Researchers need to know the transient response and equilibrium sensitivity of climate forcings. (giss.nasa.gov)
The precise sensitivity of the climate to increasing CO2 is still fairly uncertain: 2 — 4.5 °C is a fairly wide range of likely values. (skepticalscience.com)
Yet there are numerous explanations for this — including natural variability in the amount of heat absorbed by the ocean — that do not imply a lower sensitivity of the climate to greenhouse gases. (e360.yale.edu)