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Earth's Oceans Used To Be 20-25°C Warmer Than They Are Today

Earth’s Oceans Used To Be 20-25°C Warmer Than They Are Today

By on 1. October 2020

Today’s global ocean temperatures hover around 15°C on average. About 400 to 500 million years ago, Earth’s ocean temperatures averaged 35-40°C and atmospheric CO2 concentrations were “5-10x higher than present day values” (Henke et al., 2018). During this period, the marine biosphere thrived (Voosen et al., 2019). Image Source: Henke et al., 2018 Image Source: […]

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