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Southern Ocean’s CO2 Balance Threatened by Winds and Melting Ice

10/20/2025

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Summary

Story summary

Alfred Wegener Institute (AWI) reports that the Southern Ocean maintains CO2 absorption capacity due to stratification between deep and surface waters.
This separation is driven by melting-ice-related salinity decline that temporarily keeps CO2-rich waters from rising.
Stronger westerly winds may threaten this balance and could release stored CO2.
Ongoing research aims to monitor these changes and their climate implications.

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Story summary

Alfred Wegener Institute (AWI) reports that the Southern Ocean maintains CO2 absorption capacity due to stratification between deep and surface waters.
This separation is driven by melting-ice-related salinity decline that temporarily keeps CO2-rich waters from rising.
Stronger westerly winds may threaten this balance and could release stored CO2.
Ongoing research aims to monitor these changes and their climate implications.