Hot off the press, in yesterday’s Journal of Climate, Nic Lewis and Judith Curry have re‐calculated the equilibrium climate sensitivity (ECS) based upon the historical uptake of heat into the ocean and human emissions of greenhouse gases and aerosols. ECS is the net warming one expects for doubled atmospheric carbon dioxide. Their ECS ranges from 1.50 to 1.56 degrees Celsius.
Will global warming of a couple of tenths of a degree Celsius bring about certain disaster? That’s what a widely circulated report by Marlow Hood of the French Associated Press suggests about the horrors to come if global warming exceeds 1.5°C.
It is not surprising that EPA Administrator Scott Pruitt announced the Obama standards are not to stand; we hope our extensive public comments submitted on September 27 exerted some influence on this decision.