Over 130 experts from more than 50 countries are meeting at the headquarters of the Food and Agriculture Organization (FAO) in Rome, Italy, for the third Lead Author Meeting of the 2027 Methodology Report on Inventories for Short-lived Climate Forcers (SLCF) of the Intergovernmental Panel on Climate Change (IPCC).
“This meeting is a key moment in the development of the SLCF Methodology Report, as authors work together to consolidate the science and methodological approaches needed for a robust Second Order Draft,” said Takeshi Enoki, one the Co-Chairs of the IPCC’s Task Force on National Greenhouse Gas Inventories (TFI) responsible for preparing the report.
The SLCF Methodology Report aims to provide clear guidance on estimating emissions of key short-lived climate-forcing substances, including nitrogen oxides, carbon monoxide, and others, which significantly contribute to global and regional air quality and climate change.
The author teams will be finalising the second order draft of the report. The draft will be open for review from August 31 to October 25, 2026.
“The Second Order Draft review is a crucial step in the IPCC process, allowing governments and experts to provide feedback that strengthens the clarity, robustness and usability of the guidance before it is finalised,” said Mazhar Hayat, the other TFI Co‑Chair.
The IPCC agreed upon the outline of the 2027 IPCC Methodology Report on Inventories for Short-lived Climate Forcers at its 61st Session held in in Sofia, Bulgaria from July 27 to August 2, 2024. It will be finalised in 2027.
The TFI Bureau, also known as the Task Force Bureau, in consultation with relevant Working Groups’ Co-Chairs, selected the report’s Coordinating Lead Authors, Lead Authors and Review Editors. The full list of authors and review editors is here.