环境科学
二氧化碳
森林砍伐(计算机科学)
提交
温室气体
减缓气候变化
碳捕获和储存(时间表)
自然资源经济学
全球变暖
碳纤维
气候变化
计算机科学
化学
生态学
经济
有机化学
算法
数据库
复合数
生物
程序设计语言
作者
William F. Lamb,Thomas Gasser,Giacomo Grassi,Matthew Gidden,Carter Powis,Oliver Geden,Gregory F. Nemet,Yoga Pratama,Keywan Riahi,Stephen M. Smith,Jan Steinhauser,Naomi E. Vaughan,Jan C. Minx
出处
期刊:Research Square - Research Square
日期:2023-08-14
被引量:1
标识
DOI:10.21203/rs.3.rs-3255532/v1
摘要
Abstract Rapid emissions reductions, including reductions in deforestation-based land emissions, are the dominant source of global mitigation potential in the coming decades 1 . But in addition, carbon dioxide removal (CDR) will have an important role to play. Here we benchmark proposed CDR in the Nationally Determined Contributions (NDCs) and the long-term mitigation strategies against levels in integrated assessment scenarios that meet the temperature goal of the Paris Agreement. Our analysis finds a “CDR gap”, i.e. levels proposed by countries fall short of those in virtually all scenarios that limit warming to 1.5°C - including in low energy demand scenarios with the most limited CDR scaling and aggressive near-term emissions reductions. Further, we observe that many countries propose to expand land-based removals, but none yet commit to significantly scaling novel methods such as bioenergy carbon capture and storage, biochar, or direct air carbon capture and storage.
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