Extreme high temperature occurs in both the north and south polar regions

2022-11-30

Recently, many meteorologists observed extreme high temperature weather in both the North and South Poles, and the temperature in some areas exceeded the average level of the same period in previous years by 30 to 40 degrees Celsius.
Under normal circumstances, the temperature in Antarctica will gradually decrease as the southern hemisphere moves from summer to autumn. However, record high temperatures were recorded at several research stations in Antarctica on the 18th of this month. According to Agence France Presse, Etienne Capiquian, a meteorologist of the French Meteorological Bureau, said on social media that the temperature measured at Concordia Antarctic Station jointly built by France and Italy on the 18th was minus 11.5 degrees Celsius, a record high. This figure is about 40 ℃ higher than the average level in the same period of previous years.

Jonathan Weiler, a polar meteorologist at the Alpine University of Grenoble, France, said on social media that the temperature measured at Concordia was 1.5 ℃ higher than the previous record high temperature, which "should not have occurred".
Matthew Lazara, a meteorologist at the University of Wisconsin in the United States, observed that the temperature in the C-ii region of the ice dome in East Antarctica reached minus 10 degrees Celsius on the 18th day, while the average temperature in the same period in previous years was minus 43 degrees Celsius. Lazara said: "This temperature should occur in January, not March. January is summer there. It's too exaggerated."
The Associated Press quoted Walter Meyer, a scientist from the National Snow and Ice Data Research Center of the United States, as reporting that the temperature in some parts of the Arctic in mid March was about 30 ℃ higher than the average level in the same period of previous years, and the temperature in some regions even approached or reached the freezing point, which is extremely rare.
Meyer said that the seasons at the south and north poles are opposite at present, but extreme high temperature weather occurs at the same time, which is "absolutely unusual" and "quite amazing".
Both Lazara and Meyer believe that the current high temperature weather in Antarctica may also be accidental. However, once similar situations occur again or repeatedly, it may cause concern.
Researchers from the University of Maine said that, based on the weather model established by the National Oceanic and Atmospheric Administration of the United States, compared with the average level of the same period from 1979 to 2000, the temperature of the Antarctic continent on the 18th of this month was about 4.8 ℃ higher as a whole, that of the Arctic region was 3.3 ℃ higher as a whole, and that of the whole world was 0.6 ℃ higher.
Globally, the average temperature from 1979 to 2000 was about 0.3 ℃ higher than the average level in the 20th century.
According to the data from the National Snow and Ice Data Research Center of the United States, the sea ice area in Antarctica decreased to about 1.9 million square kilometers in late February, the first time it has fallen below the 2 million square kilometers threshold since the relevant records were made in 1979. In addition, the rate of climate warming in the Arctic is two to three times that in other parts of the earth, and the warm air over the Atlantic is moving northward from the coast of Greenland.
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