AMOC/SMOC slowing and carbon uptake

[alb...@thefarm.org]

Liu, et al, Reduced CO₂ uptake and growing nutrient sequestration from slowing overturning circulation

https://www.nature.com/articles/s41558-022-01555-7

From Abstract: Here using a suite of ESMs, we show that slowing MOC reduces anthropogenic carbon uptake by the solubility pump but increases deep-ocean storage of carbon and nutrients by the biological pump. The net effect reduces ocean uptake of anthropogenic CO₂. The deep-ocean nutrient sequestration will increasingly depress global-scale, marine net primary production over time. MOC slowdown represents a positive feedback that could extend or intensify peak-warmth climate conditions on multi-century timescales.