Research sheds new light on Antarctic control of global climate

Research sheds new light on Antarctic control of global climate
Sea ice and icebergs in the shelf sea environment adjacent to Antarctica. Credit: Mike Meredith, British Antarctic Survey

Scientists have made a new discovery that challenges previous understanding of the relationship between the polar Southern Ocean, next to Antarctica, and carbon dioxide levels in the atmosphere. Their findings show that, contrary to existing assumptions, biological processes far out at sea are the most important factors determining how the ocean absorbs carbon dioxide. The results are published this week in the journal Science Advances.

Carbon dioxide is absorbed in the surface ocean and stored in the deep seas over a timescale of 100s to 1000s years. The Southern Ocean plays a critical role in how this is taken out of the atmosphere and knowing how it functions helps scientists understand dramatic climate transitions in the past, such as the ice ages, and better predict future climate change. It is commonly thought that the transformation of the water from light to dense—caused by cooling at the ocean's surface—is crucial in determining whether carbon is released to the atmosphere or trapped in the deep ocean. As a result, current research is often focused on the shallow seas right next to the Antarctic continent, where most of this transformation takes place.

The team, led by the University of Southampton with British Antarctic Survey, University of East Anglia and the Alfred Wegener Institute in Germany, studied the ocean circulation and carbon concentration of the Weddell Gyre, a region of critical importance for carbon removal from the atmosphere lying east of the Antarctic Peninsula. They studied data collected as part of the ANDREX project (Antarctic Deep water Rates of Export) which measured the physical, biological and chemical properties of the water of the waters in the gyre between 2008 and 2010.

Research sheds new light on Antarctic control of global climate
The ANDREX project message the properties of the Weddell Gyre, east of the Antarctic Penisula. Credit: Mike Meredith, British Antarctic Survey

By studying this data, the team showed that the dominant factor driving the uptake of carbon from atmosphere to ocean is not related to dense water formation in the shallow seas immediately next to Antarctica, but rather to further out to sea. As phytoplankton in the center of the gyre grow then sink, they remove carbon from the surface of the ocean, causing an uptake of carbon dioxide from the atmosphere—a process known as the "biological carbon pump." The data considered in this study showed unambiguously that, in the Weddell Gyre, this is the dominant process enabling the uptake of carbon dioxide from the atmosphere and its removal to the deep ocean.

Graeme MacGilchrist, who led the study for the University of Southampton said: "The results carry implications for our understanding of how the high-latitude Southern Ocean, close to the Antarctic continent, influences atmospheric carbon and global climate on 100 to 1000-year timescales. This is important both for our understanding of climate transitions in the past, such as the ice ages, as well as our projections of future climate change. We also expect that it will help to shift the focus of future research towards the critical processes taking place in the Antarctic Gyres, rather than the historical focus on the shelf-sea regions."

Research sheds new light on Antarctic control of global climate
Collecting water samples from the deep ocean. Credit: Sinhue Torres Valdes, Alfred Wegener Institute

Michael Meredith from British Antarctic Survey said: "The Southern Ocean is a hugely important region for the drawdown of dioxide from the , with major impacts on global climate. This study overturns a commonly-held belief relating to how this works, and emphasizes the need for joined-up biological and physical studies in the open- regions some distance offshore from the Antarctic continent. This will be a key priority going forward, in order to improve our ability to reliably predict future climates."


Explore further

Study finds big increase in ocean carbon dioxide absorption along West Antarctic Peninsula

More information: G.A. MacGilchrist el al., "Reframing the carbon cycle of the subpolar Southern Ocean," Science Advances (2019). DOI: 10.1126/sciadv.aav6410 , advances.sciencemag.org/content/5/8/eaav6410
Journal information: Science Advances

Citation: Research sheds new light on Antarctic control of global climate (2019, August 28) retrieved 17 October 2019 from https://phys.org/news/2019-08-antarctic-global-climate.html
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Aug 28, 2019
So another process affecting climate.

Aug 28, 2019
All this "settled" science is so damn unsettling.
But not to the Chicken Littles, they hunger for their AGW Cult's bullshit.

Gobble up, Chicken Shites.

Aug 28, 2019
@copernicuson.
So another process affecting climate.
The CO2-drawdown process in the Ocean has been included in models. This report merely adds to the knowledge of where and by how much this already known process occurs. This allows us to better understand and target any practical ways to accelerate this drawdown there and elsewhere in the ocean and seas around the globe. Good scientific investigation/work! :)

Aug 28, 2019
@antigoracle.
All this "settled" science is so damn unsettling.
But not to the Chicken Littles, they hunger for their AGW Cult's bullshit.

Gobble up, Chicken Shites.
A paid-for/programmed Russian/GOP/Fossil lobby troll-factory 'weaponised stupid' and/or 'bot' missed the point that scientific investigation produced the result reported above; and that the atmospheric CO2 is the problem. Your 'thirty pieces of silver' and/or 'criminal stupidity programming' doesn't help anyone except the miscreants who pay/program you, @antigoracle. Pity.

Aug 28, 2019
A paid-for/programmed Russian/GOP/Fossil lobby troll-factory 'weaponised stupid' and/or 'bot' missed the point that scientific investigation produced the result reported above; and that the atmospheric CO2 is the problem. Your 'thirty pieces of silver' and/or 'criminal stupidity programming' doesn't help anyone except the miscreants who pay/program you, @antigoracle. Pity.

When you are so stupid, no one will pay, far less weaponize, you.
Pitiful.

Aug 28, 2019
@antigoracle.
A paid-for/programmed Russian/GOP/Fossil lobby troll-factory 'weaponised stupid' and/or 'bot' missed the point that scientific investigation produced the result reported above; and that the atmospheric CO2 is the problem. Your 'thirty pieces of silver' and/or 'criminal stupidity programming' doesn't help anyone except the miscreants who pay/program you, @antigoracle. Pity.

When you are so stupid, no one will pay, far less weaponize, you.
Pitiful.
Do you even realise what you implied there, @antogoracle? You EITHER tacitly admit to being TOO stupid to be 'weaponised' or 'bot-programmed'; OR you tacitly admit to being 'weaponised stupid' and/or 'bot' because you are not as stupid as your 'reject' fellow troll-factory applicants when YOU WERE 'accepted' as 'weaponisationably' and 'bot-programmable' stupid enough. Poor thing, @antigoracle', you damn yourself from your own 'sufficiently-stupid' mouth and/or your own 'sufficiently-stupid' botpost. Pity.

Aug 28, 2019
^^^^^^^^^
LMAO.
I rest my case.

BTW. That's the jackass who claims ice can stop volcanoes.

Aug 28, 2019
@antigoracle.
^^^^^^^^^
LMAO.
I rest my case.

BTW. That's the jackass who claims ice can stop volcanoes.
So removing great weight of cold rock and ice does not let ordinarily 'sleeping' volcanoes 'wake' into activity? No wonder you were 'accepted' for 'weaponised stupid' and/or 'bot' duties, mate; you are 'just stupid enough' to be dangerous to the interests of yourself and your family/descendants in exchange for 'thirty pieces of silver' and an electricity outlet. You are perfect GOP/Russian/Fossil (and now Chinese) mercenary/dupe material, @antigoracle. Pity.

Aug 28, 2019
^^^^^^^^
LMAO.
The jackass who is the only one that enjoys the sound of its braying.

Now you are back on IGNORE.

Aug 28, 2019
@antigoracle.
^^^^^^^^
LMAO.
The jackass who is the only one that enjoys the sound of its braying.

Now you are back on IGNORE.
In your case the ignore function is the last resort of the cowardly scoundrel pretending he has 'won' because he is no longer able to defend his 'weaponised stupidity' and 'bot-poster' activities. Typical stooge/bot. Your paymasters won't be pleased with your abject failure so far, @antigoracle. You might soon need to get an honest job. Good luck. :)

Aug 28, 2019
"The Southern Ocean plays a critical role in how this carbon dioxide is taken out of the atmosphere and knowing how it functions helps scientists understand dramatic climate transitions in the past, such as the ice ages, and better predict future climate change. "

Wha? There was dramatic climate transitions in the past? Ice ages in the past, you say? AND PREDICT FUTURE CLIMATE CHANGE AS WELL?? But we were told that THIS IS IT, and that humans are all going to die within the next 10 (according to Al Gore) years. (Remember his movie?)
10 years went by, and now (according to AOC and some others) everyone will all have died within the next 20-30 years. It wasn't bad enough with Al Gore's Conspiracy Theory in his "An Inconvenient Truth" movie.
And now even RealityCheck is going haywire. Must be something in the air. Chemtrails?

Aug 28, 2019
@S_E_U.
"The Southern Ocean plays a critical role in how this carbon dioxide is taken out of the atmosphere and knowing how it functions helps scientists understand dramatic climate transitions in the past, such as the ice ages, and better predict future climate change. "

Wha? There was dramatic climate transitions in the past? Ice ages in the past, you say? AND PREDICT FUTURE CLIMATE CHANGE AS WELL?? But we were told that THIS IS IT, and that humans are all going to die within the next 10 (according to Al Gore) years. (Remember his movie?)
...
And now even RealityCheck is going haywire. Must be something in the air. Chemtrails?
Learn how to properly parse/comprehend subtle information, mate. Dramatic, in geological terms, can mean over millions of years; whereas current changing is very rapid (over only 100 years). It's this sudden changing transition that will be the killer if we don't reverse the trending destabilisation of 'tolerable' range of temps/patterns. Wake up. :)

Aug 29, 2019
^^^^^^^^
LMAO.
The jackass who is the only one that enjoys the sound of its braying.

Now you are back on IGNORE.

ROFLMAO
Monkeyyyyy, i see you and your socks are getting all frisky on the comment section today, swinging hard to be the first in line to get that banana reward !

Aug 29, 2019
@antigoracle.
^^^^^^^^
LMAO.
The jackass who is the only one that enjoys the sound of its braying.

Now you are back on IGNORE.
In your case the ignore function is the last resort of the cowardly scoundrel pretending he has 'won' because he is no longer able to defend his 'weaponised stupidity' and 'bot-poster' activities. Typical stooge/bot. Your paymasters won't be pleased with your abject failure so far, @antigoracle. You might soon need to get an honest job. Good luck. :)


Wait... you actually meant to imply he has a job ??? This baboon is sitting in his mommies basement with his monkeyclaws dumb thumbing the keyboard everytime the peas inside tries to make rational of the reality we live in. Can you imagine how he'd freak out when he sees the real world outside of this basement ? LOL

Aug 29, 2019
@S_E_U.
"The Southern Ocean plays a critical role in how this carbon dioxide is taken out of the atmosphere and knowing how it functions helps scientists understand dramatic climate transitions in the past, such as the ice ages, and better predict future climate change. "

Wha? There was dramatic climate transitions in the past? Ice ages in the past,

And now even RealityCheck is going haywire. Must be something in the air. Chemtrails?
Learn how to properly parse/comprehend subtle information, mate. Dramatic, in geological terms, can mean over millions of years; whereas current changing is very rapid (over only 100 years). It's this sudden changing transition that will be the killer if we don't reverse the trending destabilisation of 'tolerable' range of temps/patterns. Wake up. :)
SEU is just another antigoracle sockpuppet, that basement must get lonely with all his spooky socks lol

Aug 29, 2019
RealityCheck - we're curious
@antigoracle.
^^^^^^^^
LMAO.
The jackass who is the only one that enjoys the sound of its braying

Now you are back on IGNORE
In your case the ignore function is the last resort of the cowardly scoundrel pretending he has won because he is no longer able to defend his 'weaponised stupidity' and 'bot-poster' activities.

What is this point, RealityCheck?
coming on this phy.org
and telling, antigoracle
he's back on ignore
because
RealityCheck, this presumably means he was on this ignore
as
RealityCheck, this meaneths you heard no evil, saw no evil
so what you thought you saw
you didn't see
because antigoracle was on ignore

are a forgiving chap
constantly giving antigoracle reprieves of his misdemeanours
so you can remove this ignore

so that when antigoracle misbehaves
as antigoracle's tend to do
have this pleasure of scolding these antigoracle's back on to this ignore

Till this next time, RealityCheck, does not this Bridge seem inviting!

Aug 29, 2019
All this "settled" science is so damn unsettling.
But not to the Chicken Littles, they hunger for their AGW Cult's bullshit.


LOL, actually lots of good science being done recently. Application of topologies to climate science is helping to explain the natural variation of climate.

The ocean indices ENSO and the Southern Annular Mode (representing Antarctica region) are closely related
https://geoenergy...-models/


Aug 29, 2019
were these ' scientists' born yesterday ? why do they think [ do they know ] whales go there to feed . and warm water holds less co2 than cold , DuH .
and they need to consider a diagram of what 400 ppm looks like .

Aug 29, 2019
Monkeydooo.... you know Snoozing's going to make you loooose... Again... lol
Did you just understood the self confusing babble you just posted to your sockies?
aaahh what does it matter i know you're competing for the whopper banana...thats why the comment is do dumb... keep it up and i might award you with it ;)

Aug 29, 2019
'' "The Southern Ocean is a hugely important region for the drawdown of carbon dioxide from the atmosphere, with major impacts on global climate. This study overturns a commonly-held belief ''

so they had no idea the ocean there grew plankton ? ? lol
and this small area has a huge impact ? there's your ' the whopper banana '

Aug 29, 2019
No Monkeydoo, desperately scraping for straws won't help you to be disqualified for your prize ;) You can't give bananas back when you've deserved it..now now.
Every single part of the ocean contributes to a major impact on our climate.
Still confusing yourself with your desperate straw arguments ? lol

Aug 29, 2019
Every single part of the ocean contributes to a major impact on our climate

golly, that arguement is ' UGE ! every single teeny weeny part has a magor !! impact !

so when you add them up OMG its ,, just boring

Aug 29, 2019
This comment has been removed by a moderator.

Aug 29, 2019
OMG monkey goracle's socky so desperate for a conversation as no one listens to him, desperately grabbing on a straw that gets him absolutely nowhere...(except for more bananas)
There are 5 oceans dummy the southern ocean is 1 out of 5 oceans not one teeny weeny out of a 100 oceans.

Aug 29, 2019
''1 out of 5 oceans ''

is not being referred to , ie: '' in the Weddell Gyre ''

Aug 29, 2019
Oooh really ???? Oh oh oh... you got another banana for that One congratulations ... ;) That does not matter silly it is a big enough part of it, explaining how it interacts with it's surroundings would make those 2 peas flame out and confuse you even more lol...

Aug 29, 2019
''it is a big enough part of it ''

its 'uge ! not really

https://en.wikipe...ell_Gyre

Aug 29, 2019
@S_E_U.
"The Southern Ocean plays a critical role in how this carbon dioxide is taken out of the atmosphere and knowing how it functions helps scientists understand dramatic climate transitions in the past, such as the ice ages, and better predict future climate change. "

Wha? There was dramatic climate transitions in the past? Ice ages in the past,

And now even RealityCheck is going haywire. Must be something in the air. Chemtrails?
Learn how to properly parse/comprehend subtle information, mate. Dramatic, in geological terms, can mean over millions of years; whereas current changing is very rapid (over only 100 years). It's this sudden changing transition that will be the killer if we don't reverse the trending destabilisation of 'tolerable' range of temps/patterns. Wake up. :)
SEU is just another antigoracle sockpuppet, that basement must get lonely with all his spooky socks lol
says Menelo

I have never been a sock puppet nor have ever owned one.

Aug 29, 2019
@Menelo
If you want to know who IS using sock puppetz, then check out all of the old comments that were made by theghostofotto1923 aka SpookyOtto. He has had dozens of them through the years, and I know this by having read thousands of his comments all the way back to 2010. He had one called 'FrankHerbert' where Otto would go back and forth from one to the other.
I don't know if antigoracle has any puppets, and I don't see why he should.
But I see that YOU get voted up by at least 8 voters, and all of them might be YOUR puppets.
I know that Otto downvotes me as I have disagreed with his comments on 'women having babies until they are killed' which isn't true. He didn't like it that I mentioned that women go through menopause where they can no longer have babies.

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