Contrasting drivers and trends of ocean acidification in the subarctic Atlantic.

ABSTRACT: The processes of warming, anthropogenic CO₂ (C_anth) accumulation, decreasing pH_T (increasing [H⁺]_T; concentration in total scale) and calcium carbonate saturation in the subarctic zone of the North Atlantic are unequivocal in the time-series measurements of the Iceland (IS-TS, 1985-2003) and Irminger Sea (IRM-TS, 1983-2013) stations. Both stations show high rates of C_anth accumulation with different rates of warming, salinification and stratification linked to regional circulation and dynamics. At the IS-TS, advected and stratified waters of Arctic origin drive a strong increase in [H⁺]_T, in the surface layer, which is nearly halved in the deep layer (44.7 ± 3.6 and 25.5 ± 1.0 pmol kg^-1 yr

SUBMITTER: Perez FF 

PROVIDER: S-EPMC8263757 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature