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This document outlines the methodology used by the Climate Policy Initiative (CPI) to estimate bottom-up climate finance needs by collecting and standardizing data from Nationally Determined Contributions (NDCs). It distinguishes bottom-up needs—finance required by countries to reach national targets—from top-down needs, which are derived from predictive models to align with a 1.5°C pathway.

This report by the Climate Policy Initiative (CPI) outlines the methodology used to estimate 'bottom-up' climate finance needs, which are the financial requirements stated by countries in their Nationally Determined Contributions (NDCs) to reach national climate targets.