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One is dated March 9, 1997, and the other is labeled with the same date in 2024. "Antarctic sea ice extent is higher today — 3,165,625 km. sq. — than it was 27 years ago — 3,075,000 km. sq ...
The Antarctic sea ice cover is highly seasonal, with very little ice in the austral summer, expanding to an area roughly equal to that of Antarctica in winter.It peaks (~18 × 10^6 km 2) during September (comparable to the surface area of Pluto), which marks the end of austral winter, and retreats to a minimum (~3 × 10^6 km 2) in February.
Over geologic time sea level has fluctuated by more than 300 metres, possibly more than 400 metres. The main reasons for sea level fluctuations in the last 15 million years are the Antarctic ice sheet and Antarctic post-glacial rebound during warm periods. The current sea level is about 130 metres higher than the historical minimum.
On the other hand, the East Antarctic ice sheet is far more stable and may only cause 0.5 m (1 ft 8 in) - 0.9 m (2 ft 11 in) of sea level rise from the current level of warming, which is a small fraction of the 53.3 m (175 ft) contained in the full ice sheet.
A comparison of polar sea ice extents on two random days does not provide enough information to determine whether or not Earth's climate is changing.
Antarctic sea ice extent peaked this year on Sept. 10, when it covered 16.96 million square kilometers (6.55 million square miles), the lowest winter maximum since satellite records began in 1979 ...
Ice shelves are attached to a large portion of the Antarctic coastline. Their total area is 1,541,700 km 2. [1] Names are also listed in the Scientific Committee on Antarctic Research, Gazetteer. [2] The ice shelf areas are listed below, clockwise, starting in the west of East Antarctica:
Antarctica’s vast expanse of sea ice regulates Earth’s temperature, as the white surface reflects the Sun’s heat back into the atmosphere. Record low sea-ice levels around Antarctica ...