Well the modelers/alarmist have theorized that the effect of CO2 in the atmosphere has a positive feedback effect on temperatures. Now systems with positive feedback are very sensitive systems all the climate models build in a positive feedback effect from CO2 having to do with clouds trapping heat and causing the planet to warm. How do these models compare with the measurements from satellites? He is an abstract from R Spencer who is the father of satellite measurements at NASA Satellite and Climate Model Evidence Against Substantial Manmade Climate Change (supercedes â€śHas the Climate Sensitivity Holy Grail Been Found?â€ť) Roy Spencer, Ph. D. BTW for those concerned this is non commercial material submitted into the public domain.