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Nearly all of Antarctica is covered by a sheet of ice that is, on average, at least 1,500 m (5,000 ft) thick. Antarctica contains 90% of the world's ice and more than 70% of its fresh water. If all the land-ice covering Antarctica were to melt—around 30 × 10 ^ 6 km 3 (7.2 × 10 ^ 6 cu mi) of ice—the seas would rise by over 60 m (200 ft). [22]
Severe weather is possible within 24 to 48 hours; Visibility is greater than 300 metres (980 ft) Wind less than or equal to 45 knots (83 km/h; 52 mph) Air temperature and wind chill are above −60 °C (−76 °F) Weather Condition 2: Must meet all of the following criteria: Visibility is greater than 30 metres (98 ft)
Weather fronts rarely penetrate far into the continent, leaving the centre cold and dry, with moderate wind speeds. Heavy snowfalls are common on the coastal portion of Antarctica, where snowfalls of up to 1.22 m (48 in) in 48 hours have been recorded. At the continent's edge, strong katabatic winds off the polar plateau often blow at storm force.
Two temperature records were set on February 6, one in each hemisphere, one for warmth, the other for mind-numbing cold. On Feb. 6, 2020, five years ago, Antarctica set its all-time record high of ...
24/7 Help. For premium support please call: 800-290-4726 more ways to reach us. ... Antarctica’s typical winter cold should be operating at a level unfathomable to most people in the US.
Most in a 24-hour period: 230 centimetres (90.6 in) of snow on Mount Ibuki, Japan on 14 February 1927. [ 307 ] Most in one calendar month : 9.91 meters (390 inches) of snow fell in Tamarack, California , in January 1911, leading to a snow depth in March of 11.46 meters (451 inches) (greatest measured in North America).
Parts of icy Antarctica are turning green with plant life as the region is gripped by extreme heat events, new research shows, sparking concerns about the changing landscape on this vast continent.
Antarctica is surrounded on all sides by the Southern Ocean. As a result, high-speed winds circle around Antarctica, preventing warmer air from temperate zones from reaching the continent. While Antarctica does have some small areas of tundra on the northern fringes, the vast majority of the continent is extremely cold and permanently frozen.