This timing has been called into question by recently published research.
New constraints on the gas age-ice age difference along the EPICA ice cores, 050 kyr. (PDF)
Smoke doesn’t cause fire.
Your link relates to a surface-based study of the Antarctic and was published 6 months ago; now we need a study to incorporate both sets of data; a process like this can go on as long as the funding lasts.
And no solution comes forth, just the same old “Turn out the lights...”
Thank you for that paper. Still raising the bar I see :0)
It looks like the authors have found a probable miscalibration in gas chronology techniques, using a known Be10 peak and a better-than-previously characterised CH4 peak.
One of the probable results is that the Temperature-then-CO2 lag isn’t 800+- 600 yrs, but something smaller. So the Vostok lines should get closer together.