地域における炭素中立社会へのシナリオ作り

抄録

Region-basis carbon reduction actions are keys for motivating the transition from a high carbon intensive society to a carbon neutral society in Japan. In order to encourage such actions while gaining wider involvement of stakeholders in each region, such as citizens, governments, businesses and NGOs, it is important to develop a common view of the goal—carbon neutral society—and share scenarios on how to reach it. Building a future scenario to reach the goal serves a common ground among stakeholders. Socioeconomic conditions, city designs, lifestyles, energy systems and other factors related to greenhouse gas emissions differ region by region. Future scenarios are not simply miniature versions of the nationwide scenario: a future scenario must be designed for each region. The “regional 2050 pathway calculator (regional 2050 navi)” is a Web- and Excel-based tool for designing future scenarios depicting the active engagement of stakeholders. The tool was developed based on the Asia-Pacific Integrated Assessment Models (AIMs), an integrated assessment model, used for designing the national climate change mitigation action plan in Japan. The tool allows all stakeholders to design future carbon reduction pathways by themselves.