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The highest temperature in Chengdu history

The highest historical temperature in Chengdu is over 40℃.

According to the Sichuan Climate Center, according to the traditional calendar of China, the first day of the first rainy season this year is July 13. At present, there is still a week or so before autumn, and the high temperature weather comes early and is fierce. Is this normal?

Lv Dong, chief forecaster of Sichuan Meteorological Observatory, said, "It is really rare, and the specific situation needs to be judged by Sichuan Climate Center." According to the current data of Sichuan Climate Center, this continuous high temperature is the widest and strongest this year.

Up to now, 60 county stations in the province have the highest temperature in the same period in history. On July 6th, high temperature weather occurred in Chengdu 15 county station, among which 14 county station was the highest in the same period in history, and 3 county stations were the highest in history, with Jianyang reaching 40.4℃.

Sichuan basin is most obviously affected by continental high pressure.

Nationwide, in the real-time temperature of the National Meteorological Observatory on July 6 17: 24 18, Sichuan successfully overheated Turpan, and the hottest TOP3 in China was all in Sichuan, followed by 40.5℃ Yibin Gaoxian, 40.3℃ Leshan Mabian and 40.3℃ Chengdu Jianyang. Yesterday, the highest temperature in Chengdu appeared in Jianyang, at 40.4℃.

Why can Sichuan beat other cities this time and become the hottest in the country? Lu believes that all this depends on the influence of the Qinghai-Tibet Plateau. "From a national perspective, the continental high pressure in our Sichuan Basin is the most obvious, and the main influence range of the Qinghai-Tibet High is in and around the Sichuan Basin."

As for the principle of high temperature, Lu Dongxue explained that, first of all, the descending airflow is formed under the control of continental high pressure, and the atmosphere is from high altitude to low altitude. The lower the air pressure at high altitude, the higher the air pressure at low altitude, the air mass compresses from high altitude to low altitude, and the temperature naturally rises. Secondly, under the control of high pressure, the weather is mainly sunny and partly cloudy, and the warming effect of solar radiation will be very obvious.