@StarkRG @Brad_Rosenheim
In 2015, @rahmstorf and Thornalley in 2018 did #AMOC reconstructions of over 1ky from different proxies. And both start the rapid decline 1850. #Thornalley 's study was about warmwater #ocean creatures moving up to Iceland and some other stuff in the Labrador Sea. Don't recall what Rahmstorf's proxies were. But his data before 1800 is matches tree ring widths from Sweden and UK. Maybe those were his proxies, dunno.
Thornalley's paper is open access and Ext Fig 7 shows the early onset of the rapid slowdown https://www.nature.com/articles/s41586-018-0007-4/figures/7
You can download and plot both from this repository of Caesar's 2021 paper https://github.com/ncahill89/AMOC-Analysis
Just wanted to say, the Caribbean isn't the only "one location" where warming kicked in due to CO2 from #LandUseChange alone before fossil fuels contributed to #CO2 growth.
LandUseChange in the 1610-event and in the WW2-event due to population decline in the Americas, and Europe and China respectively, made AMOC hickup bigly, I think.