posted on Sep, 12 2018 @ 11:41 AM
The term climate sensitivity (specifically due to CO2) is often “expressed as the temperature change in °C associated with a doubling of the
concentration of CO2 in Earth's atmosphere” from its pre-industrial concentration of 280ppm to 560ppmv.
Climate sensitivity estimates rage dramatically, depending on the paper. Below is a table I put together some time ago comparing climate sensitivity
estimates in various scientific papers to that of the IPCC. ECS stands for “equilibrium climate sensitivity” and TCS stands for “transient
The IPCC appears to overestimate climate sensitivity. They estimate that ECS is 3°C and TCS is 1.7°C. The average, from all of the 33 papers listed
below (some of which are rounded off), including the estimates from the IPCC, is 1°3C.
What are your thoughts? Should we be worried about human-induced climate change? Are some of the studies cited below unreliable? How much warming can
we expect from a doubling of CO2?