amoc

221d

I remember when as a kid I learned about yeast.

You put yeast in an environment with some sugars, and it will eat the sugars and excrete alcohol until either sugar runs out or alcohol concentration is enough to kill it.

I remember thinking to my 11 or 12 year old self: "wow, yeast is dumb!"

Anyway, completely unrelated:
https://www.science.org/doi/epdf/10.1126/sciadv.adk1189

#ClimateChange #ClimateCrisis #AMOC

Physics- based early warning signal shows that AMOC is on tipping course

René M. van Westen, Michael Kliphuis, Henk A. Dijkstra

One of the most prominent climate tipping elements is the Atlantic meridional overturning circulation (AMOC), which can potentially collapse because of the input of fresh water in the North Atlantic. Although AMOC collapses have been induced in complex global climate models by strong freshwater forcing, the processes of an AMOC tip-ping event have so far not been investigated. Here, we show results of the first tipping event in the Community Earth System Model, including the large climate impacts of the collapse. Using these results, we develop a physics- based and observable early warning signal of AMOC tipping: the minimum of the AMOC- induced freshwater transport at the southern boundary of the Atlantic. Reanalysis products indicate that the present-day AMOC is on route to tipping. The early warning signal is a useful alternative to classical statistical ones, which, when applied to our simulated tipping event, turn out to be sensitive to the analyzed time interval before tipping.

ALT

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