RT null T1 Climate Change 1992: The Supplementary Report to the IPCC Impacts Assessment A1 World Meteorological Organization, A1 United Nations Environment Programme, K1 climate change K1 climate change adaptation K1 climate change mitigation K1 emission K1 emission control K1 emission factor K1 emission forecast K1 emission reduction K1 emission source K1 mitigation measure PB Intergovernmental Panel on Climate Change (IPCC) YR 2012 FD 2012 LK https://wedocs.unep.org/handle/20.500.11822/8754 UL https://wedocs.unep.org/handle/20.500.11822/8754 NO This report, prepared for international policymakers and experts, provides an authoritative update on the scientific understanding of climate change impacts since the 1990 assessment by the Intergovernmental Panel on Climate Change (IPCC) Working Group II. Drawing on recent research and global input, it addresses critical sectors including agriculture, forestry, hydrology, the cryosphere, natural terrestrial ecosystems, energy, human settlements, transport, industry, human health, air quality, and changes in ultraviolet-B radiation. The document outlines advances in systematic observation programs, highlights major uncertainties—especially regarding regional impact predictions—and introduces refined preliminary guidelines for assessing environmental and socio-economic consequences. The report reviews recent studies, emphasizing challenges for vulnerable regions, such as developing countries and small island states, and stresses the necessity for integrated, long-term monitoring, improved data systems, and adaptive strategies. DS UN Environment Document Repository RD Sep 18, 2026