This article: People's client.
Cooling, blizzard, freezing rain ......This winter, waves of cold waves frequently move south. In the past Lantern Festival, there was another round of snowfall in southern Jiangsu, and until the morning of February 25, a layer of "ice shell" could still be seen in many places in Nanjing. The scientific community is talking about global warming, why is this winter so cold?
Recently, various weather news has frequently appeared on the hot search. During the Spring Festival holiday, the sun is shining, and some people who are exercising outdoors have worn short-sleeved T-shirts, but during the Lantern Festival, snow falls in many places across the country, and everyone wraps their down jackets. Some netizens said, "It's a little messy......It's hard to say what season it ......”
On February 17-21, the cold wave affected most parts of our country from west to east and from north to south. Weibo "China Weather" released the topic The largest difference in temperature in China on the same day was 777. On February 20, the highest temperature occurred in Changjiang, Hainan Province 351. The lowest temperature occurred in Mohe, Heilongjiang -426, a difference of 777℃。
Is the world really warming? From the perspective of year-round temperatures, global warming has not stopped. According to the communiqué issued by the World Meteorological Organization, 2023 was officially confirmed as the hottest year on record, and the abnormal climate has also triggered many meteorological disasters around the world, such as heat waves, droughts, torrential rains and floods, typhoons, hurricanes, and forest fires. Therefore, the strong cold wave is just one of many extreme weather events brought about by global warming. As global warming increases, the intensity and frequency of extreme weather events are likely to increase. **The Intergovernmental Panel on Climate Change (IPCC) has issued a report stating that every 05 Warming will lead to a significant increase in the frequency and intensity of extreme heat events.
Although the strong cold wave and global change are contradictory phenomena of "counter-intuitive", they are essentially two sides of the same coin. Zhou Bing, chief expert of climate services at the National Climate Center, said in an interview that due to the rapid melting of Arctic sea ice, the atmosphere over the Arctic region absorbs heat in winter, and the amplification of Arctic warming is prominent, which aggravates atmospheric instability. The atmosphere is characterized by circulation, and once the cold air mass deviates from the polar region, it is easy for the strong cold air at high latitudes to invade southward. Cold snaps, blizzards, cold waves, and strong cold air occur from time to time, and the so-called "warm Arctic, cold Eurasia" phenomenon occurs in winter.
At the same time, due to global warming, there is more water vapor in the atmosphere, and when cold and warm air masses meet, more energy is released, making blizzards sometimes more intense. Wei Ke, a researcher at the Institute of Atmospheric Physics of the Chinese Academy of Sciences, once pointed out that climate change is one of the most cutting-edge issues in the global scientific community. It is important because its long-term impact could last for millennia, and it is urgent to take more effective and positive action. (The reporter is Zhong Yin, Wen Xu Yang).
*: Modern Express New**.