So Global Warming? Or not?

[XCR1250]

SubscribeSign In

 

Study warns of 'irreversible transition' in ocean currents that could rapidly freeze parts of North America

 

DOYLE RICE | USA TODAY | 28 minutes ago

   

STORY HIGHLIGHTS

 

• If the current system collapses, it would lead to dramatic changes in worldwide weather patterns.

• If this circulation shuts down, it could bring extreme cold to Europe and parts of North America.

• "It’s one of those events that should not happen, and we should try all that we can to reduce greenhouse gas emissions as quickly as possible."

 

There are realistic ways to reverse or slow down climate change, and scientists made it simple by choosing four of the best.

BUZZ60

A large system of ocean currents in the Atlantic – which includes the Gulf Stream – has been disrupted due to human-caused climate change, scientists reported in a new study published Thursday. If that system collapses, it would lead to dramatic changes in worldwide weather patterns.

The Atlantic Meridional Overturning Circulation, or AMOC, transports warm, salty water from the tropics northward at the ocean surface and cold water southward at the ocean bottom.

“The Atlantic Meridional Overturning really is one of our planet’s key circulation systems,” said the author of the study, Niklas Boers from the Potsdam Institute for Climate Impact Research in Germany.

Findings from a similar 2018 study drew comparisons to the scientifically inaccurate 2004 disaster movie “The Day After Tomorrow,” which used such an ocean current shutdown as the premise of the film. At the time, study authors said a collapse was at least decades away but would be a catastrophe.

A potential collapse of this ocean current system would have severe consequences around the globe, authors of the new study said.

If this circulation shuts down, it could bring extreme cold to Europe and parts of North America, raise sea levels along the U.S. East Coast and disrupt seasonal monsoons that provide water to much of the world, the Washington Post said. 

It would also further endanger the Amazon rainforest and Antarctic ice sheets, according to the Guardian. 

Researchers who study ancient climate change have also uncovered evidence that the AMOC can turn off abruptly, causing wild temperature swings and other dramatic shifts in global weather systems, the Post said.

August 3: There's a 'dead zone' in the Gulf of Mexico this summer that's bigger than Connecticut

July 20: What is La Niña? Does it bring more snow? How climate pattern could affect US weather.

The study was published Thursday in the peer-reviewed British journal Nature Climate Change.

Climate models have shown that the AMOC is at its weakest in more than 1,000 years, Reuters reported. However, it has not been known whether the weakening is due to a change in circulation or the loss of stability.

A beachgoer walks along the water as waves crash in Manasquan, N.J. A large system of ocean currents in the Atlantic – which includes the Gulf Stream – has been disrupted due to human-caused climate change, scientists reported in a new study published Thursday.

JULIO CORTEZ, AP IMAGES

"The difference is crucial," said Boers, "because the loss of dynamical stability would imply that the AMOC has approached its critical threshold, beyond which a substantial and in practice likely irreversible transition to the weak mode could occur."

By studying key data from the AMOC, scientists determined that the recent weakening is likely linked to a loss of stability: "The findings support the assessment that the AMOC decline is not just a fluctuation or a linear response to increasing temperatures but likely means the approaching of a critical threshold beyond which the circulation system could collapse," Boers said.

The study said that a number of factors are likely important for the disruption of the AMOC – factors that add to the direct effect that the warming of the Atlantic Ocean has on its circulation. These include freshwater inflow from the melting of the Greenland ice sheet, melting sea-ice, increasing precipitation and river run-off.

 

Freshwater is lighter than saltwater and reduces the tendency of the water to sink from the surface to greater depths, which is one of the drivers of the overturning.

Other climate models have said the AMOC will weaken over the coming century but that a collapse before 2100 is unlikely, Reuters said.

Levke Caesar, at Maynooth University in Ireland, who was not involved in the research, told the Guardian: “The study method cannot give us an exact timing of a possible collapse, but the analysis presents evidence that the AMOC has already lost stability, which I take as a warning that we might be closer to an AMOC tipping than we think.”

Study lead author Boers told the Post that "it’s one of those events that should not happen, and we should try all that we can to reduce greenhouse gas emissions as quickly as possible. This is a system we don’t want to mess with."

[Edmo]

Sounds like more fear mongering to me. Why is the sky always falling in these studies? Hmmmm.

[800renegaderider]

Extreme cold sweet maybe southern NH will finally get a good riding season. Bring it on baby

[CFM]

I screenshot’d tbis the other day , July 30th, and posted ot someehere else on this site:

 

 

Edited August 6, 2021 by CFM

[steve from amherst]

SO global warming is fixing itself?

[Zambroski]

I’m getting the vax.

[Stephen Hawking]

Whoever wrote that must have just watched "The Day After Tomorrow"

[Mag6240]

1 hour ago, Stephen Hawking said:

Whoever wrote that must have just watched "The Day After Tomorrow"

Exactly what came to mind for me as well....

[Highmark]

 

 

[Zambroski]

10 minutes ago, Highmark said:

 

 

 the first 45 seconds of that following an ominous music intro was epic.  Even now, libtwats would shit their pants after watching it.

”If we are prepared for the next ice age, the result could be starvation and death!!!!”

ahahhahahhaa ahhahahahhahahahahahahahhaha abahahhahahahhahahabbah!!!!!!!
 

[01mxz800]

1st we are going to burn to death now we could freeze solid wtf 

[Highmark]

5 minutes ago, Zambroski said:

 the first 45 seconds of that following an ominous music intro was epic.  Even now, libtwats would shit their pants after watching it.

”If we are prepared for the next ice age, the result could be starvation and death!!!!”

ahahhahahhaa ahhahahahhahahahahahahahhaha abahahhahahahhahahabbah!!!!!!!
 

I'd love a little mini ice age.    

[Catalina]

Nothing unusual about 33 degrees at the top of Mt Washington. I was up there a few years ago in September, there was a bit of snow on the ground. Year before that, we wanted to drive the auto road to the top. Columbus Day (Do we still call it that??), top part was closed due to snow on the road. 

I think that most years, it is not unusual to get a bit of snow there every month. The weather is wild up there for sure. 

 

https://www.mountwashington.org/experience-the-weather/mount-washington-weather-archives/normals-means-and-extremes.aspx

[nacapster]

Natural solar cycles drive natural oceanic cycles which drive the climate. Human activity has little if anything to do with it. 

[Zambroski]

25 minutes ago, Highmark said:

I'd love a little mini ice age.    

Me too!  Gotta find me a sled first tho!!! 

I wouldn’t mind seeing a little food shortage and some famine here too.  Just to see what these big city big mouths are made of when they have to eat each other when their constant supply of outside shipped sustenance is interrupted.

 

[Zambroski]

13 minutes ago, nacapster said:

Natural solar cycles drive natural oceanic cycles which drive the climate. Human activity has little if anything to do with it. 

Fuck off.

[jtssrx]

They are trying to scare people with the day after tomorrow story line. Side note Antarctica has just recorded its 7 highest ice extent since they started taking satellite readings. I also so a chart that showed greenland losing almost zero ice or snow extent this summer

[Highmark]

12 minutes ago, jtssrx said:

They are trying to scare people with the day after tomorrow story line. Side note Antarctica has just recorded its 7 highest ice extent since they started taking satellite readings. I also so a chart that showed greenland losing almost zero ice or snow extent this summer

Not exactly how you can post anything regarding satellite data.   Honestly if we can't go to space how do we know what the ice extent is at the poles?

Edited August 6, 2021 by Highmark

[XCR1250]

2 hours ago, nacapster said:

Natural solar cycles drive natural oceanic cycles which drive the climate. Human activity has little if anything to do with it. 

Shhhhhh

[jtssrx]

2 hours ago, Highmark said:

Not exactly how you can post anything regarding satellite data.   Honestly if we can't go to space how do we know what the ice extent is at the poles?

They use balloons 🎈 the space shuttle and anything they call a satellite is in low earth orbit

Edited August 6, 2021 by jtssrx

[Highmark]

15 minutes ago, jtssrx said:

They use balloons 🎈 the space shuttle and anything they call a satellite is in low earth orbit

Most objects man puts in space are in LEO including the ISS.....I know, I know they CGI all the pictures.....except of the ice.   

   

[jtssrx]

5 hours ago, Highmark said:

Most objects man puts in space are in LEO including the ISS.....I know, I know they CGI all the pictures.....except of the ice.   

   

The ISS lmao. You are gullible 

[Stephen Hawking]

6 hours ago, jtssrx said:

They use balloons 🎈 the space shuttle and anything they call a satellite is in low earth orbit

What are they orbiting? 

 

orbit

 noun (2)

Definition of orbit (Entry 2 of 3)

1a: a path described by one body in its revolution about another (as by the earth about the sun or by an electron about an atomic nucleus)also : one complete revolution of a body describing such a path

b: a circular path

2: a range or sphere of activity or influencewithin the president's orbit

orbit

 verb

orbited; orbiting; orbits

Definition of orbit (Entry 3 of 3)

transitive verb

1: to revolve in an orbit around : CIRCLE

2: to send up and make revolve in an orbitorbit a satellite

[jtssrx]

24 minutes ago, Stephen Hawking said:

What are they orbiting? 

 

orbit

 noun (2)

Definition of orbit (Entry 2 of 3)

1a: a path described by one body in its revolution about another (as by the earth about the sun or by an electron about an atomic nucleus)also : one complete revolution of a body describing such a path

b: a circular path

2: a range or sphere of activity or influencewithin the president's orbit

orbit

 verb

orbited; orbiting; orbits

Definition of orbit (Entry 3 of 3)

transitive verb

1: to revolve in an orbit around : CIRCLE

2: to send up and make revolve in an orbitorbit a satellite

They orbiting your brain

[jdsky]

Of course the ice has to be increasing.  How else would NASA maintain that giant ice wall that nobody has ever seen?

NASA likely was in on the development of these to maintain the ice wall.  Truck ice South then bring coke back North.