Lowest temperature extremes on earth
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Coldest Temperature Extremes on Earth: Key Locations and Records
Antarctica: The Coldest Place on Earth
The coldest temperatures ever recorded on Earth have been observed in Antarctica, particularly on the East Antarctic Plateau. Satellite data and ground measurements confirm that this region consistently experiences the lowest surface and air temperatures globally. The coldest air temperature ever measured at a weather station was −89.2°C (−128.6°F) at Russia’s Vostok Station on July 21, 1983. Detailed analysis of this event shows that a combination of a strong polar vortex, minimal warm air intrusion, low wind speeds, and clear skies allowed for this extreme cooling. Researchers estimate that under even more prolonged isolation, temperatures at Vostok could drop to around −96°C, and higher sites like Dome Argus could be even colder by 5–6°C Grant1953Scambos2018Brown2017+1 MORE.
Recent satellite observations have revealed that surface snow temperatures in small basins on the East Antarctic Plateau can reach as low as −98°C (−144°F) during the polar night, especially under clear, dry, and calm conditions. These ultra-cold pockets are found in shallow depressions above 3,800 meters elevation, where cold, dense air pools and radiative cooling is maximized Grant1953Scambos2018Zhao2021.
Northern Hemisphere Records: Siberia and Greenland
In the Northern Hemisphere, northeastern Siberia has long been recognized for its extreme cold. The town of Verkhoiansk, Siberia, recorded a temperature of −93.6°F (−69.8°C) in 1885. However, more recent data show that Greenland holds the record for the lowest temperature in the Northern and Western Hemispheres. On December 22, 1991, the Klinck Automatic Weather Station in Greenland recorded −69.6°C, a value confirmed as credible by the World Meteorological Organization Stepanova19583Weidner2020.
Factors Influencing Extreme Cold
The occurrence of these temperature extremes is influenced by several key factors:
- High Elevation: The coldest spots are typically found at high elevations, such as the Antarctic Plateau and Greenland’s ice sheet Stepanova1958Scambos2018Weidner2020.
- Clear Skies and Calm Winds: Extended periods without clouds or wind allow for maximum radiative cooling, letting heat escape from the surface into space Grant1953Scambos2018Turner2009.
- Extremely Dry Air: Low humidity is crucial, as water vapor traps heat. The driest air allows for the most efficient cooling Grant1953Scambos2018.
- Topographic Basins: Small depressions or basins trap cold, dense air, further lowering temperatures locally Grant1953Scambos2018.
Surface vs. Air Temperature Records
It is important to distinguish between surface (snow or ground) temperatures and standard air temperatures measured two meters above the ground. Surface temperatures can be even lower than air temperatures, especially under clear, calm, and dry conditions, as seen in satellite data from Antarctica Scambos2018Zhao2021Brown2017.
Conclusion
The lowest temperature extremes on Earth are found in Antarctica, with the East Antarctic Plateau holding the record for both air and surface temperatures. The coldest reliably measured air temperature is −89.2°C at Vostok Station, while satellite data suggest surface temperatures can drop to nearly −98°C in small basins. In the Northern Hemisphere, Greenland and Siberia are the coldest regions, with Greenland’s Klinck station holding the record at −69.6°C. These extremes are driven by high elevation, clear and calm weather, extremely dry air, and unique topographic features that trap cold air.
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