Geochemical records from ocean sediment cores are used to shed light on the composition and ventilation of water in the deep North Pacific during the Last Glacial Maximum. A poorly-ventilated water mass that was rich in respired carbon dioxide occupied the North Pacific abyss during the Last Glacial Maximum, and that ventilation of the abyss increased during deglaciation, releasing carbon dioxide into the atmosphere.
- Eric D. Galbraith
- Samuel L. Jaccard
- Roger Francois
