; Researcher institution: Scripps Institution of Oceanography.
- Parameter or Variable: Mass concentration of cholophyll-a in sea water; Abbreviation: CHL-a; Unit: ug/L; Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: Rosette bottle; Analyzing instrument: Fluorometer; Detailed sampling and analyzing information: Water samples are filtered onto GF/F filters, then chlorophyll-a is extracted in an acetone solution. Fluorometer is used to read fluorescence before and after acidification to calculate chlorophyll-a and phaeopigment.; Quality flag convention: WOCE quality flags; Method reference: Yentsch, C.S., Menzel, D.W., "A method for the determination of phytoplankton chlorophyll and phaeophytin by fluorescence", Deep-Sea Res.10: 221-231 (1963). Holm_Hansen, O., Lorenzen, C.J., Holms, R.W., Strickland, J.D.H., "Fluorometric Determination of Chlorophyll", J. Cons.perm.int Explor. Mer. 30: 3-15 (1965). Lorenzen, C. J., "Determination of chlorophylls and phaeopigments: spectrophotometric equations", Limnol. Oceanogr. 12: 343.346 (1967).; Researcher name: Mark Ohman; Researcher institution: Scripps Institution of Oceanography.
- Parameter or Variable: Mass concentration of phaeo pigment in sea water; Abbreviation: Phaeo pigment; Unit: ug/L; Observation type: Discrete measurements from Rosette bottle water samples collected on CTD casts; In-situ / Manipulation / Response variable: In-situ observation; Measured or calculated: Measured; Sampling instrument: Rosette bottle; Analyzing instrument: Fluorometer; Detailed sampling and analyzing information: Water samples are filtered onto GF/F filters, then chlorophyll-a is extracted in an acetone solution. Fluorometer is used to read fluorescence before and after acidification to calculate chlorophyll-a and phaeopigment.; Quality flag convention: WOCE quality flags; Method reference: Yentsch, C.S., Menzel, D.W., "A method for the determination of phytoplankton chlorophyll and phaeophytin by fluorescence", Deep-Sea Res.10: 221-231 (1963). Holm_Hansen, O., Lorenzen, C.J., Holms, R.W., Strickland, J.D.H., "Fluorometric Determination of Chlorophyll", J. Cons.perm.int Explor. Mer. 30: 3-15 (1965). Lorenzen, C. J., "Determination of chlorophylls and phaeopigments: spectrophotometric equations", Limnol. Oceanogr. 12: 343.346 (1967).; Researcher name: Mark Ohman; Researcher institution: Scripps Institution of Oceanography .
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