Beijing is too cold.
Zhang Mingying, a senior engineer of the Municipal Meteorological Observatory, told the Morning Post reporter that the temperature in early February of 65438 this year was 2.7℃ lower than normal. In previous years, such "cold" weather generally appeared from the end of February to the beginning of October. In other words, Beijingers tasted this degree of cold more than half a month earlier than normal people.
The temperature has not exceeded freezing point for four consecutive days.
At the beginning of 65438+February, especially last week, the temperature in North China continued to be low, "non-Sanjiu, better than Sanjiu". From 5th to 8th, the temperature in Beijing has not climbed to zero for four consecutive days. The lowest temperature in the morning is about -9℃, and the highest temperature in the day is not more than-1℃ except that it barely reaches 0℃ on the 7th.
Strong cold air mass leaves Beijing and the temperature rises.
Zhang Mingying, a senior engineer of the Municipal Meteorological Observatory, analyzed the reasons and said that the capital was cold in June+early February of 5438. The main reason is that the strong cold air mass is located in the south and entrenched at about 45 degrees north latitude, which is easy to affect Beijing. It constantly splits small cold air and creates strong winds for Beijing to cool down. Yesterday, the temperature in Beijing began to rise, and the highest temperature returned to above freezing point. It is precisely because the powerful cold air mass moved out of Beijing that the capital was controlled by the warm air mass. In addition, the snow came early this winter, which took away the surface heat in advance, making people feel colder in the following days.
The Municipal Meteorological Observatory predicts that the temperature will warm up in the first half of this week, but there will be light snow during the day on Thursday, and the temperature will drop. Although the temperature has picked up, the degree of cold remains unchanged, but it has been reduced compared with last week. On the whole, it is predicted that the low average temperature will decrease this week, which is about 1℃ lower than normal.
It remains to be seen whether it is difficult to say "cold winter"
Statistics from the Municipal Meteorological Observatory show that from last Monday to Saturday, the average temperature of the observatory in the southern suburbs was -3℃, which was 3.2℃ lower than normal, 2.6℃ lower than last year and 3.5℃ lower than the last decade of climate warming. Zhang Mingying said that the coldest time in Beijing in a year is 65438+ 10, and the temperature last week should appear from the end of February to the beginning of 10. "It can be said that this cold was more than half a month ahead of schedule."
From the comparison of the historical average temperature of Beijing in June 5438+February 1 ~ 8, the statistics of the Municipal Meteorological Observatory show that the average temperature of June 65438+February 1 ~ 8 is -2.7℃, which is the highest since June 1998 (June1.
As for whether this winter is a "cold winter", the Municipal Meteorological Observatory takes 65438+February-February as the winter for data statistics every year. It seems that this winter has just begun, which remains to be seen.
Experts dispel doubts
Last week's "severe cold" was not uncommon.
Regarding the "harshness" of last week, Zhang Mingying said that such cold is not unusual. At the same time, she reminded the public that despite the arrival of the heating group, the public may feel even colder.
First, don't be afraid of the cold. Zhang Mingying said that the climate is always hot and cold. Although it was cold last week, it may return to warmth in the future. "Cold half a month in advance" doesn't mean it will always be so cold.
Second, it is not unusually cold. Compared with the extreme years in history, it is still "not enough to see". The lowest temperature in Beijing history-13.6℃ appeared at the beginning of 65438+February, while the lowest temperature last week did not exceed-10℃.
Third, beware of air deterioration after cold air leaves. Zhang Mingying said that although it was very cold last week, it was sunny, sunny and the air was better. With Beijing changing to heating air mass control, air pollution will be aggravated, which will affect the warming effect of solar radiation. In addition, with the increase of air humidity, people's feelings may turn to "cold".