1. Biennial Update Report submissions from Non-Annex I Parties
https://unfccc.int/BURs
2. Trends in Global CO2 and Total Greenhouse Gas Emissions: 2020 Report;Olivier,2020
3. Global Energy Review 2021 CO2 Emissions
https://www.iea.org/reports/global-energy-review-2021/co2-emissions
4. Feasibility Study under NEDO Program on Ammonia Co-Firing in Thermal Power Generation Facility
https://www.jera.co.jp/english/information/20200327_479