The "extreme high temperature" in the Arctic leads to the cold in late spring. Which areas have obvious temperature changes?

The large-scale invasion of the Antarctic continent and the Arctic Ocean by the warm air mass has caused an extremely rare and intense temperature rise, which is almost simultaneous in the North and South poles. The highest temperature in the extreme warm area is more than 2 million square kilometers, and the temperature of 850 hectopascals is 20-30 degrees higher. Hayes Island and Weize Island near the North Pole rise to 0 degrees, which is nearly 20 degrees higher than normal. Greenland Morris? Cape Jessup rose from minus 24 degrees to zero degrees in one day, about 25 degrees higher than normal.

First of all, this "extreme high temperature" is completely different from what we usually understand as "high temperature". The "extreme high temperature" here refers to the rising temperature and abnormal high temperature, not the high temperature weather above 35 degrees. According to the measured data, the highest time in the Arctic is about 0 degrees, while the highest time in the Antarctic continent is as low as-10 degrees. The use of the word "extreme high temperature" may be a translation process done by the media to facilitate people's understanding.

The "extreme high temperature" at the two poles is the result of the violent oscillation of the westerly belt and the abnormal intrusion of blocking high pressure into the South Arctic Circle. There are westerlies all the year round in the northern and southern hemispheres. When the westerly belt is straight, the weather below is calm, and when the westerly belt oscillates violently, the weather is fierce. Due to the large ocean area in the southern hemisphere, the westerlies in the southern hemisphere are straighter and more stable than those in the northern hemisphere. This time, there has never been such a big fluctuation.

Although this "extreme high temperature" is extreme, it is still a weather event. The sharp rise in Arctic temperature lasted only two days, and then quickly returned to normal level. The temperature rise in Antarctica is also dropping rapidly, and will return to normal by the end of this week. Therefore, this "extreme high temperature" does not constitute a climate anomaly, let alone a drastic climate change.

In addition, due to the short heating time, and the highest temperature in most places is still below 0 degrees, this "extreme high temperature" will not lead to large-scale melting of glaciers, nor will it lead to a significant rise in sea level, and it will not have a significant impact on the earth's lithosphere. Friends by the sea can feel at ease.

However, we should also see that the "extreme high temperature" in the Arctic has had an impact on China: because of it, the cold air in the Arctic and Siberia has been squeezed southward, and there has been a large-scale rain and snow cooling in the central and eastern regions, and the late spring cold has formed. The more intense Antarctic "extreme high temperature" may not melt glaciers, but it may have an impact on the shape and structure of glaciers.