These different measures put the likely value of climate sensitivity at about 2 - 4 °C per doubling of CO2. (legalinsurrection.com)
So while the precise value of climate sensitivity poses an interesting scientific question, tackling the policy response is by far the bigger problem. (carbonbrief.org)
This implies a greater value of climate sensitivity than estimated in the 2006 paper. (judithcurry.com)