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Major reversal in ocean circulation detected in the Southern Ocean

(www.icm.csic.es)
480 points riffraff | 4 comments | 04 Jul 25 04:52 UTC | HN request time: 0.648s | source
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SwtCyber ◴[04 Jul 25 06:49 UTC] No.44461788[source]▶
If deep water is now rising and releasing centuries of stored CO2, we're talking about a major shift in Earth's climate plumbing. Also wild that this only became visible thanks to a novel satellite processor
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1. geysersam ◴[04 Jul 25 08:44 UTC] No.44462526[source]▶
Why would the deep water have more dissolved CO2 than the surface water?
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2. bo0tzz ◴[04 Jul 25 08:48 UTC] No.44462552[source]▶
The high pressure at depth allows it to dissolve more gas.
3. justonceokay ◴[04 Jul 25 13:42 UTC] No.44464485[source]▶
Exactly the same reason you coke can out-gasses when you open it
4. pfdietz ◴[04 Jul 25 14:06 UTC] No.44464706[source]▶
The Biological Pump. Organic matter created at the surface (by photoplankton and by consumers) falls into the deep ocean, where other biological processes oxidize it back to CO2.

https://en.wikipedia.org/wiki/Biological_pump