Climate Science Standards and Carbon Removal — ESG BROADCAST shares key takeaways.
The Intergovernmental Panel on Climate Change (IPCC) has officially commenced work on its 2027 Methodology Report on Carbon Dioxide Removal Technologies and Carbon Capture, Utilization and Storage (CDRT-CCUS), marking a critical step in strengthening global climate accounting frameworks. The first Lead Author Meeting (LAM1) is being held from 14–16 April 2026 in Rome, bringing together over 150 experts to begin drafting the report under the IPCC Task Force on National Greenhouse Gas Inventories.
This methodology report aims to provide governments with updated scientific tools and standardized approaches for estimating carbon dioxide emissions and removals associated with emerging and established carbon removal technologies. As countries intensify their climate commitments under the Paris Agreement, the need for consistent and transparent accounting of carbon removal has become increasingly critical. The IPCC’s work will address this gap by refining methodologies used in national greenhouse gas inventories.
The scope of the report covers a wide spectrum of carbon dioxide removal (CDR) and CCUS approaches. These include technologies such as direct air capture, carbon capture and storage, and utilization pathways, as well as nature-based and hybrid solutions like soil carbon sequestration, biomass-based removal, and coastal ecosystem interventions. The report will also explore emerging approaches such as the production of durable CO₂-derived materials, reflecting the evolving landscape of carbon management technologies.
The IPCC Task Force on National Greenhouse Gas Inventories, which leads this effort, plays a central role in developing internationally agreed methodologies for reporting emissions and removals. These methodologies are widely used by countries under the United Nations Framework Convention on Climate Change (UNFCCC) and the Paris Agreement, ensuring comparability and credibility of climate data across jurisdictions.
The development of the methodology report will follow the IPCC’s structured and transparent process. It will include multiple Lead Author Meetings, iterative drafting, and two formal review stages—first by experts and then jointly by governments and experts. Final approval is expected in 2027 by IPCC member governments, ensuring both scientific rigor and policy relevance.
This initiative builds on decisions taken during recent IPCC plenary sessions, where member governments agreed on the scope and content of the report as part of the Seventh Assessment Cycle. The methodology report complements other upcoming IPCC outputs, including working group contributions and special reports, all of which aim to inform global climate policy and the next phase of international climate negotiations.
The timing of this report is particularly significant as countries prepare for enhanced climate targets and reporting obligations. With carbon dioxide removal expected to play a growing role in achieving net-zero goals, standardized methodologies will be essential to ensure environmental integrity and avoid inconsistencies in reporting.
Strategic significance lies in establishing globally harmonized methodologies for carbon dioxide removal and CCUS accounting. The IPCC’s work will directly influence how countries measure and report climate progress, shaping carbon markets, ESG disclosures, and regulatory frameworks. For businesses and policymakers, this signals a shift toward more stringent, science-based validation of carbon removal claims, increasing the importance of transparency, verification, and alignment with internationally recognized standards.
Image Credit: Carbon Brief
