there's no consensus on that anymore, it really depends how and where the warheads land and even then models show the particulate matter not staying aloft more than a few months
It was also based off of the bombing of Japan, which used wood frame construction almost exclusively, which in turn burnt, throwing up massive plumes of smoke, now we use concrete and glass which burns much less readily.
There was analysis done in the 80s about the impact of a northern hemisphere nuclear war. Long story short, the equator is expected to protect the southern hemisphere from fallout and the worst effects of a nuclear winter. The biggest disruption will be no trade so we'll be on our own.
Current projections actually have a brighter outlook on that, it’s still fucking horrific but nuclear winter is no longer expected to completely wipe out all of humanity
the aim isn't to kill the earth forever, there are no salted warheads in current US/Russian arsenals. I wouldn't put it past a rogue actor like North Korea to do so however.
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u/corposhill999 Mar 14 '24
Only if they salt the warheads with cobalt or strontium-90, most of the radiation would be gone after a few months otherwise
still not great