A new study in Geophysical Research Letters (subs. req’d), “Water-vapor climate feedback inferred from climate fluctuations, 2003–2008” analyzed recent variations in surface temperature and “the response of tropospheric water vapor to these variations.” They concluded that the “water-vapor feedback implied by these observations is strongly positive” and “similar to that simulated by climate models.” The … Continue reading Study: Water-vapor feedback is “strong and positive,” so we face “warming of several degrees Celsius”