Changes in the marine carbonate system of the western Arctic: patterns in a rescued data set

A recently recovered and compiled set of inorganic carbon data collected in the Canadian Arctic since the 1970s has revealed substantial change, as well as variability, in the carbonate system of the Beaufort Sea and Canada Basin. Whereas the role of this area as a net atmospheric carbon sink has be...

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Bibliographic Details
Published in:Polar Research
Main Authors: Miller, Lisa A., Macdonald, Robie W., McLaughlin, Fiona, Mucci, Alfonso, Yamamoto-Kawai, Michiyo, Giesbrecht, Karina E., Williams, William J.
Format: Article in Journal/Newspaper
Language:English
Published: Norwegian Polar Institute 2014
Subjects:
Carbonate system
Arctic Ocean
time series
Beaufort Sea
ocean acidification
Arctic
Canada
canada basin
Ocean acidification
Polar Research
Sea ice
Online Access:https://polarresearch.net/index.php/polar/article/view/3205
https://doi.org/10.3402/polar.v33.20577
Description
Summary:A recently recovered and compiled set of inorganic carbon data collected in the Canadian Arctic since the 1970s has revealed substantial change, as well as variability, in the carbonate system of the Beaufort Sea and Canada Basin. Whereas the role of this area as a net atmospheric carbon sink has been confirmed, high pCO2 values in the upper halocline underscore the potential for CO2 outgassing as sea ice retreats and upwelling increases. In addition, increasing total inorganic carbon and decreasing alkalinity are increasing pCO2 and decreasing CaCO3 saturation states, such that undersaturation with respect to aragonite now occurs regularly in both deep waters and the upper halocline.Keywords: Carbonate system; Arctic Ocean; time series; Beaufort Sea; ocean acidification(Published: 26 November 2014)Citation: Polar Research 2014, 33, 20577, http://dx.doi.org/10.3402/polar.v33.20577

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