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(CTV News)   Intergalactic Planetary Arctic Acidic   (ctvnews.ca) divider line
    More: Sad, Water, Ocean, Arctic Ocean, Carbon dioxide, Carbonic acid, Global warming, Arctic, PH  
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553 clicks; posted to STEM » on 30 Sep 2022 at 7:55 AM (8 weeks ago)   |   Favorite    |   share:  Share on Twitter share via Email Share on Facebook



9 Comments     (+0 »)
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2022-09-30 6:54:46 AM  
Probably due to less fresh water flows into that sea?

/Best I can come up with.
 
2022-09-30 6:59:51 AM  

AirForceVet: Probably due to less fresh water flows into that sea?

/Best I can come up with.


Gasses are more soluble the colder the water is, so that may be a factor here.
 
2022-09-30 8:00:37 AM  

incendi: AirForceVet: Probably due to less fresh water flows into that sea?

/Best I can come up with.

Gasses are more soluble the colder the water is, so that may be a factor here.


That might explain differences in equilibrium acidity, but wouldn't explain why the Arctic, which is warming faster than other regions, is acidifying faster.

TFA provides the explanation(s):

In the end, said Cai, it comes down to sea ice loss.

Historically, Arctic waters have been lower in carbon dioxide because as recently as the 1990s they were covered with sea ice most, if not all, of the year. That's no longer true.

"Initially, there was no atmospheric contact," Cai said. "Now you have atmospheric contact."

In effect, Arctic waters are playing catch-up with the other oceans, where the carbon dioxide content is growing at the same pace it is in the air.

As well, the volume of that ice melt is creating a layer of relatively fresh water atop the Canada Basin. Because that water isn't as dense as saltier water, it tends to float on the surface and concentrate the acidity.

Finally, that fresher water also tends to counteract ions that lend alkalinity, emphasizing acidification.
 
2022-09-30 8:12:02 AM  

Ambitwistor: incendi: AirForceVet: Probably due to less fresh water flows into that sea?

/Best I can come up with.

Gasses are more soluble the colder the water is, so that may be a factor here.

That might explain differences in equilibrium acidity, but wouldn't explain why the Arctic, which is warming faster than other regions, is acidifying faster.

TFA provides the explanation(s):

In the end, said Cai, it comes down to sea ice loss.

Historically, Arctic waters have been lower in carbon dioxide because as recently as the 1990s they were covered with sea ice most, if not all, of the year. That's no longer true.

"Initially, there was no atmospheric contact," Cai said. "Now you have atmospheric contact."

In effect, Arctic waters are playing catch-up with the other oceans, where the carbon dioxide content is growing at the same pace it is in the air.

As well, the volume of that ice melt is creating a layer of relatively fresh water atop the Canada Basin. Because that water isn't as dense as saltier water, it tends to float on the surface and concentrate the acidity.

Finally, that fresher water also tends to counteract ions that lend alkalinity, emphasizing acidification.


Ah, yep, that checks out. Losing the ice sheet is the major factor (diffusion of co2 through feet of ice must be pretty negligible or ice cores wouldn't yield useful historical data about the atmosphere), the (relatively) fresh water from that ice melt having less buffering capacity is an interesting icing on the cake.
 
2022-09-30 8:20:49 AM  
Such acidization could turn sediment on Arctic Ocean floor into hard floor
 
2022-09-30 9:09:32 AM  
I thought it was some new beer atrocity.
 
2022-09-30 9:25:51 AM  

LewDux: Such acidization could turn sediment on Arctic Ocean floor into hard floor


New Order - Blue Monday (Hardfloor Remix) official video
Youtube 70DFLdVAizE
 
2022-09-30 9:58:04 AM  
Well, acid rain could not acidfy the oceans so they have to find something else.
 
2022-09-30 1:09:23 PM  
This is another dimension of climate change.

/another dimensionanother dimension...
 
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