Surface water CO2 parameters collected by shellfish growers and partners in the northern Salish Sea from 2016 to 2018

pCO2 and TCO2 measurements were made on surface seawater collected by shellfish growers and partners in the northern Salish Sea during 2016 and 2017. Seawater was collected by hand into 300 ml amber glass bottles. Sample bottles were rinsed 3 times, filled with sample seawater with care to prevent bubbles, fixed with 200 µl of mercuric chloride, and crimp-sealed using polyethylene-lined metal caps. Temperature was also determined at the time of seawater sample collection and prior to with mercuric chloride addition using NIST traceable thermometers (VWR PN 23609-176). Finally, temperature and salinity were determined at the time of sample analysis at the Quadra Island Field Station (QIFS) using NIST traceable thermometers and a YSI MultiLab 4010-1 with a MultiLab IDS 4310 conductivity and temperature probe. The YSI probe was calibrated using certified reference materials of known salinity prior to seawater sample analysis. For detailed protocols on sample collection, data processing including CO2 system determination, and quality assurance, please see Pocock et al. (2017; http://dx.doi.org/10.21966/1.521066). CO2 system parameters (pH, pCO2, aragonite saturation) were computed using the carbonate acid dissociation constants of Lueker et al. (2000). Note alkalinity (Alk) here is assumed here to consist of carbonate, bicarbonate, borate, hydroxide, and hydrogen ions; neglecting the influence of nutrients and organic acids. The effort to collect these data are part of the Hakai Institute’s directive to advance the understanding of carbon cycling in northeast Pacific coastal settings with specific emphasis on ocean acidification. Cite as: Evans, W., K. Pocock, A. Hare, and C. Weekes. (2018). Surface water CO2 parameters collected by shellfish growers and partners in the northern Salish Sea from 2016 to 2018. Version 1.0. Hakai Institute. Dataset. [access date]. Type of Study: distributed surface water measurements Temporal Coverage: May 9, 2016 to March 24, 2018 Spatial Coverage: Surface seawater collected at select shellfish lease and beach sites distributed within the northern Salish Sea. Geographic Names: Northern Salish Sea; British Columbia coast; North Pacific Ocean Location of organism collection: N/A Platforms: shellfish rafts, vessels, or beach sites Version: 1.0 Submission Date: September 27, 2018 Filename: BCSGA_partner_2016_2018.txt Column Header Information: (1) year (2) month (3) day (4) hour (5) minute (6) matlab_serial_date_number (7) latitude (8) longitude (9) depth (10) NIST temp (°C) (11) YSI salinity (PSS-78) (12) CRM corrected TCO2 (µmol kg-1) (13) Alkalinity (µmol kg-1) (8) (14) pCO2@insituT (µatm) (15) pHT@insituT (16) aragonite saturation (17) group ID (18) pCO2@analysisT (µatm) (19) NIST Analysis T (°C) Description of group ID: 1 = Fanny Bay Oysters, 3 = Deep Bay Marine Field Station, 4 = Mac’s Oysters, 8 = Sawmill Bay Shellfish. Description of CO2 system parameters: total inorganic carbon Abbreviation: CRM corrected TCO2 Unit: µmol kg-1 Observation type: measurements from discrete seawater sample bottle In-situ/Manipulation/Response variable: In situ observation Measured or calculated: measured TCO2 with correction factor from analysis of certified reference material (CRM; A. Dickson) applied. Correction factors ranged from 0.99 to 1.01 Sampling instrument: Niskin bottle triggered with messenger Analyzing instrument: Dakunalytics, LLC Burke-o-Lator (BoL) pCO2/TCO2 analyzer with LI-COR LI-840A Detailed sampling and analyzing information: Seawater was collected from depth using Niskin bottles deployed along a wire and triggered using messengers. Seawater was drawn into 350 mL amber glass bottles using a section of silicone tubing attached to the nipple of the Niskin bottle. Sample bottles were rinsed 3x, filled from the bottom with care not to introduce bubbles, and left with ~3 mL of headspace. Seawater TCO2 was subsequently measured on the BoL at the QIFS via acidification and flow-balanced gas stripping followed by non-dispersive infrared gas analysis (LI-COR LI840A CO2/H2O). Protocols, analysis, and data handling details can be found in Pocock et al. (2017; http://dx.doi.org/10.21966/1.521066). Replicate information: triplicate samples were collected by each shellfish grower and partner Standardization description: xCO2 calibration functions developed during sequential analysis of gas standards of known concentration (nominally 150, 450, 750, and 1500 ppm; Scott-Marin, Inc.). TCO2 calibrated using solutions of Na2CO3 and NaHCO3 in deionized water prepared to have target TCO2 concentrations (nominally 800, 1600, and 2400 µmol kg-1) with Alk adjusted to give solution pCO2 near that of ambient room air. Standardization frequency: at the start and end of each daily analysis sequence CRM manufacturer: A. Dickson, Scripps Institute of Oceanography Poison name: mercuric chloride Poison volume: 200 µl Poison correction: saturated solution Uncertainty: 0.3% Quality flag convention: defined above Method reference: Hales, B., Suhrbier, A., Waldbusser, G.G., Feely, R.A., and Newton, J.A. (2016). The Carbonate Chemistry of the "Fattening Line," Willapa Bay, 2011-2014. Estuaries and Coasts, DOI 10.1007/s12237-12016-10136-12237. Researcher name: Wiley Evans Researcher institution: Hakai Institute Partial pressure of carbon dioxide at analysis temperature Abbreviation: pCO2@analysisT Unit: µatm Observation type: measurements from discrete seawater sample bottle In-situ/Manipulation/Response variable: In situ observation Measured or calculated: calculated from measured CO2 mole fractions (xCO2) and ambient atmospheric pressure Sampling instrument: Niskin bottle triggered with messenger Analyzing instrument: Dakunalytics, LLC Burke-o-Lator (BoL) pCO2/TCO2 analyzer with LI-COR LI-840A Detailed sampling and analyzing information: Seawater was collected from depth using Niskin bottles deployed along a wire and triggered using messengers. Seawater was drawn into 350 mL amber glass bottles using a section of silicone tubing attached to the nipple of the Niskin bottle. Sample bottles were rinsed 3x, filled from the bottom with care not to introduce bubbles, and left with ~3 mL of headspace. Seawater pCO2 was subsequently measured on the BoL at the QIFS via recirculated-headspace gas equilibration and non-dispersive infrared gas analysis (LI-COR LI840A CO2/H2O). Protocols, analysis, and data handling details can be found in Pocock et al. (2017; http://dx.doi.org/10.21966/1.521066). Replicate information: triplicate samples were collected by each shellfish grower and partner Standardization description: xCO2 calibration functions developed during sequential analysis of gas standards of known concentration (nominally 150, 450, 750, and 1500 ppm; Scott-Marin, Inc.) Standardization frequency: at the start and end of each daily analysis sequence CRM manufacturer: Scott-Marrin, Inc or Praxair Distribution Inc Poison name: mercuric chloride Poison volume: 200 µl Poison correction: saturated solution Uncertainty: 1.5% Quality flag convention: defined above Method reference: Hales, B., Suhrbier, A., Waldbusser, G.G., Feely, R.A., and Newton, J.A. (2016). The Carbonate Chemistry of the "Fattening Line," Willapa Bay, 2011-2014. Estuaries and Coasts, DOI 10.1007/s12237-12016-10136-12237. Researcher name: Wiley Evans Researcher institution: Hakai Institute alkalinity Abbreviation: alkalinity Unit: µmol kg-1 Observation type: derived from direct measurements In-situ/Manipulation/Response variable: In situ observation Measured or calculated: calculated from pCO2@analysisT and TCO2 adjusted to account for the change due to bubbling headspace gas through the sample (Wanninkhof and Thoning, 1993) using the carbonic acid dissociation constants from Lueker et al., (2000). Analyzing instrument: N/A Detailed sampling and analyzing information: N/A Replicate information: N/A Standardization description: N/A Standardization frequency: N/A CRM manufacturer: N/A Poison name: N/A Poison volume: N/A Poison correction: N/A Uncertainty: N/A Quality flag convention: defined above Method reference: Hales, B., Suhrbier, A., Waldbusser, G.G., Feely, R.A., and Newton, J.A. (2016). The Carbonate Chemistry of the "Fattening Line," Willapa Bay, 2011-2014. Estuaries and Coasts, DOI 10.1007/s12237-12016-10136-12237; Wanninkhof, R., and Thoning, K. (1993). Measurement of fugacity of CO2 in surface water using continuous and discrete sampling methods. Marine Chemistry 44, 189-204; Lueker, T.J., Dickson, A.G., and Keeling, C.D. (2000). Ocean pCO2 calculated from dissolved inorganic carbon, alkalinity, and equations for K1 and K2: validation based on laboratory measurements of CO2 in gas and seawater at equilibrium. Marine Chemistry 70, 105-119. Researcher name: Wiley Evans Researcher institution: Hakai Institute pCO2 at in situ temperature and pressure
Abbreviation: pCO2@insituT&P Unit: µatm Observation type: derived from direct measurements In-situ/Manipulation/Response variable: In situ observation Measured or calculated: calculated from CRM corrected TCO2, TA, CTD salinity, CTD temperature, and CTD pressure using the carbonic acid dissociation constants from Lueker et al., (2000). Analyzing instrument: N/A Detailed sampling and analyzing information: N/A Replicate information: N/A Standardization description: N/A Standardization frequency: N/A CRM manufacturer: N/A Poison name: N/A Poison volume: N/A Poison correction: N/A Uncertainty: N/A Quality flag convention: defined above Method reference: Hales, B., Suhrbier, A., Waldbusser, G.G., Feely, R.A., and Newton, J.A. (2016). The Carbonate Chemistry of the "Fattening Line," Willapa Bay, 2011-2014. Estuaries and Coasts, DOI 10.1007/s12237-12016-10136-12237; Lueker, T.J., Dickson, A.G., and Keeling, C.D. (2000). Ocean pCO2 calculated from dissolved inorganic carbon, alkalinity, and equations for K1 and K2: validation based on laboratory measurements of CO2 in gas and seawater at equilibrium. Marine Chemistry 70, 105-119. Researcher name: Wiley Evans Researcher institution: Hakai Institute pH on the total hydrogen ion scale Abbreviation: pHT Unit: unit less Observation type: derived from direct measurements In-situ/Manipulation/Response variable: In situ observation Measured or calculated: calculated from CRM corrected TCO2, TA, CTD salinity, CTD temperature, and CTD pressure using the carbonic acid dissociation constants from Lueker et al., (2000). Analyzing instrument: N/A Detailed sampling and analyzing information: N/A Replicate information: N/A Standardization description: N/A Standardization frequency: N/A CRM manufacturer: N/A Poison name: N/A Poison volume: N/A Poison correction: N/A Uncertainty: N/A Quality flag convention: defined above Method reference: Hales, B., Suhrbier, A., Waldbusser, G.G., Feely, R.A., and Newton, J.A. (2016). The Carbonate Chemistry of the "Fattening Line," Willapa Bay, 2011-2014. Estuaries and Coasts, DOI 10.1007/s12237-12016-10136-12237; Lueker, T.J., Dickson, A.G., and Keeling, C.D. (2000). Ocean pCO2 calculated from dissolved inorganic carbon, alkalinity, and equations for K1 and K2: validation based on laboratory measurements of CO2 in gas and seawater at equilibrium. Marine Chemistry 70, 105-119. Researcher name: Wiley Evans Researcher institution: Hakai Institute Aragonite saturation Abbreviation: Aragonite saturation Unit: unit less Observation type: derived from direct measurements In-situ/Manipulation/Response variable: In situ observation Measured or calculated: calculated from CRM corrected TCO2, TA, CTD salinity, CTD temperature, and CTD pressure using the carbonic acid dissociation constants from Lueker et al., (2000). Analyzing instrument: N/A Detailed sampling and analyzing information: N/A Replicate information: N/A Standardization description: N/A Standardization frequency: N/A CRM manufacturer: N/A Poison name: N/A Poison volume: N/A Poison correction: N/A Uncertainty: N/A Quality flag convention: defined above Method reference: Hales, B., Suhrbier, A., Waldbusser, G.G., Feely, R.A., and Newton, J.A. (2016). The Carbonate Chemistry of the "Fattening Line," Willapa Bay, 2011-2014. Estuaries and Coasts, DOI 10.1007/s12237-12016-10136-12237; Lueker, T.J., Dickson, A.G., and Keeling, C.D. (2000). Ocean pCO2 calculated from dissolved inorganic carbon, alkalinity, and equations for K1 and K2: validation based on laboratory measurements of CO2 in gas and seawater at equilibrium. Marine Chemistry 70, 105-119. Researcher name: Wiley Evans Researcher institution: Hakai Institute Researcher Contact: Please direct questions regarding these data or requests for processing descriptions to Wiley Evans (wiley.evans@hakai.org). Researcher institution: Hakai Institute

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Metadata Reference Date(s) October 16, 2018, 22:50 (UTC) (Lastupdate)
Dataset Reference Date(s) September 04, 2018 (Creation)
September 04, 2018 (Publication)
Frequency of Update As Needed

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Field Value
Ocean Variables Other
Scope Dataset
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Topic Category
  • environment
  • geoscientificInformation
  • oceans
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Point of Contact
  • Name: Wiley Evans
    Affiliation: Hakai Institute
    Contact Info Email: data@hakai.org
    Role: Point of Contact
  • Name: Wiley Evans
    Affiliation: Hakai Institute
    Contact Info Email: data@hakai.org
    Role: Point of Contact
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  • Organisation Name / Affiliation: Hakai Institute
    Contact Info Email: data@hakai.org
    Role: Resource Provider
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North Bounding Latitude 50.11496976
South Bounding Latitude 49.70969514
East Bounding Longitude -124.52984083
West Bounding Longitude -125.57747949
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Default Locale English
Citation identifier
Code: http://dx.doi.org/10.21966/1.715
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