Lima, Peru, 27-30 October 2025 — A representative of the Scientific-Information Center of the Interstate Commission on Sustainable Development (SIC ICSD) is participating in the Sixty-third Session of the Intergovernmental Panel on Climate Change (IPCC).
The session, taking place at the ESAN Convention Center in Lima, brings together government representatives, international organizations, and members of the scientific community to adopt key decisions shaping the direction of the Seventh Assessment Report (AR7). Delegates are discussing the timelines for the preparation of the three Working Group contributions to AR7, as well as the draft outline and timeline for the Methodology Report on Carbon Dioxide Removal Technologies, Carbon Capture, Utilization and Storage (CDR and CCUS). The new Methodology Report aims to compile and synthesize existing scientific approaches, methods, and best practices for the measurement, reporting, and verification of CO₂ removal. Heated debates continue on whether to include marine CDR methods, such as ocean alkalinity enhancement, as these approaches currently lack long-term empirical data and raise concerns over potential ecological risks.
The IPCC is also working on the Special Report on Climate Change and Cities, the First Order Draft of which is now available for expert review. This report provides a comprehensive scientific assessment of the role of cities within the global climate system. It outlines key trends in urbanization, the growing climate-related risks and vulnerabilities of urban areas, and the potential of cities in mitigation and adaptation efforts. The report pays special attention to sustainable development, just transitions, gender equality, and community engagement, emphasizing the integration of climate actions into urban planning, the use of innovative solutions in governance, finance, and technology, and the strengthening of cooperation between cities, regions, and countries. Its ultimate goal is to promote resilient, inclusive, and climate-neutral cities capable of effectively responding to 21st-century challenges.
Among the main agenda items of the 63rd Session of the IPCC are decisions on the structure and work plan for the Seventh Assessment Report (AR7), as well as the discussion of financial and organizational measures aimed at enhancing the participation of developing countries and economies in transition in IPCC activities. Delegates are also reviewing proposals for the organization of expert meetings and workshops focused on regional climate information and the development of a Regional Data Atlas.
63rd Session of IPCC. Photocredit to IPCC (Anastasia Rodopoulou)
The three IPCC Working Groups remain central to the discussions, as their work forms the foundation of the Panel’s scientific assessment process. Working Group I addresses the physical science basis of climate change, including observations of temperature, precipitation, and extreme weather events. Working Group II focuses on impacts, adaptation, and vulnerability, with particular emphasis on loss and damage. Working Group III concentrates on mitigation pathways, emission reduction strategies, and the acceleration of the transition to low-carbon development. These focus areas serve as critical milestones that ensure the scientific rigor and coherence of the IPCC’s work while supporting the international community in designing effective climate policies.
Special attention is given to aligning the timeline of AR7 with major international policy cycles, including the upcoming Global Stocktake (GST) under the UNFCCC in 2028. The timely completion of AR7 will ensure that the IPCC’s scientific findings inform global climate decision-making processes.
The session is scheduled to conclude on 30 October 2025, following consideration of proposals regarding the venue and dates for the forthcoming Sixty-fourth Session of the IPCC.
The event supports the achievement of:
| Priority Area of REP4SD No 4 dedicated to SDG 13: “Take urgent action to combat climate change and its impacts” |
| 4.3 Assessment of climate risks and vulnerabilites through the application of corresponding models of a climate change impact on water resources, terrestrial ecosystems and natural disasters, tackling the development of state policies and strategies in this area. |