elpenguino:

 

From https://en.wikipedia.org/wiki/Nuclear_winter#:~:text=Nuclear%20winter%20is%20a%20severe,a%20large%2Dscale%20nuclear%20war.

 

 

firestorms would result in the injection of soot (specifically black carbon) into the Earth's stratosphere, producing an anti-greenhouse effect that would lower the Earth's surface temperature. The severity of this cooling in Alan Robock's model suggests that the cumulative products of 100 of these firestorms could cool the global climate by approximately 1 °C (1.8 °F), largely eliminating the magnitude of anthropogenic global warming for the next roughly two or three years.

 

 

Our climate is currently heating (or hotter), so the firestorms could be just what we need to get back to where we were a few years ago. Considering the immediate population loss from nuclear strikes and subsequent knockback to global trade, a nuclear war could be just what we need as a climate 'reset'.

 

 

 

Read a lot about that. These particles are large, so unlike atmospheric dust they hold onto more water, so shield the Sun somewhat.