Short-lived Climate Forcers: IPCC Experts Gather in Rome to Shape 2027 Methodology Report

By: Abudu Olalekan

Rome hums with activity these days. Gathering at the FAO building, specialists from over fifty nations – totaling above 130 – fill conference rooms this week. Their purpose ties to climate tracking, focused sharply on short-term pollutants. They’re deep in work for what will become the IPCC’s 2027 guide on measuring emissions inventories.

This time feels huge for the people behind the report – everyone senses that. The weight of it sits in the air around them. Each person moves with quiet awareness. What they’ve built matters more than just pages and data. A shared understanding hums beneath conversations. Even silence carries meaning now. Not because anyone says so – but because actions show it.

“This meeting is a key moment in the development of the SLCF Methodology Report,” said Takeshi Enoki, one of the Co-Chairs of the IPCC’s Task Force on National Greenhouse Gas Inventories (TFI). “Authors are coming together to consolidate the science and the methods we need for a solid Second Order Draft.”

Truth is, why go through all that effort? This document aims to help leaders and researchers by offering straightforward ways to measure pollutants such as nitrogen oxides and carbon monoxide – gases that vanish faster than CO₂ yet still affect local air and weather sharply. Though brief in lifespan, their effects hit hard.

Time moves forward, moment by moment.

Finishing up the second draft keeps authors busy right now. Come late August 2026, others will step in – eyes scanning pages till October closes it out. That stretch of time? Where things start clicking for a lot of people who take part.

“The Second Order Draft review is a crucial step in the IPCC process,” said Mazhar Hayat, the other TFI Co‑Chair. “It lets governments and experts weigh in, point out where the guidance isn’t clear enough, and help make sure it’s robust and actually usable before we lock it in.”

Back in Sofia, Bulgaria, the journey toward this document began during a weeklong meeting of the IPCC. That gathering, held between July 27 and August 2, 2024, gave the green light to the initial structure. Work will wrap up years later, with completion expected in 2027.

Not everyone sees it, but the TFI Bureau – with help from Co-Chairs across Working Groups – already picked the people steering the project: those leading author teams, contributing authors, and review editors. Full details on who’s involved are available if you look