China News Service, Beijing, September 21 (Chen Hang) The reporter learned from the Beijing Municipal Meteorological Department on the 21st that September 15 is the autumn day for Beijing this year, 6 days later than the same period of normal year.
The China Meteorological Industry Standard "Climate Season Division" stipulates that the five-day moving average temperature series of the current year is less than 22°C for 5 consecutive days, and the first date in the corresponding temperature series of the current year that is less than 22°C is used as the starting day of autumn. The starting date of the initial judgment is more than 15 days earlier than normal, and a second judgment of the starting date is required.
The Beijing Meteorological Department stated that the daily average temperature at Beijing Observatory Station dropped to 20°C on September 15, and the 5-day moving average temperature fell below 22°C for 5 consecutive days from September 16 to September 20. "Judgment, September 15 is the autumn day in Beijing this year, 6 days later than usual.
Many netizens said on Weibo that "I want to say goodbye to summer", "Beijing is so cold after autumn", "People on the road put on autumn clothes"...
In response to the late autumn, the Beijing Meteorological Department stated that due to the recent continued strong subtropical high pressure in the western Pacific and weaker cold air forces, the temperature in Beijing continued to be higher, which in turn led to the late autumn in Beijing this year than usual.
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