AMOC
"The scientists’ concern stems from their understanding of thousands of years of the prehistoric climate record. In the past, a great weakening or even shutdown of this arm of the Gulf Stream seems to have triggered rapid changes in temperatures and precipitation patterns around the North Atlantic and beyond.
The northern arm of the Gulf Stream is but one tentacle of a larger, ocean-spanning tangle of currents called the Atlantic Meridional Overturning Circulation, or AMOC. Scientists have strong evidence from ice and sediment cores that the AMOC has weakened and shut down before in the past 13,000 years. As a result, mean temperatures in parts of Europe may have rapidly dropped to about 15 degrees Celsius below today’s averages, ushering in arctic like conditions. Parts of northern Africa and northern South America became much drier. Rainfall may even have declined as far away as what is now China.
And some of these changes may have occurred in a matter of decades, maybe less."
'"In short, the cold blob may signal that the northern arm of the Gulf Stream no longer arrives with the same strength to the North Atlantic. That a warming atmosphere has, paradoxically, cooled one part of the world.
The science remains relatively new, and not everyone agrees the AMOC is actually slowing. But in both scientific modeling of climate change and in the prehistoric record, a North Atlantic cooling presages a shutdown of the current. “One of the hallmarks of a shutdown is this cold blob,” says Dr. de Menocal. “The cold blob is a big deal.”'
https://www.nytimes.com/interactive/202 ... e=Homepage"There is nothing more difficult and more dangerous to carry through than initiating changes. One makes enemies of those who prospered under the old order, and only lukewarm support from those who would prosper under the new."
Fortunately the Euros pretty much stayed onboard expecting or perhaps hoping we would returned to out senses when Trump was gone.
