Contrasting suitability and ambition in regional carbon mitigation

Yu Liu (), Mingxi Du (), Qi Cui, Jintai Lin (), Yawen Liu, Qiuyu Liu, Dan Tong, Kuishuang Feng and Klaus Hubacek
Additional contact information
Yu Liu: Chinese Academy of Sciences
Mingxi Du: Xi’an Jiaotong University
Qi Cui: China University of Petroleum
Jintai Lin: Peking University
Yawen Liu: University of International Business and Economics
Qiuyu Liu: Xi’an Jiaotong University
Dan Tong: Tsinghua University
Kuishuang Feng: University of Maryland
Klaus Hubacek: University of Groningen

Nature Communications, 2022, vol. 13, issue 1, 1-9

Abstract: Abstract Substantially enhancing carbon mitigation ambition is a crucial step towards achieving the Paris climate goal. Yet this attempt is hampered by poor knowledge on the potential cost and benefit of emission mitigation for each emitter. Here we use a global economic model to assess the mitigation costs for 27 major emitting countries and regions, and further contrast the costs against the potential benefits of mitigation valued as avoided social cost of carbon and the mitigation ambition of each region. We find a strong negative spatial correlation between cost and benefit of mitigating each ton of carbon dioxide. Meanwhile, the relative suitability of carbon mitigation, defined as the ratio of normalized benefit to normalized cost, also shows a considerable geographical mismatch with the mitigation ambition of emitters indicated in their first submitted nationally determined contributions. Our work provides important information to improve concerted climate action and formulate more efficient carbon mitigation strategies.

Date: 2022
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DOI: 10.1038/s41467-022-31729-y

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