Chemistry tells us how much CO2 should rise from ocean outgassing with each degree and it is a small fraction of the rise that has actually occurred with the first degree of warming. (judithcurry.com)
bozza @ 354, even emissions at 10 % of current rates would be sufficient to keep on increaseing atmospheric CO2 concentrations, and ergo prevent net ocean outgassing of CO2. (skepticalscience.com)
If there's an excess coming into atmosphere not accounted for by ocean outgassing, or known land / biosphere emissions, or fossil fuels, or boosted northern forest growth (and decay), or permafrost melt, then it's necessary to look for it. (667-per-cm.net)