CO2 rise "most likely due to warming oceans degassing"

“What happens if we use the plant stomata-derived CO2 instead of the ice core data?

We find that the ~250-year lag time is consistent. CO2 levels peaked 250 years after the Medieval Warm Period peaked and the Little Ice Age cooling began and CO2 bottomed out 240 years after the trough of the Little Ice Age. In a fashion similar to the glacial/interglacial lags in the ice cores, the plant stomata data indicate that CO2 has lagged behind temperature changes by about 250 years over the last millennium. The rise in CO2 that began in 1860 is most likely the result of warming oceans degassing.”  “CO2: Ice Cores vs. Plant Stomata

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2 Responses to “CO2 rise "most likely due to warming oceans degassing"”

  1. kramer Says:

    I’m not sure I agree with this because when the earth has heated in the past, the levels of CO2 haven’t reached this high.

  2. Ric Says:

    @kramer | 12/25/2010 at 9:21 pm |

    “I’m not sure I agree with this because when the earth has heated in the past, the levels of CO2 haven’t reached this high.”

    Actually,
    CO2 has been MUCH HIGHER in the historical past… but not recently.

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