# Elevated early Eocene atmospheric CO 2 tied to reduced Southern Ocean biological pump efficiency

Source: [nature.com](https://www.nature.com/articles/s41561-026-02142-7) · 2026-11-06 · Earth & Climate
Page: https://themorning.science/story/elevated-early-eocene-atmospheric-co-2-tied-to-reduced-southern-ocean-biological-9a113d635c4983d5

Nature Geoscience, Published online: 06 November 2026; doi:10.1038/s41561-026-02142-7 Warming in the early Eocene reduced the efficiency of the Southern Ocean biological carbon pump, limiting carbon sequestration in the ocean interior and enhancing atmospheric CO2 levels…

## Coverage

- [Elevated early Eocene atmospheric CO 2 tied to reduced Southern Ocean biological pump efficiency](https://www.nature.com/articles/s41561-026-02142-7) — nature.com, 2026-11-06

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