A scenario where the sun doesn't rise and a blizzard strikes Antarctica (typical of winter, but intensified) would trigger cascading impacts:
Without solar input, temperatures plummet further—potentially below –60°C (–76°F). Wind chill from blizzard winds (50–100+ km/h) makes exposed skin freeze in minutes.
Whiteout conditions eliminate horizon, landmarks, and GPS utility (signal multipath). Movement on foot or vehicle becomes life-threatening.
Most stations rely on solar + wind + diesel. No sun = no solar; blizzard = turbine icing/shutdown. Diesel becomes sole source—finite, hard to resupply.
No flights (LC-130, Twin Otter) land in whiteout. Ships cannot navigate pack ice + storm. Stations isolated for weeks/months.
Extended darkness disrupts circadian rhythms → seasonal affective disorder, cognitive decline, sleep disorders. Confinement + danger = high stress.
Fieldwork halted. Remote sensors may fail. Long-term datasets (climate, seismic, astronomical) develop gaps.
Emperor penguins (winter breeders) endure; but phytoplankton collapse (no photosynthesis) ripples up food web—krill, fish, seals, whales affected next season.
Shelter-in-place, buddy systems, emergency rations, medical contingency. Evacuation only in dire medical emergency.
Antarctica's winter is this scenario routinely. Stations are engineered and staffed for it. The danger lies in compounding anomalies—longer darkness, stronger storms, system failures.