Sea ice kept oxygen from reaching deep ocean during last ice age – Phys.org

Extensive sea ice covered the world’s oceans during the last ice age, which prevented oxygen from penetrating into the deep ocean waters, complicating the relationship between oxygen and carbon, a new study has found.
“The sea ice is effectively like a closed window for the ocean,” said Andreas Schmittner, a climate scientist at Oregon State University and co-author on the paper. “The closed window keeps fresh air out; the sea ice acted as a barrier to keep oxygen from entering the ocean, like stale…

Click here to view the original article.