It remains low (at about this level) until the middle early Miocene. From ≈20 Ma, CO2 increases again to reach a maximum of ≈400–500 ppmv in the early middle Miocene (15.5 Ma).
Jan 15, 2008
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Jan 23, 2023 · The Late Miocene (11.6 to 5.3 Ma) represents a predominantly warmer-than-present interval that was characterized by elevated atmospheric CO2 ...
Feb 2, 2022 · The data show evidence for elevated pCO2 during the Middle Miocene and Early to Middle Pliocene, and reductions in pCO2 of ∼ 200 ppm during the ...
Jul 25, 2022 · Earth's climate cooled markedly during the late Miocene from 12 to 5 million years ago, with far-reaching consequences for global ecosystems ...
Jan 23, 2023 · Key Points · At a CO2 level of 450 ppm, a Miocene simulation shows a global mean surface warming of +3.1°C relative to the preindustrial state.
Feb 2, 2022 · Here we reconstruct atmospheric CO 2 values across major climate transitions over the past 16 million years using the boron isotopic composition (ä 11 B) of ...
Proxy records from the Miocene epoch (∼23-5 Ma) indicate a warmer climate than today in spite of lower atmospheric carbon dioxide (CO2) concentrations in ...
Late Miocene Atmospheric CO2 Concentrations and the Expansion ...
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The global expansion of C4 grasslands in the late Miocene has been attributed to a large-scale decrease in atmospheric carbon dioxide (CO2) concentrations.
Jul 8, 2015 · According to this research, atmospheric CO2 concentration was stabile around 330–350 ppmv in the middle and late Miocene, then it decreased to ...
Jan 1, 2024 · The Mid-Miocene Climatic Optimum (MMCO) occurred at ~17–15 Ma, during which many modern taxa of plants and animals arose, but during a time of ...
