The highest temperature breaks the historical value of 18 provinces!How long does it take to get hot?To what extent will it be hot?Meteorological experts comprehensively interpret

On August 19, the Central Meteorological Observatory continued to issue high -temperature red warnings. This is the 30th day since the high -temperature warning was issued on July 21, and it was also the 8th day of the high -temperature red warning.

The heat waves are not only sweeping China. From April to May, high -temperature heat waves attacked India and Pakistan, and the average highest temperature in some areas of India set the highest record in more than a hundred years; since July, Europe has encountered rare high temperature weather and frequent wild fires, and the high temperatures that break the records have caused Portugal and Portugal and the record. More than 1,700 people died in Spain, and Britain recorded the temperature for the first time since the temperature broke through 40 degrees Celsius ...

The entire northern hemisphere seems to be entering the "barbecue mode". How long will it last? To what extent will it be hot? Why can't the "La Nina phenomenon" that cools down the world not cooling the earth? In response to the concerns of the above public opinion, Zhai Jianqing, a researcher at the Meteorological Disaster Risk Management Office of the National Climate Center, responded in detail.

↑ High -temperature weather data matching picture. According to IC Photo

High temperature above 35 ℃ covers 4.5 million square kilometers in my country

Meteorological expert: At present, the end of the high temperature is not found

In the past month, high -temperature weather above 35 ° C covered the area of ​​4.5 million square kilometers in my country. Red Star News reporters combed and found that the large -scale high -temperature high temperature burned the places including Sichuan and Chongqing, Jiangnan and other places. Among them, Hangzhou, Nanchang, Shanghai, Fuzhou, Chongqing, Changsha and other places exceeded 25 days, and more than 200 countries' observation stations broke through the highest temperature history of the highest temperature.

The high -temperature heat wave process has the characteristics of long duration, wide range, strong strength, and strong extremes. According to the monitoring and evaluation released by the National Climate Center on August 17, the comprehensive intensity has reached the strongest meteorological observation record since June 13 this year since June 13 this year.

However, high temperature weather did not stop in autumn. According to the forecast of the China Meteorological Administration, most of the southern areas will still maintain high temperature and rainy weather in the next three days, and meteorological drought will continue to develop. For example, on the 19th, the highest temperatures in southern Shaanxi, eastern Sichuan, most of Chongqing, western Hubei and southeast, central Hunan, central Jiangxi, central Zhejiang, and southeast Anhui can reach above 40 ° C.

In addition, from August 18-25, high temperatures in the Sichuan Basin, Jiangnan, Jianghan, Jianghuai and other places will continue. The cumulative high temperature number can reach 5 to 8 days, the maximum temperature reaches 34-38 ° C, and the local area exceeds 40 ° C.

So, how many cities in this round of heat waves have exceeded the historical extreme value? Red Star News reporters have not fully statistics found that the highest daily temperature in the following cities "refresh records" for the first time -Hubei Zhushan has a temperature of 44.6 ° C on August 13; , Fengjie, Jiangjin, Wuxi; Hebei's Tancheng, Lingshou, Zhengding; the highest temperature in Yanjin and other places in Yunnan has stood at a pass of 44.0 ° C.

How long will this high temperature last? Zhai Jianqing told the Red Star Journalist that according to comprehensive research and judgment, by 26 to 27, the high temperature range in the morning will shrink and the intensity will also weaken. "But this round of high temperature is estimated to last until the end of August, and no high temperature ending point is found at the end of August." Zhai Jianqing said.

The maximum temperature of 18 provinces and cities breaks the historical pole value

Meteorological expert: The weather is indeed abnormal this year, and the probability of some regions will not break 45 ℃

According to the recent monitoring and evaluation results of the National Climate Center, from June 13th to 19th, the regional high -temperature heat wave incident has continued for 67 days, reaching the longest time since 1961. From the scope of the influence, the site exceeding 35 ° C has reached 1683, and the sites exceeding 37 ° C have reached 1429, which has become the second in history after 2017. (At present, a total of 2440 national meteorological sites)

Zhai Jianqing pointed out that from the perspective of the coverage of the highest temperature, this year's high temperature abnormal phenomenon is even more obvious. According to the statistics of the China Meteorological Administration, the coverage of the temperature exceeding 40 ° C has reached the largest history; the number of high -temperature pole stations at high temperatures reached 294 stations, and it also reached the largest history.

In addition, according to Red Star Journalists, the temperature in 18 provinces has exceeded historical extremes, including Sichuan, Hubei, Jiangsu, Zhejiang, Fujian, Shaanxi, Chongqing, Qinghai, Anhui, Jiangxi, Hunan, Xinjiang, Guizhou, Tibet, Tibet, Tibet, Tibet, Tibet, Tibet Guangdong, Henan, Guangxi.

In Zhai Jianqing's view, compared with previous years, this year's high -temperature weather is indeed abnormal. He told reporters that it is normal to occur in high temperature heat waves in summer, but this summer's high -temperature heat wave incident, whether it is durable or intensity, and the scope of influence, has reached a strong level.

As for the cause of high temperature weather, Chen Tao, chief forecaster of the National Meteorological Center, previously pointed out in an interview with the media that the situation of the atmospheric circulation, especially the abnormality of the high pressure of the Western Pacific subtly, is the most important reason.

Chen Tao said that from the perspective of monitoring, this year's Western Pacific subtropical high -pressure range is large and strong. Under its control, the southern region of my country is controlled by the sinking air, and the sky is clear and cloudy. Under the influence of Rizhao radiation during the day, the near the ground was heated strongly, and the heat was stranded on the ground.

So, to what extent will it be hot? In this regard, Zhai Jianqing said that it is not yet possible to predict whether the maximum temperature of accurate accuracy will break the record. But in his personal opinion: "The highest temperature recorded by the Chongqing Beiyi Station has reached 45.0 ° C. I personally think that the possibility of continuing to rise is not much."

Meteorological experts: Three "high -pressure giants" meet, all of which are staged to enhance the situation

In fact, the areas that are swept by high temperatures are not only limited to China, but most countries and regions in the northern hemisphere also have high -temperature abnormal weather to varying degrees.

According to the results of domestic and foreign meteorological observations, including my country, such as Europe, North Africa, South Asia, West Asia, the United States, the Middle East and other regions, they have also been attacked by heat waves, and Portugal, Japan, and the United States have also experienced high -temperature breaking records.

Specifically, from April to May, high -temperature heat waves attacked India and Pakistan, and the average maximum temperature in some areas of India set the highest record in more than a hundred years; since July, Europe has encountered rare high temperature weather in many places in Europe and has frequent wild fires. High temperatures caused more than 1,700 people in Portugal and Spain, and Britain had recorded the temperature for the first time since the temperature broke through 40 degrees Celsius ...

What are the reasons for the northern hemisphere to fall into the "barbecue mode"? In Zhai Jianqing's view, global warming is a major background of frequent high -temperature heat waves in the northern hemisphere this year. He analyzed that in the case of global warming, many extreme weather and climate events have been observed since the middle of the 20th century, and of this, high -temperature heat wave frequency is a significant feature.

In response to the hot weather in the northern hemisphere in the near future, Zhai Jianqing said that the abnormal atmospheric circulation is the direct cause of frequent high temperatures in many places around the world since June.

Specifically, Zhai Jianqing pointed out that since June, over the subtropical regions of the northern hemisphere, the Western Pacific subtropical high -pressure belt, Atlantic high -pressure belt, and Iran's high -pressure, three major "high -pressure giants" have met, and the average phase is enhanced, which has formed a large scale. Global heating and high pressure.

Zhai Jianqing explained that under the control of warm and high -voltage belt, the prevalence of sinking air is conducive to the heating of the ground. In addition, under a large -scale high -voltage zone, the air is dry, it is not easy to form clouds. The intensity is strong, which has caused continuous high -temperature heat waves in the northern hemisphere.

However, some netizens asked questions that while the La Nina phenomenon appeared (referring to the periodic cooling of the surface temperature of the central and central ocean surface in the Equatorial Pacific.) At the same time, why was the northern hemisphere not "cooled"?

In this regard, Zhai Jianqing explained that the phenomenon of La Nina will be extremely low, which can make "briefly cooling the world." However, due to the abnormal and "joining" of the above three major high -pressure bands this year, coupled with the global warming background, the common effect of the phenomenon of the Panana phenomenon will become stronger Cooling.

Red Star reporter Yang Yuxi Zhang Yanliang Beijing report

Editor Deng Yiguang Editor Yang Cheng

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