Antarctica's Concordia research station recorded the coldest temperature on Earth in 14 years on July 18, with readings of –119.4°F (–84.1°C). These extreme sub-freezing temperatures were registered twice overnight at the remote research station, marking the coldest temperatures recorded anywhere on the planet since 2012. At that time, Russia's Vostok Station in East Antarctica reached –119.6°F.
Concordia, situated 600 miles from the coast at an elevation of 10,500 feet, is known for its harsh winter conditions. During the Southern Hemisphere's winter months, temperatures commonly drop below –112°F. However, the July low was colder than usual.
"During winter, there is no sunlight for months, the atmosphere is extremely dry and stable, and under clear skies, heat continuously escapes to space because there are no clouds, allowing temperatures to fall to extraordinary levels," explained Gabriele Carugati, the station leader for Italy’s National Antarctic Research Program. Carugati noted that the recent lows demonstrate "how variable Antarctic weather can still be," adding that temperatures below minus 84°C are remarkable even at Concordia.
The research station's isolated location makes it ideal for studying weather and atmospheric conditions. During winter, travel to and from the station is impossible, and the nearest research center, Vostok Station, is over 370 miles away. This isolation has been compared to that of the International Space Station.
The record low for Concordia is –120.5°F, set in 2010. The coldest temperature ever recorded on Earth was –128.6°F at Vostok Station in July 1983. Satellite data suggests that temperatures in shallow depressions near the ice sheet's peak in East Antarctica could potentially drop as low as –144°F, where atmospheric conditions are considered near the coldest possible naturally occurring temperatures on Earth.
These frigid Antarctic temperatures stand in stark contrast to the Northern Hemisphere, which has experienced record-high temperatures and widespread wildfires. Even Antarctica has seen extremes, with Argentina's Esperanza base on the Trinity Peninsula recording its hottest-ever winter temperature of 59.7°F last month. Scientists continue to observe that Antarctica is melting from below due to ocean warming, which threatens ice shelves and could accelerate global sea-level rise.
Researchers emphasize that individual extreme weather events do not contradict the broader trend of global warming. "Climate change describes the long–term global trends, while individual weather events can still [bring] exceptional cold," Carugati said. "Antarctica is influenced by complex atmospheric processes, so an extreme low temperature at one location does not contradict the broader picture of global warming."