The Antarctic overturning will slow
This doesn’t sound good at all.
Deep ocean currents around Antarctica headed for collapse, study finds
Cold water that sinks near Antarctica drives the deepest flow of the overturning circulation—a network of currents that spans the world’s oceans. The overturning carries heat, carbon, oxygen and nutrients around the globe. This influences climate, sea level and the productivity of marine ecosystems.
“Our modeling shows that if global carbon emissions continue at the current rate, then the Antarctic overturning will slow by more than 40 percent in the next 30 years—and on a trajectory that looks headed towards collapse,” says Prof England.
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With a collapse of this deep ocean current, the oceans below 4000 meters would stagnate.
“This would trap nutrients in the deep ocean, reducing the nutrients available to support marine life near the ocean surface,” says Prof England.
So everything that lives on the nutrients will starve, so everything that lives on everything that lives on the nutrients will starve. I have a feeling that’s a lot of animals, including human ones.
I guess we’ll all have to eat cake.
Today I learned that due to gravity, accelerated Antarctic Ice Melt leads to a greater ocean level rise in the northern than southern hemisphere. So, Desantis will need to move to Washington whether he is elected or not.
Indeed. The point being that all that ice pulls on the ocean’s water by gravity. If the ice melts, that mass is distributed all over the oceans, so the effect is essentially nullified.
I have read that, for the same reason, if the entire Greenland ice sheets melts, sea levels where I live (in Norway) will actually drop rather than rise. Trying to confirm that calculation is still on my “to do” list.
The world is a strange place indeed. Counter-intuitive effects happen all over the place.
Cutting fossil fuel use over the last few decades would have been better, but maybe we need to use this proposal for sulfate clouds in the arctic (and and antarctic) as well as drastic cuts to fossil fuel use now.
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2022EF003052?af=R
Here is another article on the idea
https://phys.org/news/2022-09-refreezing-earth-poles-feasible-cheap.html