全球甲行动至少有六倍的回报
Thomas Stoerk1,2, James Rising3, Drew Shindell4
1Economics and Research Department, National Bank of Belgium, Brussels, Belgium.
Science (New York, N.Y.)
|October 30, 2025
概括
全球减少甲排放带来了巨大的经济效益,效益与成本的比率至少为6. 对甲采取行动降低了气候风险,
科学领域:
- 环境经济学
- 气候科学
- 公共卫生
背景情况:
- 甲是一种强有力的温室气体,
- 全球甲承诺旨在减少甲排放.
- 气候变化和减缓战略的经济影响需要全面评估.
研究的目的:
- 评估全球减少甲排放的经济效益和成本.
- 量化气候损害,临界点风险和空气质量副效益.
- 估计甲的社会成本,并为国家减排战略提供信息.
主要方法:
- 使用一个综合评估模型.
- 估计全球和国家层面的气候损害.
- 量化转折点的强度和风险,以及空气质量的附带效益和减排成本.
主要成果:
- 全球甲排放的效益与成本比率至少为6.
- 在低收入国家, 利更大,
- 关键经济体 (美国,欧盟,中国) 对大幅度减排有强烈的利益.
结论:
- 减少甲排放在经济上是非常有利的,而且在战略上也很重要.
- 减轻风险的努力为气候和空气质量带来了显著的优势.
- 国家经济利益与大幅度减少甲排放的战略一致.
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