IPCC Membership is open to all member countries of the United Nations Environmental Programme (UNEP) and World Meteorological Organization (WMO). More than 2,000 scientists from 154 countries typically participate in the IPCC process. Scientists are independently nominated for participation in the Panel by their own governments. The fields of Earth system science, meteorology, ecology, economics, engineering, the social sciences and many more are represented. A listing of the diverse team of contributors developing each Assessment Report is included in each report’s appendix.
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