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Yo_Mama_Been_Loggin

(107,919 posts)
Tue Feb 23, 2021, 08:51 PM Feb 2021

A Major Ocean Current May Be Hurtling Towards Collapse

The ocean may have less time than we thought before massive, irreversible shifts take place. A new study finds that a crucial ocean system may reach its “tipping point” sooner than predicted if the rate of climate change continues at a breakneck pace.

When we talk about climate change, the concept of tipping points is basically adding fuel to the already nightmare fire. Scientists now agree that climate changes could drive crucial systems on our planet to change so much that they reach a tipping point where recovery is impossible and change is inevitable.

One of the most pressing worries scientists have when it comes to tipping points lies underwater. Specifically, the Atlantic meridional overturning circulation, known as the AMOC, which helps shepherd warmer water to the North Atlantic. Among other things, it helps ensure Europe has relatively mild winters given its high latitude. Messing with it could be one of the fastest ways to make not just the region’s but the world’s weather run amok.

In the new study published Monday in the Proceedings of the Natural Academy of Sciences, scientists considered not just the amount of change to the oceans that could precede a tipping point, but also the rate of change. Think of it as the difference between pouring a cup of hot water very slowly into a bucket of cold water versus dumping it in all at once. While the same amount of water is being added both times, the rate at which water is being added is quite different.

https://www.msn.com/en-us/weather/topstories/a-major-ocean-current-may-be-hurtling-towards-collapse/ar-BB1dWPCc?ocid=DELLDHP&li=BBnb7Kz

21 replies = new reply since forum marked as read
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A Major Ocean Current May Be Hurtling Towards Collapse (Original Post) Yo_Mama_Been_Loggin Feb 2021 OP
k&r for visibility. n/t Laelth Feb 2021 #1
This is the kind of stuff that we humans can in no way repair FirstLight Feb 2021 #2
Right.It's called Earth climate dynamics. Can't be slowed or stopped. Earth dynamics are untouchable ancianita Feb 2021 #8
And then there is Senator Snowball...was it Imhofe? thenelm1 Feb 2021 #17
Likely. BUT. Climate don't care about what puny humans do or don't do. We have to get past people ancianita Feb 2021 #20
The coming ice age Fullduplexxx Feb 2021 #3
No, not ice age. Ice UK. Most other places in the world will be burning up. nt SunSeeker Feb 2021 #9
The great burning will cloud the air bringing the ice Fullduplexxx Feb 2021 #21
climate flips happen quick IbogaProject Feb 2021 #4
May already be there zipplewrath Feb 2021 #5
I have been muttering for several years now that what we have to really worry about PoindexterOglethorpe Feb 2021 #6
Me too. More than muttering, but that is what it amounts to. Ferrets are Cool Feb 2021 #7
"The Day After"... great movie ... shitty reality NotHardly Feb 2021 #10
I saw that movie and was frustrated at how bad the science was. PoindexterOglethorpe Feb 2021 #11
Yup. The premise of the movie wnylib Feb 2021 #14
The planet Earth is a dynamic system. Aussie105 Feb 2021 #12
Habitable land and also water supplies. wnylib Feb 2021 #19
...feedbacks or unresolved processes ... taxi Feb 2021 #13
i have been expecting this. pansypoo53219 Feb 2021 #15
F...! JoeOtterbein Feb 2021 #16
The Gulf Stream, which brings warm water northward along the U.S. coast, is a key part of the AMOC. herding cats Feb 2021 #18

FirstLight

(13,360 posts)
2. This is the kind of stuff that we humans can in no way repair
Tue Feb 23, 2021, 09:03 PM
Feb 2021

So much sadness when I think about the MANY thresholds we have crossed over the years. ALready having huge methane bubbles "popping" out of the permafrost, etc..

This planet is a bigger and more intricate system than we can scratch the surface of knowing... and yet humans have managed to fuck it up royally

ancianita

(36,023 posts)
8. Right.It's called Earth climate dynamics. Can't be slowed or stopped. Earth dynamics are untouchable
Tue Feb 23, 2021, 10:58 PM
Feb 2021

thenelm1

(852 posts)
17. And then there is Senator Snowball...was it Imhofe?
Tue Feb 23, 2021, 11:36 PM
Feb 2021

Another mental midget that claims "fake news" based on a local occurrence. We're all doomed.

ancianita

(36,023 posts)
20. Likely. BUT. Climate don't care about what puny humans do or don't do. We have to get past people
Tue Feb 23, 2021, 11:45 PM
Feb 2021

being a drag on us. Seriously. Let's not deal with the drama of political inertia and denial anymore.

To keep recriminating the arrogant ignorant makes us feel good but we waste our energy on that after awhile.

We have to channel our attention to team up with those who drive for huge scaled up projects.
Slowing Earth dynamics is going to take every bit of wealth (quadrillions) and effort (land, air, water) of humans. Just to give our descendants a livable future.

This is a call to search for those high level agency bioengineers people.

Let's not waste any more energy on chimps.



IbogaProject

(2,804 posts)
4. climate flips happen quick
Tue Feb 23, 2021, 09:20 PM
Feb 2021

a great deal of excellent work has been done on climate history, and the switches happen very quickly and some have been enormous temperature shifts globally. A big one 300 Million years ago happened over a dozen years and the earth shifted 20 degrees Fahrenheit warmer average temperature. If this happens now a majority of habitable areas will be deadly some times of the year.

this guy a pseudonym for a Rutgers University climate scientist covers the oncoming climate collapse in detail. artic-news

zipplewrath

(16,646 posts)
5. May already be there
Tue Feb 23, 2021, 09:24 PM
Feb 2021

One of the more horrible realities is that as good as the models have been, and dead on accurate the predictions have been, they basically have always underestimate the impacts. This usually happens because they didn't know, or think of, secondary and tertiary effects such as carbon dioxide release from frozen glaciers and tundra. With respect to these sea flows, they may not fully understand how to account for massive amounts of melted, and fresh, water entering the north Atlantic.

PoindexterOglethorpe

(25,841 posts)
6. I have been muttering for several years now that what we have to really worry about
Tue Feb 23, 2021, 09:33 PM
Feb 2021

is a change in, or complete shutdown of various ocean currents. That would have a HUGE impact on climate.

Ferrets are Cool

(21,106 posts)
7. Me too. More than muttering, but that is what it amounts to.
Tue Feb 23, 2021, 10:55 PM
Feb 2021

All I can do is complain. We are and so is most of the life on Earth.

wnylib

(21,430 posts)
14. Yup. The premise of the movie
Tue Feb 23, 2021, 11:33 PM
Feb 2021

was that the fresh water melt from glaciers into the Atlantic would cause the Gulf Stream to cool and bring on an ice age for northern Europe and northern North America.

Scientifically it was off, and way oversimplified.

But the film showed 3 superstorms coalescing over the North Atlantic. A few years ago, when Superstorm Sandy occurred, I had an eerie feeling that maybe the movie was not as far off as I had thought. I rented the movie to watch it again.

Even as bad as the film was scientifically, it does appear that the Gulf stream WILL cool off and Europe WILL have a colder climate.

Aussie105

(5,377 posts)
12. The planet Earth is a dynamic system.
Tue Feb 23, 2021, 11:14 PM
Feb 2021

A system made up of many factors.
Currently it is mostly predictable, but it's not stable. We have the 4 seasons because the Sun's energy available at any one spot varies due to the tilt of the Earth's axis.

A new equilibrium is sought if any factors are changed. Most important factor, the energy in the system. Increase that, by trapping more energy from the Sun, and who knows what will happen?


The equilibrium will stabilize into new patterns.
It's just that humans may not like where that seeking of equilibrium takes the habitability of some parts of the planet.

Will the next world war be fought over habitable land?


wnylib

(21,430 posts)
19. Habitable land and also water supplies.
Tue Feb 23, 2021, 11:43 PM
Feb 2021

With rising temperatures, more land will become dryer. Streams, creeks, and lakes will dry up in some places. Fighting over water access will be a problem. Also, as ocean levels rise and islands and shores disappear, more people will seek to migrate inland.

Lots of geopolitical turmoil to come from these changes.

taxi

(1,896 posts)
13. ...feedbacks or unresolved processes ...
Tue Feb 23, 2021, 11:19 PM
Feb 2021

“Bottom line is I think this study is important and points out the complex dynamics inherent in our climate system,” Sutherland said. “I’m worried by the details (though I’m sure some reviewers were, too), and think there could be other climate feedbacks or unresolved processes that might change their results, if not their ultimate conclusions.”


Sounds like he's saying that other things could make this look like a big nothing. Weather events around the world are ignored by our media, they cover major disasters on a sliding scale. We can't control Texas, no less the planet.

JoeOtterbein

(7,700 posts)
16. F...!
Tue Feb 23, 2021, 11:36 PM
Feb 2021

We've been predicting this for years. Europe is even more f......

Sorry, for using foul language. But this news deserves it, more now than any other time.

S...!

herding cats

(19,564 posts)
18. The Gulf Stream, which brings warm water northward along the U.S. coast, is a key part of the AMOC.
Tue Feb 23, 2021, 11:42 PM
Feb 2021

We're all impacted by this along the Atlantic and its related flows.

Our marine life will suffer the hardest losses first, but none of us will escape. Times have changed and we're now on a different path which we helped create.

It's the first time in the history of the earth we're experiencing a climatic episode such as this with a species intelligent enough to understand what's taking place. Not that it ultimately mattered much, but it's still true and interesting.

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