Dataset: Raw pH data acquired during the pH internal consistency experiment.

ValidatedFinal no updates expectedDOI: 10.26008/1912/bco-dmo.905235.1Version 1 (2023-07-28)Dataset Type:experimental

Principal Investigator, Contact: Ryan Woosley (Massachusetts Institute of Technology)

BCO-DMO Data Manager: Karen Soenen (Woods Hole Oceanographic Institution)

Project: Improving Accuracy and Precision of Marine Inorganic Carbon Measurements (Inorganic Carbon Meaurements)

Abstract

These data include the measured pHt, total alkalinity, dissolved inorganic carbon, raw pHt absorbance, and calculated pHt of 25 batches of seawater as a function of temperature, salinity, and pCO2. These data were used to evaluate the internal consistency of 120 different possible combinations of CO2 system constants. The marine inorganic carbon system can be calculated with two measured parameters due to thermodynamic relationships. However, there are many different parameterizations for the...

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Oligotrophic Atlantic surface seawater was collected from 39° 46.406′ N and 70° 53.065′ W on October 10, 2019.

The surface seawater was modified to five different salinities and 5 different pCO2 values for a total of 25 batches. Salinity was modified through dilution or evaporation. pCO2 was modified by bubbling CO2 gas of different pCO2 concentrations (balance air).

The water was then bottled and sealed into 250 mL borosilicate glass bottles following SOPs (Dickson et al. 2007). Each batch consisted of 44 bottles.

Related Datasets

IsRelatedTo
Dataset: pH internal Consistency Experiment: TA & DIC
Relationship Description: Data is part of the same experiment.
Woosley, R. (2023) Total alkalinity and dissolved inorganic carbon data measured during the pH internal consistency experiment. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-07-31 doi:10.26008/1912/bco-dmo.905278.1
IsSourceOf
Dataset: pH internal Consistency Experiment: Measured pH and nutrients
Relationship Description: Contains raw data as basis for the summary table.
Woosley, R. (2023) Measured pH and nutrient data acquired during the pH internal consistency experiment. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-08-01 doi:10.26008/1912/bco-dmo.905357.1

Related Publications

Results
Woosley, R. J., & Moon, J.-Y. (2023). Re-evaluation of carbonic acid dissociation constants across conditions and the implications for ocean acidification. Marine Chemistry, 250, 104247. https://doi.org/10.1016/j.marchem.2023.104247
Methods
Dickson, A.G.; Sabine, C.L. and Christian, J.R. (eds) (2007) Guide to best practices for ocean CO2 measurement. Sidney, British Columbia, North Pacific Marine Science Organization, 191pp. (PICES Special Publication 3; IOCCP Report 8). DOI: https://doi.org/10.25607/OBP-1342
Methods
Liu, X., Patsavas, M. C., & Byrne, R. H. (2011). Purification and Characterization of meta-Cresol Purple for Spectrophotometric Seawater pH Measurements. Environmental Science & Technology, 45(11), 4862–4868. doi:10.1021/es200665d
Methods
Woosley, R. J. (2020). Evaluation of the temperature dependence of dissociation constants for the marine carbon system using pH and certified reference materials. Marine Chemistry, 103914. doi:10.1016/j.marchem.2020.103914

Woosley, R. (2023) Raw pH data acquired during the pH internal consistency experiment.. Biological and Chemical Oceanography Data Management Office (BCO-DMO). (Version 1) Version Date 2023-07-28 [if applicable, indicate subset used]. doi:10.26008/1912/bco-dmo.905235.1 [access date]

Terms of Use

This dataset is licensed under Creative Commons Attribution 4.0.


If you wish to use this dataset, it is highly recommended that you contact the original principal investigators (PI). Should the relevant PI be unavailable, please contact BCO-DMO (info@bco-dmo.org) for additional guidance. For general guidance please see the BCO-DMO Terms of Use document.

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Funded by the U.S. National Science Foundation