WeatherRusty

I'm quite sure 200 feet rather than meters is what was intended. The 1.5C to 4.5C temperature range represents the estimate for equilibrium climate sensitivity to a DOUBLING of CO2 or it's equivilant in radiative forcing. Since we will likely pass a doubling of CO2 over pre-industrial levels by mid century and other greenhouse gases such as methane and nitrous oxide continue to increase the radiative forcing produced by human factors will exceed that from a simple doubling of CO2.