Continuous sterane and phytane δ13C record reveals a substantial pCO2 decline since the mid-Miocene - Nature Communications
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Molecular fossils from marine phytoplankton reveal a substantial decline in CO2 values over the past 15 million years and may support higher climate sensitivity than previously reported.
  • EspiritdescaliMAEnglish
    8·
    5 months ago

    When we again weigh each sensitivity by the percent-area for the Earth, our global average ECS is 7.2 °C per doubling of CO2, much higher than the most recent IPCC estimates of 2.3 to 4.5 °C and consistent with some of the latest state-of-the-art models which suggest ca. 5.2 °C

    2.3c means crop failures and food shortages globally. 5.2c means the end of our civilisation. 7.2c means the end of our species.