What exactly does a “point of no return” mean for Earth and its inhabitants? The researchers describe “a threshold which, once surpassed, fundamentally changes the dynamics of the climate system,” including “by triggering irreversible processes like melting of the permafrost, drying of the rainforests, or acidification of surface waters.”
The researchers used a computer model called ESCIMO to simulate outcomes from various levels of CO2 reductions until the year 2500. They concluded that even an immediate reduction to zero greenhouse emissions would still result in a 3°C rise in global temperatures by 2500.
https://consortiumnews.com/2020/11/13/climate-point-of-no-return/
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