Contrasting suitability and ambition in regional carbon mitigation

Yu Liu*, Mingxi Du*, Qi Cui, Jintai Lin*, Yawen Liu, Qiuyu Liu, Dan Tong, Kuishuang Feng, Klaus Hubacek

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

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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.

Original languageEnglish
Article number4077
Number of pages9
JournalNature Communications
Volume13
Issue number1
DOIs
Publication statusPublished - 14-Jul-2022

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