Wednesday October 11, 2023

The Conversation

There is growing consensus that our planet is likely to pass the 1.5℃ warming threshold. Research even suggests global warming will temporarily exceed the 2℃ threshold, if atmospheric carbon dioxide (CO₂) peaks at levels beyond what was anticipated.

Exceeding our emissions targets is known as a climate overshoot. It may lead to changes that won’t be reversible in our lifetime.

These changes include sea-level rise, less functional ecosystems, higher risks of species extinction, and glacier and permafrost loss. We are already seeing many of these changes.

Our newly published research investigates the implications of a climate overshoot for the oceans. Across all climate overshoot experiments and all models, our analysis found associated changes in water temperatures and oxygen levels will decrease viable ocean habitats.

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