@TchakTchak
j’ai trouvé, c’était pas long :
https://www.ipcc.ch/site/assets/uploads/sites/2/2019/06/SR15_Full_Report_Hig h_Res.pdf
page 4
Human activities are estimated to have caused approximately 1.0°C of global warming5 above pre-industrial levels, with a likely range of 0.8°C to 1.2°C. Global warming is likely to reach 1.5°C between 2030 and 2052 if it continues to increase at the current rate. (high confidence) (Figure SPM.1) 1.2