[Explanation] On August 18, the China Meteorological Administration held a media interview meeting for the first working group report of the sixth IPCC assessment report.
According to Chao Qingchen, deputy director of the National Climate Center, the 50 years since 1970 are the warmest 50 years since 2000.
[Concurrent] Chao Qingchen, Deputy Director of the National Climate Center
From 1901 to 2018, the global average sea level has risen by 0.20 meters, which is faster than any century in the past 3000 years. The global concentration of carbon dioxide in 2019 has reached 410 ppm, higher than any period 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. The increase in temperature here is about 1.07°C due to human activities.
[Explanation] Chao Qingchen said that as climate warming intensifies, the intensity of future extreme weather and climate events will become stronger, and the developed areas of eastern China will bear higher climate risks.
The central part from North China to South China, and the northwest are high-risk areas for high-temperature heat waves.
[Concurrent] Chao Qingchen, Deputy Director of the National Climate Center
The high temperature heat wave is actually a very important disaster for the entire Northeast to South China. In the eastern part of China, coupled with a series of various compound disasters including the heavy rains and typhoons just mentioned, our eastern region is the most populous in China. It is also the area where the total economic volume is the most concentrated, and it is also the area where our future climate risks are most significant.
In addition, for example, North China and Northwest, especially the eastern part of Northwest, are facing drought, including high temperature.
After these concurrency, it will have a very big impact on water resources.
[Explanation] Chao Qingchen pointed out that the warming of the climate system is expected to continue until the middle of this century.
In the next 20 years, the global temperature rise will reach or exceed 1.5°C, and achieving net zero carbon emissions as soon as possible will make it possible to achieve the temperature rise control goal.
[Concurrent] Chao Qingchen, Deputy Director of the National Climate Center
The future temperature rise is determined by the combination of historical cumulative emissions and future emissions (greenhouse gases). If man-made global warming is to be limited to a certain level, the cumulative carbon dioxide emissions must be limited, at least to achieve net zero carbon dioxide emissions. .
In the case of the (low emission) scenario, to achieve the 2°C temperature rise target, it is required to achieve net zero emissions around 2070; if the 1.5°C temperature rise target is to be achieved, net zero emissions need to be achieved around 2050, and afterwards Take strong negative emission measures.
Dong Zeyu reports from Beijing
Editor in charge: [Li Yuxin]