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

Polar Research

Alfonso Mucci¹  Lisa A. Miller²  Fiona McLaughlin²  Robie W. Macdonald²  William J. Williams²  Michiyo Yamamoto-Kawai³  Karina E. Giesbrecht⁴ 

[1] Geotop and Department of Earth and Planetary Sciences, McGill University, Montreal, Quebec H3A 2A7, Canada;Institute of Ocean Sciences, Fisheries and Oceans Canada, Sidney, British Columbia V8L 4B2, Canada;Research Center for Advanced Science and Technology, Tokyo University of Marine Science and Technology, Tokyo, Japan;School of Earth and Ocean Sciences, University of Victoria, Victoria, British Columbia V8P 5C2, Canada;

关键词: Carbonate system;    Arctic Ocean;    time series;    Beaufort Sea;    ocean acidification;   

DOI  :  10.3402/polar.v33.20577

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown