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Bumps and Ramps in the Glacial CO2 Record

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If you have a question about this talk, please contact Dr Michelle Cain.

Please join us for this lecture in memorial of Harry Elderfield, which will be followed by a reception in the foyer outside the lecture theatre.

Please register (free) to attend this event:

Bumps and Ramps in the Glacial CO2 Record

presented by Wally Broecker (Lamont-Doherty Earth Observatory, Columbia University)

A case will be made that the only times ocean storage of CO2 occurred was during 20kyr duration cold episodes (MIS 2, 4, 6…). This storage was caused either by Atlantic stratification or iron fertilization. In either case, these downward ‘bumps’ were temporary. Once the forcing was removed the CO2 was returned to the atmosphere. These ‘bumps’ modulate a downward ‘ramp’ in atmospheric CO2 content. My tentative conclusion is that they are the result of CO2 input starvation rather than ocean storage

This talk is part of the Cambridge Centre for Climate Science series.

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