Twenty-first century ocean warming, acidification, deoxygenation, and upper-ocean nutrient and primary production decline from CMIP6 model projections
CMIP6 models project a worsening of ocean warming, acidification, deoxygenation, and nutrient decline in the 21st century under various emission scenarios, with magnitudes exceeding those projected by CMIP5. The impact on primary production is variable, with declines in some regions and increases in others, accompanied by high inter-model uncertainty.