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Fifth National Climate Assessment - Read the Report

IPCC. Climate Change 2013: The Physical Science Basis

The Working Group I contribution to the IPCC's Fifth Assessment Report (WGI AR5) provides a comprehensive assessment of the physical science basis of climate change. In addition to the full report, a technical summary and a summary for policymakers are included (a volume including only the summary for policymakers, technical summary, and FAQs is available separately).