Tyngsta klimatrapporten på ett decennium väntas

The Intergovernmental Panel on Climate Change (IPCC) is an intergovernmental body of the United Nations charged with advancing scientific knowledge about anthropogenic climate change. It was established in 1988 by the World Meteorological Organization (WMO) and the United Nations Environment Programme (UNEP) and endorsed by the UN later that year. It has a secretariat in Geneva, Switzerland, hosted by the WMO, and is governed by 195 member states.The IPCC informs governments about the state of knowledge on climate change, including possible response options and the natural, economic, and social impacts and risks. It does not conduct original research but undertakes periodic and systematic reviews of all relevant scientific publications by enlisting thousands of volunteer scientists and experts; observers have described this work as the biggest peer review process in the scientific community. Key findings are compiled into periodic "Assessment Reports" for policymakers and the general public.The IPCC is governed by its member state, which elect a bureau of scientists to serve through an "assessment cycle" of six to seven years. The bureau selects experts to prepare IPCC reports, drawing from nominations by governments and observer organisations. The IPCC carries out its activities through three working groups and a task force.The IPCC is an internationally accepted authority on climate change. Its findings are endorsed by leading climate scientists and all member governments, while its reports are regularly cited by media, governments, civil society organisations and businesses. IPCC reports play a key role in the annual climate negotiations held by the United Nations Framework Convention on Climate Change (UNFCCC); the Fifth Assessment Report influenced the landmark Paris Agreement in 2015. The IPCC shared the 2007 Nobel Peace Prize with Al Gore for contributions to the understanding of climate change.In 2015, the IPCC began its sixth assessment cycle, to be completed in 2023. In August 2021, the IPCC published its Working Group I contribution to the Sixth Assessment Report (IPCC AR6) on the physical science basis of climate change. The Guardian described this report as the "starkest warning yet" of "major inevitable and irreversible climate changes". Many newspapers around the world echoed this theme.