IPCC碳排放因子库
https://www.ipcc-nggip.iges.or.jp/EFDB/find_ef.php
欧盟碳排放因子库
https://www.eea.europa.eu/publications/emep-eea-guidebook-2019/emission-factors-database
美国环境保护署碳排放因子库
https://www.epa.gov/electronic-reporting-air-emissions/webfire
英国环境部碳排放因子库
https://www.gov.uk/government/collections/government-conversion-factors-for-company-reporting