Sichuan has been hot in Turpan, and the temperature breaks in many places. Why is it so hot this year?

The maximum high -temperature weather this year is coming

Right now, the maximum high temperature this year is affecting my country. Since July 6, high temperature weather has appeared in many places in the Sichuan Basin, and even breaking the highest temperature record of the year. At the same time, Xinjiang, eastern part of the Northwest, eastern part of the South, North China, Huanghuai, Zhejiang and other places have appeared above 35 ° C. Essence

Meteorological experts said that the high -temperature weather range, strong intensity, and long duration, affected by the subtropical high -pressure west extension, the range of high temperature weather in the future will be further expanded, and continuous high temperature weather will occur in most of the south.

Sichuan has hot Turpan, high temperature weather is long standby

In the past few days, Sichuan high -temperature weather has continued, and even a "high fever" appeared in the basin. According to statistics, in the real -time temperature at 17:00 on July 6th at 17:00 on July 6th, Sichuan has successfully hot Turpan.

In Chengdu, Sichuan, children played in a fountain. On the same day, Chengdu ushered in high temperature weather. Figure/Zhongxin Picture Network

On this day, the three hottest cities in the country are in Sichuan. Among them, the highest temperature in Gaoxian City in Yibin reached 40.5 degrees, and the maximum temperature of 40.3 degrees at Matian Yi Autonomous County and Jianyang City, Leshan City reached 40.3 degrees.

The roasting mode made the Sichuan basin the "red oil pot bottom", and the locals shouted "it is almost familiar." In the video shot by a netizen, a dog was scalded back and forth by the ground; some netizens teased, a cold dish was mixed outside, and it felt ate for the dishes.

The National Emergency Broadcasting Network also shows that recently, Sichuan has released hundreds of high -temperature warning signals. As of 16:00 on July 8th, a total of 113 high -temperature warnings were issued on the same day, of which 30 were high -temperature red warnings.

It is understood that the signal of high temperature early warning is divided into three levels, which are represented by yellow, orange, and red. The standard for high -temperature yellow warning signals is that the highest temperature for three consecutive days will be above 35 ° C; the high temperature orange warning signal will rise to the highest temperature within 24 hours. The standard for high -temperature red warning signals is that the highest temperature within 24 hours will rise to above 40 ° C.

In terms of meteorology, the temperature can be called "high temperature weather" when the temperature is above 35 ° C. If the maximum temperature exceeds 35 ° C for a few days in a row, it can be called "high temperature heat wave". High -temperature heat wave refers to a meteorological disaster that has a continuous high temperature process. Due to the longer temperature duration, causing people, animals and plants to adapt and cause adverse effects.

Lu Xuedong, chief forecaster of Sichuan Meteorological Observatory, told the media that the high temperature weather process in Sichuan Province was mainly related to the long -term control of Sichuan high -pressure control on the mainland. "When the atmosphere is prevalent, the air is sinking. When the gas block sinks, the air pressure is low, the lower air pressure is high, and the gas block will be compressed, resulting in the increase in its internal energy and the rise of the temperature. In addition, the sunny air radiation effect will jointly promote the increase in temperature. "

China Weather Network pointed out that North Africa-Iran's high pressure will develop eastward and high pressure on the mainland. A strong heating high pressure is formed on the western plateau in my country. High temperature. In the future, North Africa-Iran's high-pressure and high pressure on the mainland may even be connected with the subtropical high pressure, resulting in a large-scale high temperature.

In addition to Sichuan, since July 6, high temperature weather above 35 ° C in Xinjiang, eastern part of the northwest, eastern part of the country, northwest, North China, Huanghuai, Zhejiang and other places has also appeared.

Fu Jiaolan, the chief forecaster of the Central Meteorological Observatory and senior engineer of Zhengyan -level, said that the high temperature weather process is the most influential high -temperature weather this year, which has the characteristics of widely influencing scope, strong intensity, and long duration. The highest temperature in some areas in the eastern part of the southwestern region will approach or break through the extreme value of the same period, and high temperature weather in some areas will last for 10 days or more.

Fu Jiaolan said that due to the influence of the subtropical high -pressure west extension, the scope of high temperature weather in the future will be further expanded, and continuous high temperature weather will occur in most of the south.

Will high temperature weather be normal?

In fact, since mid -June this year, a large -scale high -temperature weather process has appeared in my country.

On July 8th, at the routine briefing meeting of the State Council held by the Flood Control and Disaster Rescue Work held by the National New Office, Wang Yawei, the head of the Emergency Disaster Reduction and Public Service Department of the China Meteorological Administration, said that the average temperature in my country in June was 21.3 ° C, which was 0.9 higher than the same period of the same year. ℃, the highest history since 1961. Among them, Henan, Shaanxi, Gansu, Ningxia, Shanxi, Shandong, Jiangsu, and Anhui all have the highest temperature in June in June.

Since June 13, the regional high -temperature weather process has been maintained, with strong high temperature intensity, long duration, extensive influence, and a large impact. On June 25, 90 and 29 national meteorological stations in Hebei and Henan Province reached or exceeded 40 ° C. Among them, Lingshou County in Hebei reached 44.2 ° C, which was the highest temperature this year.

On the streets of Chongqing, citizens traveled against the sun. Figure/Zhongxin Picture Network

Regarding the continuous high temperature weather since mid -June in China, Fang Xiang, deputy director of the National Meteorological Center, said that most of the northern parts of China are controlled by a strong heating high -pressure system, which prevails for sinking airflow. On the one hand It is conducive to the occurrence of sunny radiation, and the atmosphere is dry. During the day, the ground is affected by solar radiation, and the temperature is rising rapidly. The stable and maintenance of this circulation has led to continuous high temperature weather in the northern region. In addition, the westwest airflow also sinks in the east foot of Taihang, and it also plays an important role in extreme high temperature weather in Hebei, Henan and other places. Fu Jiaolan believes that large -scale high -temperature weather in summer is normal, but this year's high -temperature weather has a certain extreme in strength and duration, such as Sichuan, Gansu and other places to break through the historical extreme value.

Is this year's high -temperature weather advance? Yuan Yuan, chief and researcher at the National Climate Center Dating Dating, previously said that time was not too early, but was a little later. Taking Beijing as an example, compared with previous years, the cold air was more active in May and June this year, and the overall feeling was cool.

Fang Xiang also mentioned that the high -temperature weather process covered a wide range of coverage, long duration, and extremely extreme. High temperature and raining led to the sustainable development of Henan, Su, Anhui, Gansu, and Shaanxi. High temperature also affects new energy supply.

Due to the high temperature and long duration of this time, it has adversely affected power supply, production and living water, vehicle travel, and agricultural production. Fu Jiaolan suggested that all relevant departments need to pay attention to weather forecasting and early warning information, do a good job of power supply and water resource dispatch, and prevent cities and forest fires. Especially the high temperature duration in the middle and lower reaches of the Yangtze River requires strengthening defense work.

It is worth noting that global, Spain, Italy, Norway, Japan, Iran, and Finland have also recently appeared in high temperature weather. Yuan Yuan said that the high temperature weather in India and the United States is closely related to the strong and subtropical high -pressure system, while the high temperature in Europe and my country is mainly related to the strengthening of mid -latitude high -pressure spine.

Not long ago, the "Global Climate Condition of 2021" released by the World Meteorological Organization (WMO) mentioned that in the past year, the four key climate indicators of greenhouse gas concentration, sea level rising, marine heat and ocean acidization all set a new record. This is another obvious sign of changes in land, ocean and atmospheric changes in human activities worldwide, and will be harmful to sustainable development and ecosystems.

The above report also mentioned that 2015-2021 is the hottest 7 years since the record. In 2021, the concentration of greenhouse gas in the atmosphere continued to rise. Although the Lamina incident at the beginning of the year and the end of the year brought a temporary cooling effect, it did not reverse the overall trend of rising temperatures. The global average temperature was about 1.11 degrees Celsius higher than the level before industrialization.

In May of this year, the scientist Friedrick Otto, a scientist at the Institute of Gransem, the Institute of Technology of London, said in a report that before the artificial climate change began, it appeared in the South Asian region this year. The probability of high temperature weather is about every 3000 years.

Researchers from Otto and the World Climate Champion have found that so far, the reality of the global warming of 1.2 ° C has shortened the so -called regression period with extreme high temperatures similar to the duration and intensity of South Asia to a hundred years. But as the earth continues to heat up, the interval between this deadly heat wave will be further reduced. Researchers predict that if the average surface temperature of the earth will increase by 0.8 ° C compared with industrialization, it is expected that such heat waves will occur every 5 years.

Author: Wang Chunxiao ([email protected])

Edit: Li Zhiquan

- END -