TCR of 2.0 C (from observations)

This paper, based on observations, not a model, finds a relatively high value of 2.0 C for the transient climate response -- the warming at the time of CO2 doubling.

Disentangling greenhouse warming and aerosol cooling to reveal Earth[rsquor]s climate sensitivity : Nature Geoscience : Nature Publishing Group from Karsten Haustein's Tweet