表題番号:2021C-690 日付:2022/04/04
研究課題Perceived Feasibility of Japan’s Mitigation Scenarios: Expert Perspectives
研究者所属(当時) 資格 氏名
(代表者) 高等研究所 講師 居 乂義
(連携研究者) University of Tokyo Associate Professor Masahiro Sugiyama
(連携研究者) University of Shiga Prefecture Assistant Professor Hiroto Shiraki
研究成果概要

From June 2020 to March 2022, we have conducted a semi-structured interview survey to collect the perspective of over 110 experts on the feasibility and desirability of carbon neutrality in Japan. Through the survey, we explored the following research questions:

i) How do experts perceive the feasibility and desirability of decarbonization transition? Any differences among expert groups from different disciplines? What is the agreement level?

ii) What are the barriers to decarbonization transition in Japan? How do experts assess each of them? Which barriers present the greatest risk to the decarbonization transition?

The results show that experts think of feasibility as continuous, not binary. Collectively, the response suggests that achieving net-zero emissions by 2050 is more infeasible than feasible. The assessment also contributes to a better understanding of the most important barriers to decarbonization transition in Japan, as well as the multi-dimensional feasibility of carbon neutrality. Along with the interviews, we have presented our preliminary results in academic conferences (SEEPS 2021, IAMC 2021) and workshops (WIAS/RIEEM internal seminars) and collected comments to improve our work.