@rahmstorf
Thanks. Also reading that new #OpenAccess paper by #RenevanWesten on #AMOC simulation https://www.science.org/doi/10.1126/sciadv.adk1189
Their slow freshwater forcing that lead to collapse after 1750 years lets me think of #MIS11 , the very long interglacial 420thsd years ago, and of last year's paper where they had found a plant leaf at the bottom of the ice core in West #Greenland , indicating that it was ice free some time during MIS11.
Shouldn't that freshwater input combined with , I assume, precipitation changes similar to today's due to similar temperatures, also have lead to AMOC collapse? And which proxy would tell us if that was the case? What may have endured in London or Bergen for 420ky that still tells that story?
But what I know of global MIS11, AMOC didn't collapse, and Earth noving to the next ice age was a slow escalator, not a clear slide like I'd expect from after a AMOC collapse.

I haven't learned much yet on Heinrich events. But the new paper also creates the impression that AMOC is also sensitive to relatively fast temperature changes when Earth is racing out of a glacial and changes her rain patterns everywhere, over ocean and land, while not at all reaching today's temperatures nor the rate of change.
Must read some stuff on Heinrich, Dansgar etc. Intruiging.