Global methane action pays for itself at least six times over

• 成果类型: Article
• 署名作者: Stoerk, Thomas; Rising, James; Shindell, Drew; Dietz, Simon
• 署名单位: European Central Bank; National Bank of Belgium; University of London; London School Economics & Political Science; University of Delaware; Duke University
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-8075; 1095-9203
• DOI: 10.1126/science.adu7392
• 发表日期: 2025-10-30
• 页码: eadu7392
• 关键词: LIVED CLIMATE POLLUTANTS; social cost; tipping points; thermohaline circulation; sensitivity-analysis; temperature; MODEL; mitigation; IMPACT; RISK

摘要

We provide a comprehensive assessment of the economic benefits and costs of global methane emissions abatement, anchored on the Global Methane Pledge. We use an integrated assessment model to estimate avoided climate damages at the global and country levels, including quantification of tipping points and risk. We further estimate air-quality cobenefits and methane abatement costs. We find that global methane action would be highly beneficial, yielding a benefit-cost ratio of at least six. It would provide larger benefits in lower-income countries, and it would reduce tipping point intensity and risk. We provide estimates of the social cost of methane to compare with previous literature and show that these estimates imply that key economies, such as the United States, European Union, and China, should be self-interested to abate methane emissions substantially.