The average global temperature has not changed in the last 18 years. It's known as the great pause and the Global Alarmists have no credible explanation. ALL their models predicted a continued temperature increase as the concentration of CO2 continued to increase. The latter has happened; the former hasn't
One of the popular alarmist theories is the the heat has been absorbed in the deep ocean, However, NASA Study Finds Earth’s Ocean Abyss Has Not Warmed http://www.nasa.gov/press/2014/october/nasa-study-finds-earth-s-ocean-abyss-has-not-warmed/#.VDMsClewRTu