The Paris Agreement of 2015 remarkably brought together all of the nations of the world, except for the United States after Trump cancelled, in a concerted effort to combat the dire consequences of global warming, which on a worst-worst-worst case basis could lead to human extinction; although, not many climate scientists discuss that possibility.
But, it really could happen.
But then again, when?
Meanwhile, the Paris Agreement is constantly being scrutinized because it is well understood that if the science about the timing of not exceeding 1.5C, or maybe 2C, is correct, then humanity doesn’t have many shots, or much time, at fixing this monster before it grows totally out of control, and then human extinction will reluctantly need to be factored into climate models… for the first time ever! Nobody wants that to happen.
Meantime, climate complexities, as they relate to the Agreement, are starting to throw poisoned darts at Paris/2015 and hitting bull’s-eyes.
After all, since the very beginning, the Agreement was not on solid footing, as for example: Dr. James Hansen, one of the world’s foremost climate scientists, “nailed it” when, immediately on the heels of the climate accord, he said:
“It’s a fraud really, a fake. It’s just bullshit….”
The famous or infamous, depending upon one’s viewpoint, Paris Agreement uses “linear relationships” in calculating cumulative CO2 emissions and global temps with the goal of holding temp increases to less than 2C vis-à-vis pre-industrial but preferably below 1.5C. Otherwise, all hell breaks loose. Disconcertingly, some climate scientists take issue with the data assumptions in Paris/2015, as way too timid. (See Postscript for alarming current status report on atmospheric CO2)
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