Asibor Jude O, Clough Peter T, Nabavi Seyed Ali, Manovic Vasilije
School of Water, Energy and Environment, Cranfield University, Bedfordshire, MK43 0AL, UK.
School of Water, Energy and Environment, Cranfield University, Bedfordshire, MK43 0AL, UK.
J Environ Manage. 2022 Dec 1;323:116211. doi: 10.1016/j.jenvman.2022.116211. Epub 2022 Sep 13.
The deployment of greenhouse gas removal (GGR) technologies has been identified as an indispensable option in limiting global warming to 1.5 °C by the end of the century. Despite this, many countries are yet to include and promote this option in their long-term plans owing to factors such as uncertainty in technical potential, deployment feasibility and economic impact. This work presents a country-level assessment of the deployment potential of five GGR technologies, including forestation, enhanced weathering (EW), direct air carbon capture and storage (DACCS), bioenergy with carbon capture and storage (BECCS) and biochar. Using a multi criteria decision analysis (MCDA) approach consisting of bio-geophysical and techno-economic factors, priority regions for the deployment of these GGR technologies were identified. The extent of carbon dioxide removable by 2100 via these technologies was also estimated for each of the 182 countries considered. While the obtained results indicate the need for regional cooperation among countries, it also provides useful evidence on the need for countries to include and prioritise GGR technologies in their revised nationally determined contributions (NDCs).
温室气体去除（GGR）技术的部署已被视为到本世纪末将全球变暖限制在1.5摄氏度的不可或缺的选择。尽管如此，由于技术潜力、部署可行性和经济影响等因素存在不确定性，许多国家尚未在其长期计划中纳入并推广这一选择。这项工作对包括造林、强化风化（EW）、直接空气碳捕获与封存（DACCS）、生物能源与碳捕获与封存（BECCS）和生物炭在内的五种GGR技术的部署潜力进行了国家级评估。采用由生物地球物理和技术经济因素组成的多标准决策分析（MCDA）方法，确定了这些GGR技术的优先部署区域。还对所考虑的182个国家中的每一个国家估计了到2100年通过这些技术可去除的二氧化碳量。虽然所得结果表明各国需要开展区域合作，但它也为各国在修订的国家自主贡献（NDC）中纳入GGR技术并确定其优先顺序提供了有用的证据。
