In the CO2 series we looked at the effect of CO2 without climate feedbacks. The “answer” to the doubling of CO2 was a “radiative forcing” of 3.7W/m^2 and an increase in surface temperature of about 1°C. What about feedbacks? There are many ways to introduce this problem. We’ll start with the great Ramanathan, who is … Continue reading Clouds and Water Vapor – Part One