Many experts interpret the IPCC report:


　　extreme weather events will be more frequent in the future

　　◎Fu Lili, our reporter

　　In the next 20 years, the global temperature rise will reach or exceed 1.5°C.

In the work group report of the sixth assessment report recently released by the Intergovernmental Panel on Climate Change (IPCC), temperature is undoubtedly the focus of attention.

　　"And what cannot be ignored is that the probability of concurrent extreme events in many regions of the world will increase. Throughout the 21st century, the sea level in coastal areas will continue to rise, which will lead to more frequent and severe coastal floods in low-lying areas, and will The coast is eroded. The extreme sea-level event, which was once in a century, may happen every year by the end of this century." On August 18, the IPCC Sixth Assessment Report organized by the China Meteorological Administration, the first working group report media interview meeting , Said Zhai Panmao, co-chair of IPCC Working Group I and researcher at the Chinese Academy of Meteorological Sciences.

　　Since he participated in the preparation of the IPCC Sixth Working Group report in the early stage, Zhai Panmao has just returned to China and is still in isolation, so he can only participate online.

Across the screen, he can still feel his worries: In the future, high-temperature heat waves and droughts will occur concurrently, extreme sea-level events characterized by storm surges, ocean waves, and tidal floods, and compound flood events caused by superimposed heavy precipitation. Intensify.

　　In the future, eastern my country will be an area with high risk of extreme rainfall

　　The general public is more concerned about the impact of climate warming on China?

　　In this regard, Song Shanyun, director of the Office of the China Meteorological Administration and spokesman, said that China’s warming rate is higher than the global average, and global warming has had a significant impact on China, and the impact is different in different regions.

　　"On the whole, the impact of climate warming on China has different levels." Song Shanyun said. First of all, extreme events and extreme disasters have increased.

The extreme heavy precipitation events that occurred in Henan not long ago are very rare, and the daily precipitation, hourly precipitation and continuous precipitation have all broken historical records.

Extreme weather and extreme events pose increasing threats to the safety of human life and property.

Second, the degradation of ecosystems such as glaciers shrinking and permafrost melting.

When the ecosystem is destroyed to a certain extent, the entire human society, economic and social layout, production methods, and lifestyles will undergo fundamental changes.

　　In terms of regions, Chao Qingchen, deputy director of the National Climate Center, introduced that according to future climate change trends and differences in vulnerabilities and exposures in different regions, it is predicted that eastern China (from northeast to south China), where population and economy are concentrated, will have high extreme rainfall. Dangerous areas will bear higher climate risks.

　　In addition, the central region (from North China to South China and Northwest China) is a high-risk area for high-temperature heat waves; North China, the Loess Plateau, the eastern, northwest, and southwestern regions of the Qinghai-Tibet Plateau are high-risk areas for drought; the southwest, south China, and the loess plateau agricultural and pastoral transition zone The Songnen Plain is a high-risk area for natural ecosystems; Southwest China, the middle and lower reaches of the Yangtze River, and the northwest oasis are high-risk areas for food production.

　　"The rapid development of urbanization in my country and the continuously warming climate will further interact and bring about more significant impacts." Chao Qingchen said. For example, the combination of urbanization and extreme high temperature events will aggravate the severity of urban heat waves. Electricity use in cities poses huge challenges.

Urbanization will also increase the intensity of heavy rainfall in cities or downstream areas and the resulting runoff intensity, resulting in urban waterlogging.

For coastal cities, the combination of extreme rainfall and more frequent extreme sea-level events will increase the possibility of floods.

　　The human impact on the climate system is very clear

　　"It has been very clear for decades that the earth's climate has been changing, and the impact of humans on the climate system is also very clear." Zhai Panmao said.

　　Chao Qingchen also said that there is no doubt that human activities have caused the warming of the atmosphere, oceans and land.

The 50 years since 1970 is the warmest 50 years since 2000. From 1901 to 2018, the global average sea level rose by 0.20 meters, which is faster than any century in the past 3000 years. In 2019, the global carbon dioxide concentration reached 410ppm. , Higher than any time since 2 million years.

From 2011 to 2020, the global surface temperature has risen by 1.09°C compared with the period of the industrial revolution, and the increase of about 1.07°C is caused by human activities.

　　"Many climate system changes caused by greenhouse gas emissions in the past and in the future, especially changes in the oceans, ice sheets, and global sea level, are irreversible on the centuries to millennia scales." Chao Qingchen emphasized that only strong mitigation measures can be taken. Emission measures, under the scenario of achieving net zero carbon dioxide emissions around 2050, the temperature rise may be lower than 1.6°C and will drop to less than 1.5°C by the end of this century.

　　"Stabilizing the climate requires vigorous, rapid and continuous reduction of greenhouse gas emissions, and achieving net zero emissions of carbon dioxide. Reducing other greenhouse gas and air pollutant emissions, especially methane, is beneficial to health and climate." Zhai Panmao said.