A country-level assessment of the deployment potential of greenhouse gas removal technologies. (1st December 2022)

• Record Type: Journal Article
• Authors: Asibor, Jude O.; Clough, Peter T.; Nabavi, Seyed Ali; Manovic, Vasilije
• Is Part Of: Journal of environmental management. Volume 323(2022)
• Publication Date: 2022-12-01
• Subjects: Greenhouse gas removal -- GGR -- BECCS -- DACCS -- Climate change mitigation; Environmental policy -- Periodicals; Environmental management -- Periodicals; Environment -- Periodicals; Ecology -- Periodicals; 363.705
• DOI: 10.1016/j.jenvman.2022.116211
• Languages: English
• ISSNs: 0301-4797

Abstract

Abstract: 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). Highlights: The GGR potential of 182 countries was evaluated. The cheaper natural GGR methods are sufficient options for developing nations. OECD nations are expected to drive the deployment of engineered GGR options. There is need for regional cooperation and resource sharing among countries.