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The document outlines the methodological frameworks used to quantify climate finance needs for agrifood systems. It establishes a comprehensive taxonomy developed by CPI and FAO covering sectors such as crop and livestock systems, forestry, fisheries, and food diets. The 'top-down' approach aggregates data from 46 publications, using seven key reports to estimate needs for 2024-2030, while the 'bottom-up' approach extrapolates data from 167 Nationally Determined Contributions (NDCs). The analysis highlights significant data gaps for the post-2030 period and notes that agrifood system finance needs in low-income countries represent a larger relative proportion of their economy, averaging 2.7% of GDP.