New carbon dioxide emissions model: “carbon dioxide emissions must be reduced to around zero by the end of the century”

New carbon dioxide emissions model: “carbon dioxide emissions must be reduced to around zero by the end of the century”. How dare those Europeans tell Anthony Watts what to do! Wait, the copied-and-pasted  Max Planck Society for the Advancement of Science press release is simply saying this:

Meteorologists have determined exactly how much carbon dioxide humans can emit into the atmosphere while ensuring that the earth does not heat up by more than two degrees.

CO2 emissions calculated by the model (left, in gigatons carbon/year) and the temporal development of the global mean annual temperature (right). For long-term stabilisation of atmospheric carbon dioxide concentration, fossil carbon dioxide emissions must be reduced to around zero by the end of the century. Black lines represent the observed values. Source: Max Planck Institute for Meteorology.

The practical truth is that if we want to limit the global temperature increase to the 2°C rise that has been agreed is a wise target, we’re going to have to start acting now. There is a significant “inertia” to our climate’s response to inputs such as CO2 emissions, it’s not as if we can just “turn off the tap” when it suits us.

Anthony leaves the wise observations that we’d “better stop breathing” and howls about taxation, socialist vegetarian conspiracies and population control to flourish uncorrected in the comments.

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