A reader has emailed to say,
“Virtually all GCMs result in the temperature of the troposphere at the
tropics increasing at about 1.3x that of the increase in the surface temperature. But all observations show that troposphere temp in the tropics is increasing at 1/2 to 1/3 that rate. Isn’t that proof that the greenhouse effect can not be causing an increase in surface temperature? How can something gaining less heat(trop.), heat something gaining more heat(surface)?
I have pulled the following data from the KNMI ClimateExplorer, climexp.knmi.nl/
The graphic below shows the differences between MSU and the Hadley Centre and GHCN/CAMS data.