Recently, most parts of China have experienced "freezing to purple" weather. **The Meteorological Observatory forecasts that the temperature in most parts of China will continue to be low in the next 5 days, and the local daily minimum temperature will be more than 7 lower than that of the same period in history. Why has the temperature continued to be low recently?What is the weather like later this winter?
* The Meteorological Observatory forecasts that in the next 5 days, the temperature in most parts of China will continue to be low, from 8 o'clock on the 18th to 8 o'clock on the 21st, the daily minimum temperature in northern Xinjiang, the central and eastern parts of Northwest China, Inner Mongolia, North China, Northeast China, Huanghuai, Jianghuai, Jianghan, northern Jiangnan, Guizhou and other places will be more than 5 lower than the same period in history, and the daily minimum temperature in some areas will be more than 7 lower than the same period in history, and the minimum temperature 0 line will be located in the area from southern Guizhou to northern Jiangnan.
On December 16, affected by the cold wave weather, the temperature in Beijing dropped sharply, and the maximum temperature was only minus 7. The picture shows people walking in cold weather. Photo by China News Service reporter Jia Tianyong.
*The Meteorological Observatory continued to issue a yellow warning for low temperatures at 6 o'clock on the 18th.
Recently, China has been continuously affected by strong cold waves and strong cold air, so the temperature in most areas has continued to be low. * Xu Jun, chief forecaster of the Meteorological Observatory, said in an interview with a reporter from China News Service.
She said that from the 13th to the 16th, China suffered a strong cold wave, most areas showed 6 to 12 cooling, and some areas cooled more than 14, around the 14th, the strong cold wave process made the northern part of Xinjiang, the eastern part of the northwest region, Inner Mongolia, North China, Northeast China, Huanghuai, the eastern part of the Jianghuai River, and the eastern part of the Yangtze River appear The daily average temperature or daily minimum temperature is lower than that of the same period in normal years.
After the end of the strong cold wave from the 13th to the 16th, most of China was still controlled by the cold air mass, and the cold tone continued. Xu Jun said that there were slight signs of warming on the 17th, but from the 18th to the 20th, a new round of strong cold air will affect the central and eastern parts of China, affected by it, most of the central and eastern regions will have 4 to 8 cooling, and the local cooling may reach more than 10, and this round of cooling not only affects the north, but also the temperature in the south of the Yangtze River and the eastern part of South China will drop significantly.
Recently, people in many places have felt that the weather is "unusually cold".
On December 11, Urumqi City, Xinjiang ushered in a snowfall weather, the temperature plummeted, and the low temperature reached minus 10. With the arrival of a strong cold air, the temperature in the city has gradually decreased, and the average temperature has been below 0 for many consecutive days, officially entering winter. It is understood that the perennial average winter period in Urumqi is around November 13, and this year's winter period has set a new record in history. The picture shows that the cold air is coming, and snowflakes are falling in Urumqi. **Photo by reporter Liu Xin.
Xu Jun said that the cold wave is a common disastrous weather in China, which will cause a sharp drop in temperature when it hits, accompanied by strong winds, rain and snow, and have a serious impact on industrial and agricultural production and people's lives. The cold wave from the 13th to the 16th was a strong cold wave.
Severe cold spells are uncommon compared to ordinary cold air and cold spells, but there have been strong cold spells in the past. For example, in early 2016, there was a "century cold wave" in China, which caused widespread cooling, rain and snow and other adverse effects, Xu Jun said.
Xu Jun said that due to the strong cold wave from the 13th to the 16th, on the morning of the 17th, the daily minimum temperature of many weather stations in North China fell below the historical extreme value in December since the establishment of the station.
At present, a moderately severe El Niño event has formed. People have the impression that El Niño is often associated with warm winters, and in the context of global warming, China has seen warm winters more and more frequently.
Previously, the temperature in most parts of China this winter will be close to the same period of the year or high, the first winter is warmer, the latter winter is close to the normal year, and the probability of a warm winter in the north is high.
In response to the recent large-scale cold wave invasion of China, Lu Er, a professor at Nanjing University of Information Science and Technology, said that warm winter and cold winter refer to the overall temperature conditions throughout the winter. Warm winters don't mean there are no cold spells, and even El Niño years don't rule out the possibility of cooler winters and strong cold spells. For example, in January 2016, during the Super El Niño event, China also experienced an extreme cold wave. "Cold spells and blizzards are weather processes, the immediate cause of which is anomalies in atmospheric circulation. A single cold spell and blizzard may not be too directly related to El Niño. ”
The El Niño, which is currently forming over the tropical Pacific Ocean, is a large climatic backdrop. Overall, El Niño affects global atmospheric circulation, making many places prone to extreme weather and climate events, Lull said. To some extent, the blizzard and severe cold spell can be seen as a manifestation of the extreme climate in the context of El Niño.
Xu Jun said that in the next 5 days, most of China will maintain a pattern of continuous low temperatures, and then the northwest region will begin to warm up before the central and eastern regions, and the continuous low temperature in Xinjiang, western Inner Mongolia and western Gansu is expected to end around the 22nd, and the central and eastern regions are expected to begin to warm slowly on the 23rd, and the temperature will reach a state close to the same period of the year (late December) around the 25th.
Xu Jun said that the temperature has continued to be low recently, and the public needs to pay attention to cold protection and warmth, especially for vulnerable groups, susceptible people and outdoor workers. In the near future, there will be rain and snow in Jianghuai, and there will be some freezing rain in Guizhou, Hunan and other places, which will easily cause slippery roads, and the public should pay attention to travel safety. (*China News Network).