Processing Steps |
- Parameter or Variable: Dissolved Inorganic Carbon; Abbreviation: DIC; Unit: umol kg-1; Observation type: Profile (discrete samples); In-situ / Manipulation / Response variable: in-situ observation; Measured or calculated: Measured; Sampling instrument: Niskin bottle; Analyzing instrument: AIRICA; Detailed sampling and analyzing information: The Automated Infra Red Inorganic Carbon Analyzer (AIRICA) by Marianda paired with a LiCOR LI-7000 Automated CO2 Analyzer was used to conduct an IR-detection of carbon dioxide with a carrier gas.; CRM manufacturer: UCSD; CRM batch number: 190 and 194; Preservation method: HgCl2; Preservative volume: Saturated, 200 uL; Preservative correction: none; Uncertainty: 2 umol kg-1; Quality flag convention: Data flags: 1 = not calibrated, 2 = good, 3 = questionable, 4 = bad, 5 = not reported, 6 = interpolated over > 2 dbar interval, 7 = despiked, 8 = not assigned for CTD data, 9 = not sampled; Method reference: Monacci, N. M., Cross, J. N., Evans, W., Mathis, J. T., and Wang, H.: A decade of marine inorganic carbon chemistry observations in the northern Gulf of Alaska – insights into an environment in transition, Earth Syst. Sci. Data, 16, 647–665, https://doi.org/10.5194/essd-16-647-2024, 2024.; Researcher name: Natalie Monacci; Researcher institution: UAF.
- Parameter or Variable: Total alkalinity; Abbreviation: TA; Unit: umol kg-1; Observation type: Profile (discrete samples); In-situ / Manipulation / Response variable: in-situ observation; Measured or calculated: Measured; Sampling instrument: Niskin bottle; Analyzing instrument: VINDTA 3S; Type of titration: HCl titrant with Metrohm automated burette; Cell type (open or closed): open; Curve fitting method: potentiometric; Detailed sampling and analyzing information: The Versatile INstrument for the Determination of Total inorganic and titration of Alkalinity (VINDTA) by Marianda was used to conduct a potentiometric alkalinity titration with an open cell.; CRM manufacturer: UCSD; CRM batch number: 190 and 194; Preservation method: HgCl2; Preservative volume: Saturated, 200 uL; Preservative correction: none; Uncertainty: 2 umol kg-1; Quality flag convention: Data flags: 1 = not calibrated, 2 = good, 3 = questionable, 4 = bad, 5 = not reported, 6 = interpolated over > 2 dbar interval, 7 = despiked, 8 = not assigned for CTD data, 9 = not sampled; Method reference: Monacci, N. M., Cross, J. N., Evans, W., Mathis, J. T., and Wang, H.: A decade of marine inorganic carbon chemistry observations in the northern Gulf of Alaska – insights into an environment in transition, Earth Syst. Sci. Data, 16, 647–665, https://doi.org/10.5194/essd-16-647-2024, 2024.; Researcher name: Natalie Monacci; Researcher institution: UAF.
- Parameter or Variable: Silicate concentration in sea water; Abbreviation: Silicate; Unit: umol kg-1; Observation type: Profile (discrete samples); Measured or calculated: Measured; Sampling instrument: Niskin bottle; Detailed sampling and analyzing information: Samples were collected in 50 ml high-density polyethylene bottles that were rinsed first with 10% HCl prior to each station, and rinsed at least three times with sample before filling. Some samples were refrigerated for 3-12 hours prior to analysis. Nutrient samples were analyzed according to the methods of Gordon, et al (1993).; Quality flag convention: Data flags: 1 = not calibrated, 2 = good, 3 = questionable, 4 = bad, 5 = not reported, 6 = interpolated over > 2 dbar interval, 7 = despiked, 8 = not assigned for CTD data, 9 = not sampled; Method reference: Gordon, I., Jennings, J.C., Ross, J.A., Krest, J. 1993. A Suggested Protocol for Continuous Flow Automated Analysis of Seawater Nutrients (Phosphate, Nitrate, Nitrite and Silicic Acid) in the WOCE Hydrographic Program and the Joint Global Ocean Fluxes Study. Methods Manual WHPO. 91-1. Mantoura, R.F.C., Woodward, E.M.S., 1983. Optimization of the indophenol blue method for the automated determination of ammonia in estuarine waters. Estuar. Coast. Shelf Sci. 17, 219–224.; Researcher name: Calvin Mordy; Researcher institution: UW CICOES.
- Parameter or Variable: Phosphate concentration in sea water; Abbreviation: Phosphate; Unit: umol kg-1; Observation type: Profile (discrete samples); Measured or calculated: Measured; Sampling instrument: Niskin bottle; Detailed sampling and analyzing information: Samples were collected in 50 ml high-density polyethylene bottles that were rinsed first with 10% HCl prior to each station, and rinsed at least three times with sample before filling. Some samples were refrigerated for 3-12 hours prior to analysis. Nutrient samples were analyzed according to the methods of Gordon, et al (1993).; Quality flag convention: Data flags: 1 = not calibrated, 2 = good, 3 = questionable, 4 = bad, 5 = not reported, 6 = interpolated over > 2 dbar interval, 7 = despiked, 8 = not assigned for CTD data, 9 = not sampled; Method reference: Gordon, I., Jennings, J.C., Ross, J.A., Krest, J. 1993. A Suggested Protocol for Continuous Flow Automated Analysis of Seawater Nutrients (Phosphate, Nitrate, Nitrite and Silicic Acid) in the WOCE Hydrographic Program and the Joint Global Ocean Fluxes Study. Methods Manual WHPO. 91-1. Mantoura, R.F.C., Woodward, E.M.S., 1983. Optimization of the indophenol blue method for the automated determination of ammonia in estuarine waters. Estuar. Coast. Shelf Sci. 17, 219–224.; Researcher name: Calvin Mordy; Researcher institution: UW CICOES.
- Parameter or Variable: Nitrate concentration in sea water; Abbreviation: Nitrate; Unit: umol kg-1; Observation type: Profile (discrete samples); Measured or calculated: Measured; Sampling instrument: Niskin bottle; Detailed sampling and analyzing information: Samples were collected in 50 ml high-density polyethylene bottles that were rinsed first with 10% HCl prior to each station, and rinsed at least three times with sample before filling. Some samples were refrigerated for 3-12 hours prior to analysis. Nutrient samples were analyzed according to the methods of Gordon, et al (1993).; Quality flag convention: Data flags: 1 = not calibrated, 2 = good, 3 = questionable, 4 = bad, 5 = not reported, 6 = interpolated over > 2 dbar interval, 7 = despiked, 8 = not assigned for CTD data, 9 = not sampled; Method reference: Gordon, I., Jennings, J.C., Ross, J.A., Krest, J. 1993. A Suggested Protocol for Continuous Flow Automated Analysis of Seawater Nutrients (Phosphate, Nitrate, Nitrite and Silicic Acid) in the WOCE Hydrographic Program and the Joint Global Ocean Fluxes Study. Methods Manual WHPO. 91-1. Mantoura, R.F.C., Woodward, E.M.S., 1983. Optimization of the indophenol blue method for the automated determination of ammonia in estuarine waters. Estuar. Coast. Shelf Sci. 17, 219–224.; Researcher name: Calvin Mordy; Researcher institution: UW CICOES.
- Parameter or Variable: Nitrite concentration in sea water; Abbreviation: Nitrite; Unit: umol kg-1; Observation type: Profile (discrete samples); Measured or calculated: Measured; Sampling instrument: Niskin bottle; Detailed sampling and analyzing information: Samples were collected in 50 ml high-density polyethylene bottles that were rinsed first with 10% HCl prior to each station, and rinsed at least three times with sample before filling. Some samples were refrigerated for 3-12 hours prior to analysis. Nutrient samples were analyzed according to the methods of Gordon, et al (1993).; Quality flag convention: Data flags: 1 = not calibrated, 2 = good, 3 = questionable, 4 = bad, 5 = not reported, 6 = interpolated over > 2 dbar interval, 7 = despiked, 8 = not assigned for CTD data, 9 = not sampled; Method reference: Gordon, I., Jennings, J.C., Ross, J.A., Krest, J. 1993. A Suggested Protocol for Continuous Flow Automated Analysis of Seawater Nutrients (Phosphate, Nitrate, Nitrite and Silicic Acid) in the WOCE Hydrographic Program and the Joint Global Ocean Fluxes Study. Methods Manual WHPO. 91-1. Mantoura, R.F.C., Woodward, E.M.S., 1983. Optimization of the indophenol blue method for the automated determination of ammonia in estuarine waters. Estuar. Coast. Shelf Sci. 17, 219–224.; Researcher name: Calvin Mordy; Researcher institution: UW CICOES.
- Parameter or Variable: Ammonium concentration in sea water; Abbreviation: Ammonium; Unit: umol kg-1; Observation type: Profile (discrete samples); Measured or calculated: Measured; Sampling instrument: Niskin bottle; Detailed sampling and analyzing information: Samples were collected in 50 ml high-density polyethylene bottles that were rinsed first with 10% HCl prior to each station, and rinsed at least three times with sample before filling. Some samples were refrigerated for 3-12 hours prior to analysis. Nutrient samples were analyzed according to the methods of Gordon, et al (1993). Ammonium was measured using an indophenol blue method modified from Mantoura and Woodward (1983).; Quality flag convention: Data flags: 1 = not calibrated, 2 = good, 3 = questionable, 4 = bad, 5 = not reported, 6 = interpolated over > 2 dbar interval, 7 = despiked, 8 = not assigned for CTD data, 9 = not sampled; Method reference: Gordon, I., Jennings, J.C., Ross, J.A., Krest, J. 1993. A Suggested Protocol for Continuous Flow Automated Analysis of Seawater Nutrients (Phosphate, Nitrate, Nitrite and Silicic Acid) in the WOCE Hydrographic Program and the Joint Global Ocean Fluxes Study. Methods Manual WHPO. 91-1. Mantoura, R.F.C., Woodward, E.M.S., 1983. Optimization of the indophenol blue method for the automated determination of ammonia in estuarine waters. Estuar. Coast. Shelf Sci. 17, 219–224.; Researcher name: Calvin Mordy; Researcher institution: UW CICOES.
- Parameter or Variable: Sea water temperature; Abbreviation: CTDTEMP_ITS90; Unit: C; Observation type: Profile (discrete samples); Measured or calculated: Measured; Sampling instrument: CTD911 and 12L Niskin bottle; Detailed sampling and analyzing information: A profiling CTD 911 was used to collect the conductivity, temperature, and depth data at each station. Data are processed using Seabird CTD software and calibration file. Post-processing includes filtering extreme outliers, extrapolation of values from the top value collected at ~3-5m to the surface. Each cast is visually reviewed for reasonableness and density inversions (greater than 0.02 sigma-t) caused by spurious measurements. This process is facilitated by comparison of the outputs of the 2 temperature and conductivity sensors. Profile data are bin-averaged to 1 meter.; Uncertainty: 0.002; Quality flag convention: Data flags: 1 = not calibrated, 2 = good, 3 = questionable, 4 = bad, 5 = not reported, 6 = interpolated over > 2 dbar interval, 7 = despiked, 8 = not assigned for CTD data, 9 = not sampled; Researcher name: Shaun Bell; Researcher institution: NOAA PMEL.
- Parameter or Variable: Sea water salinity; Abbreviation: CTDSAL_PSS78; Unit: PSU; Observation type: Profile (discrete samples); Measured or calculated: Calculated; Sampling instrument: CTD; Detailed sampling and analyzing information: A profiling CTD 911 was used to collect the conductivity, temperature, and depth data at each station. Data are processed using Seabird CTD software and calibration file. Post-processing includes filtering extreme outliers, extrapolation of values from the top value collected at ~3-5m to the surface. Each cast is visually reviewed for reasonableness and density inversions (greater than 0.02 sigma-t) caused by spurious measurements. This process is facilitated by comparison of the outputs of the 2 temperature and conductivity sensors. Profile data are bin-averaged to 1 meter.; Uncertainty: 0.002; Quality flag convention: Data flags: 1 = not calibrated, 2 = good, 3 = questionable, 4 = bad, 5 = not reported, 6 = interpolated over > 2 dbar interval, 7 = despiked, 8 = not assigned for CTD data, 9 = not sampled; Researcher name: Shaun Bell; Researcher institution: NOAA PMEL.
- Parameter or Variable: Dissolved oxygen concentration in sea water; Abbreviation: CTDOXY; Unit: umol kg-1; Observation type: Profile (discrete samples); Measured or calculated: Calculated; Sampling instrument: CTD; Detailed sampling and analyzing information: In situ data was collected from a profiling CTD 911 paired with a SBE 43 to collect dissolved oxygen data at each depth. Data were originally processed to filter out extreme outliers and reviewed for reasonableness, along with other profile data. Oxygen was recorded in ml/l, and was corrected and converted into units of umol/kg using a Winkler Slope Correction: 0.958.; Uncertainty: 1 umol kg-1; Quality flag convention: Data flags: 1 = not calibrated, 2 = good, 3 = questionable, 4 = bad, 5 = not reported, 6 = interpolated over > 2 dbar interval, 7 = despiked, 8 = not assigned for CTD data, 9 = not sampled; Researcher name: Shaun Bell and Calvin Mordy; Researcher institution: NOAA PMEL .
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