RT Report T1 Adaptation Finance Gap Update 2023 A1 United Nations Environment Programme, K1 climate change K1 climate change adaptation K1 environmental financing K1 finance SN 978-92-807-4092-9 YR 2023 FD 2023-11 LK https://wedocs.unep.org/handle/20.500.11822/43832 UL https://wedocs.unep.org/handle/20.500.11822/43832 NO UNEP’s Adaptation Gap Report 2023 has undertaken a comprehensive assessment of the literature and commissioned new studies to provide updated estimates of the cost of adaptation and current adaptation finance flows, and thus the adaptation finance gap for developing countries (the non-Annex I countries defined under the United Nations Framework Convention on Climate Change [UNFCCC]). This background document, the Adaptation Finance Gap Update 2023, provides a more detailed write-up of this analysis. NO https://www.unep.org/resources/adaptation-gap-report-2023 DS UN Environment Document Repository RD Sep 17, 2026