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4)IPCC: Global warming of 1.5℃. An IPCC Special Report on the impacts of global warming of 1.5℃above pre-industrial levels and related global greenhouse gas emission pathways, in the context of strengthening the global response to the threat of climate change, sustainable development, and efforts to eradicate poverty. p 616, Cambridge University Press, Cambridge and New York, 2018
5)IPCC: Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change. summary for policymarkers. pp 13, 22 https://www.ipcc.ch/report/ar6/wg1/downloads/report/IPCC_AR6_WGI_SPM.pdf(2022年11月21日閲覧)
6)UNEP: Emissions Gap Report 2021. https://www.unep.org/resources/emissions-gap-report-2021(2022年11月21日閲覧)
7)IEA: World Energy Outlook 2021, Technical note on the emissions and temperature implications of COP26 pledges. https://iea.blob.core.windows.net/assets/aa17bd09-2ad0-4d0a-b5aa-ee418900c4af/Theimpactsofnewemissionspledgesonlongtermtemperatures.pdf(2022年11月21日閲覧)