Global warming Increase in average global temperatures of the atmosphere and oceans over the past 100 years. (slideplayer.com)
These are, respectively, the upper «safe» concentration of carbon dioxide in the atmosphere, and the upper «safe» limit of average global temperature increase. (newscientist.com)
The predicted rise in average global temperatures of 4 °C in the course of this century would transform human life over a major part of the planet. (cliscep.com)