The report mentioned in TFA says 1.5 to 4.5 degrees celsius from a doubling of atmospheric CO2, which was projected for 2075. We can have the same trust in the

The report mentioned in TFA says 1.5 to 4.5 degrees celsius from a doubling of atmospheric CO2, which was projected for 2075. We can have the same trust in the warnings because we can read and understand. https://nepis.epa.gov/Exe/ZyPDF.cgi/70000A5V.PDF?Dockey=70000A5V.PDF https://nepis.epa.gov/Exe/ZyPDF.cgi/70000A5V.PDF?Dockey=7000... "Carbon cycle modelers and energy economists generally expect the concentration of C02 to increase 50 percent by 2050 and to double by 2075." "All projections of future concentrations have been based on the assumption that current trends will continue and that governments will not regulate emissions of greenhouse gases. However, in the fall of 1987, most of the industrial nations agreed to cut emissions of the chlorofluorocarbons by 50 percent over the following decade. Moreover, the United Nations has created an Intergovernmental Panel on Climate Change to develop strategies to reduce emissions of greenhouse gases in general. Nevertheless, curtailing emissions will be difficult. There is considerable doubt regarding the global warming that would result from a doubling of carbon dioxide. There is general agreement that the average temperature would rise 1.2°C if nothing else changed. However, warmer temperatures would allow the atmosphere to retain more water vapor, which is also a greenhouse gas, increasing the warming. A retreat of ice cover would also amplify the warming, while possible changes in cloud cover could increase or decrease the warming. Two reports by the National Academy of Sciences have developed a consensus estimate that the average warming will be 1.5 to 4.5°C, and that the polar areas will warm two to three times as much."