About the weather in the Arctic

A sharp rise of 35℃ in the Arctic temperature will lead to an extreme weather of 20 1 1 512.30 in the early morning, and the Arctic has ushered in a "century warm current". According to the online monitoring data of NASA, the temperature in the Arctic suddenly rose by 35℃, jumping from minus 35℃ on the 29th to 0.8℃, and the temperature in the Arctic is equivalent to that in Beijing. The online edition of Atlantic Monthly reported that the warm climate in the Arctic has reached an unprecedented level, which is the second time on record. Many domestic meteorologists interviewed by Caijing reported that this is only an extreme weather phenomenon, and its causes need further study. It will bring extreme weather to some parts of the world in the short term and will not affect global climate change on a large scale. According to the Atlantic Monthly, extreme weather was caused by a strong storm near Iceland. The storm triggered deadly tornadoes in the southeastern United States at the end of February, 20 15 and 15, and then moved north. The eye of the wind arrived in Iceland, bringing strong winds and low pressure that usually appear in hurricane weather. This low pressure sucks the air in the middle latitudes of the world and almost rolls up the heat in the whole North Atlantic. Driven by the storm, the west wind of the North Atlantic turned to the north urgently, passing between Britain and Iceland on a large scale and heading straight for the North Pole. Hu Yongyun, a professor of atmospheric science at Peking University Institute of Physics, told Caijing that the incident was caused by blocking high pressure. Abnormal warming in the Arctic is not a large-scale climate event, but an extreme weather event in a short time. Blocking high is a slow-moving or quasi-static closed high developed on the westerly belt, which often appears in the Atlantic Ocean, Europe and Alaska in western North America. The establishment and collapse of blocking high pressure are often accompanied by drastic changes in circulation patterns in a large range or even in the hemisphere. Ding, an academician of China Academy of Engineering and a researcher at the National Climate Center of China Meteorological Bureau, agrees with this statement. He said such weather systems are more common in winter. "The reason for the storm is that the low system transit pushes the temperate warm and humid air to invade the polar regions. This situation is more common, but this time it is stronger." As far as the current level of meteorological monitoring and data analysis is concerned, experts all over the world dare not say that abnormal warming in the Arctic is directly related to global warming. "There is no clear answer now, but this option cannot be ruled out." Hu Yongyun said. Yang Xuexiang, a professor at the College of Earth Exploration Science and Technology of Jilin University, told Caijing that Arctic warming may be related to global warming, but it will take years or even decades for the scientific community to prove the correlation between climate change caused by human activities and the North Atlantic storm. Sun Jianqi, a researcher at lasg, also said that due to the lack of more detailed observation data, it is difficult to judge the coordinates of this special event in global warming. However, Robert Scribbler, an American writer who specializes in meteorology, firmly believes that this event is related to the greenhouse effect. Because usually this huge thermal storm has to pass through an atmospheric "high-altitude jet stream" that sends mild weather to Europe to reach Iceland, but now the intensity of the jet stream has weakened, which indicates that something else should be happening. The abnormal high temperature in the last two days of Arctic 20 15 is similar to the phenomenon of "polar vortex" moving southward slowly in winter in recent years, and these changes are related to the climate change caused by human activities. What impact will the strong storm that caused the "century warm current" in the Arctic have on the regional weather? Hu Yongyun said that there will be a strong cold wave activity in East Asia, including China. "The smog in North China will be expelled in this cold wave. The cold wave will not last long, and it is expected to last for about ten days." This event will have a far-reaching impact on the weather pattern in the northern hemisphere in June+10, 5438. When warm and high pressure forcibly enters the Arctic region, the cold air mass accumulated in this region will shift and pour down to the middle and low latitudes, causing energy fluctuation and transfer. In the mid-latitude region, there will be severe cooling from west to east, accompanied by severe weather such as strong winds and snowstorms. Yang Xuexiang believes that this event is a large-scale change in the Arctic and equator, which will affect the general trend of climate change in the first quarter of 20 16, but it will not be normal for the Arctic temperature to be above zero in the future, and super El Ni? o will not occur frequently. Zhu Jiehua, chief service officer of Shanghai Central Meteorological Observatory, believes that the polar vortex in the Arctic has split, and the polar region has changed from low pressure to high pressure control, and the northerly wind has strengthened, making cold air invade south, gather in Siberia, and gradually move eastward and southward, eventually invading China. The Central Meteorological Observatory predicted on October 6th, 65438/kloc-0 that the temperature in North China, Northeast China, Huanghuai and other places will change from obviously high to low 1℃ to 3℃ in the next ten days, and the temperature in most other areas in the central and eastern regions will also drop to the normal level. Previously, the northern hemisphere was still in a warm winter. The lack of cold air in northern China leads to frequent smog. The United States has just spent a warm Christmas Eve and Christmas, and the temperature in several cities in Northeast China has broken the historical record. In the recorded year 100, the temperature in new york never exceeded 18℃ on February 24th, 20 15, but the temperature in new york was as high as 1 9.4℃ in the early hours of Christmas Eve. Hu Yongyun said that in the long run, this event may not change the global climate, but it is possible that the global climate change has caused the warming of the Arctic, and more extreme weather events may occur in the future. Source: Finance and Economics