“…Extrapolating to the global ocean is tenuous with limited data, but to illustrate the potential scale of enhanced CO 2 storage during the LGP, we note that most of the deep Pacific (Figure 4a and Jaccard & Galbraith, 2012), Atlantic (Hoogakker et al, 2015) and Southern Oceans (Francois et al, 1997;Jaccard et al, 2016) held substantially more respiratory CO 2 (i.e., had lower DO) during the LGP (see also de la Fuente et al, 2017;Sarnthein et al, 2013;Skinner et al, 2015;Skinner et al, 2017). Partially offsetting this enhanced deep-sea CO 2 storage, the surface ocean, in equilibrium with atmospheric CO 2 at 180 to 200 ppm, would have held less dissolved carbon than today.…”