National Climate Center: Since September, most areas in the middle and lower reaches of the Yangtze River have suffered in summer and autumn drought

Cover news reporter Teng Yan

On September 29th, at the press conference of the October of the China Meteorological Administration, Xiao Yan, deputy director of the National Climate Center, introduced that due to the lack of precipitation and high temperature, severe summer drought in the Yangtze River Basin this summer. Since September, the middle and lower reaches of the Yangtze River have been It is still raining, and the meteorological drought in most areas continues, and it suffers from summer and autumn.

On September 28th, the monitoring of meteorological drought shows that most of the middle and lower reaches of the Yangtze River Basin still exist in moderate and above meteorological drought. Among them, most of them, central Fujian to north, central Hunan to southern Hunan, eastern Hubei, southern Anhui, south of Zhejiang There are special droughts.

High temperature and rainstorm are the climate characteristics since September. Data show that the national average temperature is 18.1 ° C, which is 1.0 ° C higher than the same period of the year, and is the second highest in history since 1961. The national average precipitation was 47.2 mm, which was 24.1%less than the same period of the same year, and it was the third less in the same period.

There are 91 national meteorological stations in the country's maximum temperature breakthrough or flat in autumn. Among them, Tocoson (42.6 ° C) in Xinjiang exceeds 40 ° C. A total of 21 national meteorological stations in the country exceeded the polar value of September, of which 13 stations such as Shandong Fushan (167.0 mm) and Liaoning Pikou (157.9 mm) broke the autumn pole value. Essence

Since September, there have been three regional storms in the south. Among them, the comprehensive intensity of the heavy rain process from September 15th to 16th reached medium intensity, covering an area of ​​199,000 square kilometers, affecting the population of 120 million. Live rainfall appeared in Shanghai, Jilin, Shandong, Jiangsu, Zhejiang, Liaoning and other places, with cumulative precipitation exceeding 100 mm, of which the cumulative precipitation of Shandong Qixia Station reached 262.4 mm. Two storms on the 8th and 20th eased the drought in the eastern and northern parts of South China.

Since September, there have been two regional high temperature process in the south. Among them, the comprehensive intensity of the regional high temperature process from September 5th to 13th reached a special strength, covering the land area of ​​1.43 million square kilometers, affecting the population of 550 million, and the influence of 229 stations reached or exceeded 37 ° C. Reach 40.3 ℃. "These two high temperatures have exacerbated the meteorological drought in the middle and lower reaches of the Yangtze River, increased the local power supply pressure, and caused a negative impact on the local ecosystem." Xiao Yan said.

In terms of typhoons, there are 7 typhoons in September, which is 2 more than the nearly 30 years (1991-2020) in September, and 1 typhoon has been available, which is 0.7 less than usual. Typhoon No. 12 "Plum Blossom" from September 14th to 16th, he landed 4 times in Zhejiang, Shanghai, Shandong and Liaoning in China, breaking the northernmost record of typhoons since the founding of the People's Republic of China. Typhoon brings heavy rain to my country's East China and Northeast China, and there are heavy rainstorms in Zhejiang, Shandong and other places.

In addition, since September, my country has occurred twice in China. Among them, the comprehensive intensity of the process of the 19th to 21st reached a strong level, which affects the area mainly in Northeast, Inner Mongolia and other places. Most areas of Northeast China and eastern Inner Mongolia are above 10 ° C. The range is above 14 ° C.

- END -