Why is it so hot this summer?China Meteorological Administration: The root cause is--

The monitoring of the National Climate Center shows that since June 13, the process of regional high -temperature weather has emerged in my country, with a wide range of scope, long duration, strong extremes, and great influence. As of July 12, the high -temperature incident has lasted 30 days, covering a land area of ​​50.21 million square kilometers, which has a population of more than 900 million people.

Especially on July 7, the high temperature of the south protruded, Jiangsu, Zhejiang and Shanghai Free Shipping District and Sichuan -Chongqing have become the national high temperature centers. High temperatures above 40 ° C appeared in many places, and high -temperature historical records were frequently broken.

Not only in China, high -temperature weather appears in many places in the northern hemisphere.

Fu Jiaolan, the chief forecaster of the Central Meteorological Observatory, said that since the beginning of the 21st century, the summer high -temperature heat wave incident in the northern hemisphere has become increasingly frequent. Global warming is the root cause of frequent high -temperature heat wave incidents.

According to the monitoring of the National Climate Center of the China Meteorological Administration, in June of this year, the average global temperature was about 0.4 ° C higher than usual, the highest since 1979. Among them, northern Russia, western Europe and other places above 2 ° C, France, Spain, the United States, the United States Refresh high temperature records with many cities such as Japan.

The sixth evaluation report of the Special Committee for Climate Change of the United Nations Government pointed out that in the past 50 years, global warming has occurred at unprecedented speeds in the past 2000. The climate system is unstable. Human red alarm ".

Relevant experts from the National Climate Center said that global warming is a frequent climate background in the high -temperature heat wave incident in the northern hemisphere, and the abnormal atmospheric circulation is the direct reason for the frequent high -temperature heat waves in the world since June.

Since June this year, over the subtropical region of the northern hemisphere, the Western Pacific subtropical high -pressure, Atlantic high -voltage, and Iran's high -voltage average increasingly enhanced, thereby forming a large -scale global heating high -pressure zone. Under the control of warm and high voltage bands, the air current is prevailing, which is conducive to the heating of the ground. In addition, under the action of a large -scale high -voltage belt, the air is dry and the cloud is not easy to form. , And strong intensity, which causes high temperature heat waves in the northern hemisphere.

本文转载自微信公众号『北京日报』，来源：中国天气、央视新闻客户端 />

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