Deep ocean oxygen levels are affected by sea ice • Earth.com – Earth.com

During the last ice age, extensive sea ice prevented oxygen from reaching waters in the deep ocean. This interference complicated the relationship between oxygen and carbon, according to a new study from Oregon State University.
“The sea ice is effectively like a closed window for the ocean,” said study co-author Andreas Schmittner. “The closed window keeps fresh air out; the sea ice acted as a barrier to keep oxygen from entering the ocean, like stale air in a room full of people. If you open the…

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