Warm winter or cold winter? , Beijing started heating 9 days in advance, and the temperature "dived" from 25℃
Last night, the Beijing Urban Management Committee issued a notice that, based on the results of meteorological consultations, Beijing will conduct a trial operation and start heating at 0:00 on November 6. The heating time is 9 days earlier than the specified date.
Just a week ago, the average daytime temperature in Beijing was close to 25°C, causing many people to question: "It's already November, should I wear short sleeves or long sleeves?"
Since September this year, the global average temperature has indeed been higher than in previous years. The September monitoring report released by the World Meteorological Organization shows that the global average temperature in September this year reached 16.38°C, which was 0.5°C higher than the historical highest value in September 2020, making it the "hottest September in history."
Entering October, the temperature in the Northern Hemisphere remains high. In China, on the last day of October, high temperatures above 30°C were generally recorded in the Yangtze River Basin, South China, and southern North China.
Industry insiders believe that it is not unusual for temperatures in southern China to exceed 20°C at the end of October, but for northern China, temperatures above 25°C are unusual.
Jia Xiaolong, deputy director of the National Climate Center, said at a press conference held on November 3 that in October, the national average temperature was 12.2°C, 1.6°C higher than the same period in normal years, and the highest for the same period since 1961. Most of Northeast China, most of Shandong, most of Inner Mongolia, and most of Xinjiang were 2°C to 4°C higher. The temperatures in Inner Mongolia, Xinjiang, Tianjin, and Liaoning were all the highest for the same period in history. The daily maximum temperature at 140 national weather stations exceeded 10 Monthly historical extreme value.
Just after October, China immediately experienced the hottest November 1 since meteorological records began. Meteorological monitoring from the Central Meteorological Observatory shows that on November 1, 11 provincial-level administrative units across the country broke the provincial record, and 705 national-level weather stations broke or tied the November record, accounting for 30% of the total number of weather stations nationwide.
According to statistics from "Chinese Weather Enthusiasts", on November 1, Hebei and Shandong recorded 30°C for the first time in November. Seven provincial capital cities broke the highest record in November. Jinan was 10°C warmer and Linqu reached 32.1°C.
However, within a week, the temperature in North China began to plummet. On November 2, the lowest temperature in urban Beijing was close to 0 degrees, and the highest temperature dropped to single digits. The Central Meteorological Observatory also issued the first nationwide cold wave warning for the second half of this year.
Faced with the coming cold wave, Beijing started heating in advance. Does this mean Beijing will experience a cold winter?
Meteorological experts believe that the main reason for the strong cooling this week is that the early warm air was too strong, thus giving the cold wave a huge space for cooling. Analysis by "Chinese Meteorological Enthusiasts" believes that after this cold wave, except for northeastern my country and northern Xinjiang, most other areas of the country will turn from extremely warm to moderately warm.
Jia Xiaolong said that whether it is a warm winter depends on whether the temperature can reach the standard of warm winter. Currently, the equatorial central and eastern Pacific has entered an El Niño state, and an El Niño event is about to form. Affected by this, abnormal anticyclonic circulation prevails in the lower troposphere over the northwest Pacific and South China Sea in winter, the East Asian trough is weak, and the East Asian winter monsoon is weak. "The temperature in most of central and eastern my country is higher than the same period in normal years."
In addition, the abnormal anticyclonic circulation is conducive to the transport of warm and humid water vapor from the tropics to southern my country. In conjunction with the movement of cold air southward, it is easy to cause excessive precipitation in the southern region.
Jia Xiaolong pointed out that under the background of the El Niño event, winter temperatures fluctuate greatly, and the number of cold air affecting our country will be more than before. Therefore, all walks of life need to pay close attention to the possible adverse effects of periodic low-temperature rain and snow weather processes.
