在温室气体之间建立权衡的替代方法
1Stanford University, Stanford, California 94305, USA.
Nature
|April 5, 2001
概括
本研究提出了一个新的框架来比较温室气体排放,考虑经济因素和气候目标. 报告显示,随着气候目标的接近,短寿命气体排放的成本会增加.
科学领域:
- 气候科学 气候科学
- 环境经济学环境经济学
- 大气化学 大气化学
背景情况:
- 京都议定书允许通过除二氧化碳 (CO2) 外的气体减少排放.
- 目前的方法使用全球变暖潜力 (GWPs) 来等同不同的温室气体.
- 电力系统计划有局限性,不包括经济因素,依赖于任意的时间范围.
研究的目的:
- 开发一种替代框架来确定放射性活性气体之间的排放等价性.
- 解决现有方法的缺陷,例如排除损害赔偿或减少成本.
- 建立一个更强大的方法来设定温室气体之间的权衡.
主要方法:
- 制定了一个重点关注限制温度变化和温度变化速度的框架.
- 计算了与拟议的气候上限相对应的每个气体排放的边际成本 (支付意愿).
- 纳入经济和物理考虑,以确定随时间推移的天然气权衡.
主要成果:
- 拟议的框架为定义排放等价值提供了全球变暖潜力的替代方案.
- 排放气体的相对价格对气体寿命,目标选择和目标距离敏感.
- 随着气候上限的接近,短寿命气体的排放变得更加昂贵.
结论:
- 新框架为管理温室气体排放提供了更全面的方法.
- 经济和物理因素对于准确评估天然气权衡至关重要.
- 关于气候目标的政策决策显著影响不同温室气体的相对成本.
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