August 16, 2025Nature CommunicationsOpen Access

Major sea level fall during the Pliocene M2 glaciation

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A substantial increase in ice volume during the Pliocene M2 glaciation correlates with a drop in atmospheric CO2.
Measurements indicate a precise bottom water temperature reconstruction of ±0.2-0.3°C, enhancing understanding of past climates.
The disruption in ocean heat transport suggests significant implications for modern climate patterns and cryosphere responses.
Findings highlight the critical relationship between climate variables, underscoring the sensitivity of the cryosphere to heat transport changes.

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Analysis reveals a major ice volume increase of ~55 m SLE during the Pliocene glaciation, indicating CO2 played a key role.

Yang et al. (2025) studied this question.

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