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April 22 is the 52ndWorld Earth Day. Department of Earth System Science (DESS) of Tsinghua University held a special lecture on the cloud, inviting Professor GUAN Dabo to make a report on"New Opportunities and Challenges for Global Climate Change Emissions Reduction in the Post-Epidemic Era"to help promote the concept of "cherish the earth, harmonious coexistence between man and nature", and enhance the environmental protection and green and low-carbon awareness of teachers and students. The report was hosted by Professor LUO Yong, Director of DESS, and more than 150 teachers and students from departments of Tsinghua and fraternal universities participated.

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Screenshot of the video call meeting

On behalf of DESS, LUO Yong expressed his warm welcome and gratitude to the teachers and students who participated in this special lecture. He introduced the development history and basic situation of DESS, and supplemented the related background of "World Earth Day". Later, he took "how covid-19 affects future trend" as the starting point, and hoped that everyone would seize this rare opportunity to learn more and think more.

Subsequently, GUAN Dabo made a report entitled "New Opportunities and Challenges for Global Climate Change Emissions Reduction in the Post-Epidemic Era". He mentioned that data is very important for climate change research, but China does not have enough voice in the field of carbon emission databases. Therefore, his research team has been engaged in the research of carbon accounting list for a long time and established the Carbon Emission Accounts and Datasets (CEADS), breaking the situation of foreign monopoly. On this basis, GUAN Dabo combined the spread and prevention strength of covid-19 and pointed out that key industrial chains are severely affected by the epidemic. Vigorous measures taken in time to prevent and control the epidemic can minimize the impact. But at the same time, carbon emissions during the epidemic have been significantly lower than in 2019. There are greater uncertainties regarding carbon emissions in the post-epidemic era. The epidemic may provide an opportunity for global structural emission reductions, but it may also be the beginning of retaliatory growth. GUAN Dabo pointed out that, in the future, we need to pay special attention to the least developed small groups of countries, which may become new emission “giants”. At the end of the report, he emphasized that “consensus and integrity” are the cornerstones of global climate change negotiations, and the concept of “a Community of Shared Future for Mankind” should be fully established to jointly tackle climate change.

During the discussion session, GUAN Dabo systematically answered questions such as "the impact of the epidemic on global economy", "whether the epidemic will become a turning point in restrain global warming", and "how to effectively retard climate change in the post-epidemic era". Many teachers and students from brother colleges participated in the exchange and discussion, and the atmosphere was very warm.

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Screenshot of the material during GUAN Dabo’s sharing

This lecture focused on hot topics such as climate change and epidemic prevention, helping students better understand the frontiers and research methods of earth system science, and strengthened the awareness of protecting the earth, living green and low-carbon, and building a Community of Shared Future for Mankind.

Text: JIANG Ruijie

Image: SUN Danyi, JIANG Ruijie

Review: WU Haiping, LU Hui, research team of Department of Earth System Science

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