Apropos to the times... National Security Archive @ GWU: "Investigating the Climate Impacts of #NuclearWar"
1983 Lawrence Livermore: Nuclear Exchange Could “Dramatically Affect the Atmosphere’s Temperature”
Defense Nuclear Agency: Nuclear War Producing “Atmospheric Trauma”
1988 Interagency Study: “Severe Disruption of [Food] Production, Processing, and Distribution”
Ps The early 60s Amchitka Island atomic test blew a hole in the ionosphere that altered the weather