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Experts say that the north is still cold in May is indeed abnormal To reveal the reason behind it: the temperature will rise to 30 ° C

via:凤凰网     time:2022/5/15 11:02:29     readed:63

May is more than halfway through, after the summer in many areas in the north still feel "cool", some netizens joked: "wear short sleeves in the spring, wear autumn pants after the summer, the four seasons are more and more willful."

Zhang Tao, chief forecaster of the Central Meteorological Observatory, said that the performance of atmospheric circulation in the entire Asian region for a period of time around the beginning of summer this year is indeed abnormal, and for our country, it is characterized by abnormally active and strong cold air.

"Under the impact of multiple rounds of cold air, it is relatively rare in this season that the boundary of large-scale continental dry air mass invading the south can reach the north-central part of the South China Sea and extend west to the west to western Yunnan." Zhang Tao said that in the context of summer, the temperature in the north and parts of the south is cold, especially compared with the warm and even hot situation in the same period of the year, this year's coolness is indeed more abnormal.

In early May, the temperature in the north and south was upside down, and the warm heat rarely seen in early May appeared in some areas. At 14:00 on May 2, Beijing warmed up past Guangzhou, and Kunming was colder than Changchun. At about 14:49 on May 5, the temperature in Yinchuan, Ningxia, even soared to 35.6 °C, becoming the first provincial capital city in the north to break through the high temperature line this year, nearly a month and a half earlier than the usual average.

In early May, 167 national weather stations broke records for the lowest ever-high daily temperatures in the same period of history, and these places experienced the coldest recorded early May. In Beijing, for example, the average maximum temperature in Early May was 24.9 °C, but the highest temperature in Beijing on May 8 was only 13.7 °C.

According to Shi Yan, a meteorological analyst at the China Weather Network, the reason for the low temperature in the north is mainly the continuous suppression of two cold airs. First of all, the last wave of cold air (May 6-8) has just ended, a new wave of cold air has followed, and the temperature has dropped again and again; in addition, after the influence of the last wave of cold air, most of the northern sky has not been completely cleared, and the cloud volume has increased, resulting in a decrease in ground radiation warming, low temperatures in most areas, and the maximum temperature in many parts of North China has continued to be less than 20 °C. Under the premise of low temperatures, the current cold air is further suppressed, resulting in rare low temperatures in some places during the same period.

Professor Sun Yang of the Institute of Atmospheric Physics of the Chinese Academy of Sciences told Health Times: "Whether the abnormal weather in May is related to climate warming is not easy to say, and the reason for the abnormal weather is not clear."

The good news is that the North will go into warming mode next week.According to the forecast of the National Meteorological Administration, early next week, with the end of the influence of cold air, most of the north will launch a wave of temperature rebound, the long-lost warmth will gradually return, and the maximum temperature in the central and eastern parts of the northwest region, north China and Huanghuai will rise to about 30 ° C.

专家称五月北方还偏冷的确反常 揭秘背后原因:下周气温回升至30℃

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