Negative carbon emissions to fight ocean acidification?

  • #1
gildomar
99
2
The IPCC report strongly encouraged not only trying to get our carbon dioxide emissions down to fight climate change, but to go into negative emissions so as to draw the carbon dioxide out of the air (since it's too high as it is). Wouldn't that help to fight ocean acidification too?

Because from what I understand, the carbon dioxide content of the atmosphere and the ocean are in pseudo-equilibrium (if they weren't there'd be a lot more CO2 in the air, given that some of it diffuses into the ocean). So with negative emissions then, if the concentration of CO2 in the air was lowered (by whatever method) relative to the concentration in the ocean, wouldn't that would cause the diffusion to go the other way so as to maintain equilibrium? The carbon dioxide would come out of solution in the ocean to be taken up by the atmosphere (and then captured via whatever method used to get negative emissions). Of course, if so, that means that we would need to have negative emissions then for longer than initially thought, since we'd be drawing down the carbon content of not only the atmosphere, but the ocean too.

(Posting in the physics section as opposed to the chemistry section since the question is mainly about diffusion, a physical process as opposed to a chemical one. If in error on where to post, feel free to point to where it should go.)
 

Answers and Replies

  • #2
36,242
13,291
The oceans are quite a bit away from an equilibrium with today's atmosphere. It would slow ocean acidification unless we take out much more CO2 than current plans hope for.
 
  • #3
zanick
378
22
raise ocean temps, oceans will release C02 ;)
 
  • #4
sophiecentaur
Science Advisor
Gold Member
27,805
6,323
raise ocean temps, oceans will release C02 ;)
That's a bit of a two edged sword though. (is the word 'temperatures' too long to type?)
 

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