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On Feb. 6, 2020, five years ago, Antarctica set its all-time record high of 64.9 degrees (18.3 degrees Celsius) at Esperanza Base, an Argentine research station near the northernmost tip of the ...
The current is circumpolar due to the lack of any landmass connecting with Antarctica and this keeps warm ocean waters away from Antarctica, enabling that continent to maintain its huge ice sheet. Associated with the Circumpolar Current is the Antarctic Convergence , where the cold Antarctic waters meet the warmer waters of the subantarctic ...
The World Tonight is a Philippine television news broadcasting show broadcast by ABS-CBN, ANC and Kapamilya Channel. Originally anchored by Hal Bowie and Henry Halasan, it aired on ABS-CBN's nighttime line-up from November 21, 1966 to September 22, 1972. The newscast returned on the network's evening line-up from September 15, 1986 to August 13 ...
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]
Even this vast and isolated ‘wilderness’ is being affected by climate change.
About 70% of the world's freshwater reserves are frozen in Antarctica, which, if melted, would raise global sea levels by almost 60 metres (200 ft). Antarctica holds the record for the lowest measured temperature on Earth, −89.2 °C (−128.6 °F). The coastal regions can reach temperatures over 10 °C (50 °F) in the summer.
A schematic overview of the Southern Ocean overturning circulation. The arrows point in the direction of the water movement. The lower cell of the circulation is depicted by the upwelling arrows south of the Antarctic Circumpolar Current (ACC) and the formation of Antarctic Bottom Water beneath the sea ice of Antarctica due to buoyancy loss.
Antarctic bottom water is formed in the Weddell and Ross Seas, off the Adélie Coast and by Cape Darnley from surface water cooling in polynyas and below the ice shelf. [7] An important factor enabling the formation of Antarctic bottom water is the cold surface wind blowing off the Antarctic continent. [8]