The Science of Doom

Global temperature has been rising since around 1900, and CO2 is the principal cause. The physics behind the inappropriately-named “greenhouse effect” is certain, so burning fossil fuels, which adds CO2 to the atmosphere, is certain to increase the surface temperature. I’ve written many articles on that topic on the original blog and shown how the equations are derived (see Notes).

So it should be no surprise to find that there are more extreme hot days and less extreme cold days.

If the temperature goes up, then the number of days with a temperature above say 35°C (86°F) or 40°C (95°F) – or whatever number you want to pick – will increase.

Likewise, the number of days with a temperature below say -10°C (14°F) or -20°C (-4°F) – again, pick a number for your region – will decrease.

Here’s a graph of global land and ocean temperature, extracted from a larger graph in chapter 2 of AR6 (see the Notes below for the full map of changes):

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