units in 2081-2100 relative to 1995-2014, for SSP1-2.6, SSP2-4.5, SSP3-7.0 and SSP5-8.5, respectively . Projected changes in surface pH are relatively uniform in contrast with those of other surface- ocean variables, but they are largest in the Arctic Ocean . Similar declines in the concentration of carbonate ions are projected by Earth system models . The North Pacific, the Southern Ocean and Arctic Ocean regions will become undersaturated for calcium carbonate minerals first . Concurrent impacts on the seasonal amplitude of carbonate chemistry variables are anticipated .
IPCC
Climate Change 2022: Impacts, Adaptation and Vulnerability
IPCC Report