www.ipcc.ch/site/assets/uploads/2018/02/WG1AR5_SPM_FINAL.pdf

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気候変動2013: 物理科学の基礎に関する政策立案者向け要約

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This document is the Summary for Policymakers from the Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report, focusing on the physical science basis of climate change. It states that the warming of the climate system is unequivocal, with many observed changes unprecedented over decades to millennia since the 1950s. The atmosphere and oceans have warmed, snow and ice amounts have diminished, sea levels have risen, and greenhouse gas concentrations have increased. The document employs specific terms to describe the quality of evidence and the degree of agreement, as well as assessing the likelihood of various outcomes related to climate change.