OECD Green Growth and Sustainable Development Forum 2025

Session 3: Overcoming measurement and data challenges to improve estimations of GHG emissions and removals in agriculture and other land-use sectors

Jul 3, 2025 | 9:30 AM - 11:00 AM

Auditorium

Description

Transparent and internationally agreed methods to measure greenhouse gas emissions and removals are essential for effective climate policymaking. However, monitoring, reporting, and verification (MRV) of GHG emissions and removals from the AFOLU sector, for example through afforestation and de-forestation, conversion and other land-use change processes, presents numerous challenges. Sound MRV requires assessing an array of interacting processes, both natural and anthropogenic, which can be widely dispersed in space and highly variable in time. Uncertainties over the impacts of future climate change (including potential feedback effects from climate system tipping points) complicates the assessment of forest GHG removals. Interactions between agricultural inputs (e.g. fertilisers) and byproducts with soils and the atmosphere also create measurement challenges. In other cases, multiple methods exist and can give different results, creating confusion. This session will discuss key challenges and possible solutions to improve GHG estimations in the AFOLU sector. What is the role of satellite imagery to map the implications of land-use change? How to evaluate the impacts of wildfires and other extreme weather event on AFOLU GHG emissions and stocks? How to create greater alignment around which methods are most appropriate in which contexts? The session will also discuss best practices for aligning approaches and facilitating knowledge exchange across countries, including filling knowledge gaps in developing countries.

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