This report presents data for countries covered under IPAC referred to collectively as OECD and OECD partner countries (which includes accession candidate countries, except Thailand), usually distinguishing explicitly between the two country groups. However, some indicators are not available for all countries and for all years covered. In such cases, the report either highlights these gaps in the text or provides estimates to ensure comprehensive aggregates are presented. IPAC estimates are preliminary, and work is under way on statistical methods to fill data gaps. For instance, data gaps for annual greenhouse gas emissions from OECD partner countries were estimated. Details on data availability and methodologies are provided in notes and the Annex.
The contents of the Monitor rely on a set of indicators developed with methodologies that have been declassified by members through the habitual OECD process and updated every year. To ensure that the monitoring effort is consistent and systematic, the structure of the Monitor, which is based on OECD Pressure‑State-Response environmental indicator model (OECD, 2023[1]), remains consistent with slight variations in specific indicators or their visualisations to highlight an issue or trend that has emerged.
The main differences from the 2023 edition of the Monitor are that, in this 2024 edition the country coverage of GHG emissions and targets is global rather than just the countries covered by IPAC. These are consistent with the IPCC and the United Nations Environment Programme (UNEP) estimates (UNEP, 2024[2]). There are also some changes in the presentation of climate related-hazards data, showcasing maps for different regions. There are some new visualisations for section 3 to emphasise changing trends, and only data for country groups are presented. Finally, details of the methodology to estimate aggregate GHG emissions is presented in the Annex with a table with details on GHG emissions and targets. This year’s results and new trends are reflected in the key messages of the Executive Summary.
Looking forward, IPAC will continue to construct extensive datasets for all covered countries and refine and develop indicators associated with this broader analytical perspective. In this way, it will help countries make informed decisions to address the climate emergency in the context of their country-tailored policy approaches, institutional landscapes, and economic and social realities.
