Warmist Trenberth directly contradicts warmist Dessler: Trenberth claims widespread agreement that warming will exceed 2 deg. C; Dessler says warming may be less than 1.5 deg. C

WSJ's Climate "Dynamite" Is A Dud | Blog | Media Matters for America

With regard to the feedback effect of water vapor: Kevin Trenberth, a scientist with the National Center for Atmospheric Research, told Media Matters in an email: "water vapor effects are well established as an amplifier (strong positive feedback)." Abraham further noted that Ridley has apparently confused water vapor with clouds, whose effects are not as well understood. He said, "it is very clear water vapor...is an amplifying effect. It is a very strong warmer for the climate" and challenged Ridley to name the anonymous scientist who gave him his information.

With regard to the rate of ocean heat absorption: Trenberth wrote: "On the contrary there is now very good evidence that a LOT of heat is going into the deep ocean in unprecedented ways, which completely undermines this sort of argument. OHC [Ocean Heat Content] keeps increasing at a fairly steady rate, just as sea level keeps going up."...Trenberth wrote "There is now widespread agreement that stopping global mean [temperature] increase at 2 [degrees] C [3.6°F] is impossible. Rather 3 [degrees] C [5.4°F] will be difficult." Andrew Dessler, a climate scientist at Texas A&M, conceded that estimates of climate sensitivity for doubled carbon cover a range of outcomes, but wrote in an email that "the IPCC's canonical range gives about the right probability distribution: 2-4.5°C [3.6-8.1°F] is the likely range, with values below 1.5°C [2.7°F] being very unlikely."