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The IPCC Sixth Assessment Report highlighted the critical connections between climate actions and sustainable development, including both synergies and trade-offs. Managing the trade-offs through policy design is strongly recommended and the Sustainable Development Goals (SDGs) are proposed as a basis for evaluating climate actions in the context...

パリ協定の実施やネット・ゼロを目指す自治体や地域の増加を踏まえ、ライフスタイルの転換への注目が高まっている。カーボンフットプリント研究により日本においても製品やサービスの購入を通じた間接排出量がライフサイクルGHG 排出の半分以上を占めることが明らかとなっている。しかし、ライフスタイル及び消費パターンは多様であるため、一国における平均値や合計値だけではこの課題を捉えきれない。国内における消費者間の差に着目した分析が望まれるが、既存研究は世帯人数、収入、年齢に着目した分析が殆どである。本研究では、全国消費実態調査の匿名ミクロデータを用いて日本における約47,000サンプル世帯の一人当たりカーボンフットプリントを推計した。さらに、推計したカーボンフットプリントに関し...

This study develops a map to identify SDGs and their targets within long term global scenarios of climate mitigation. This map is fundamental to analyse the alignment of climate goals with the SDGs, and the interactions with SDGs in long term scenarios. A methodology is proposed to identify and categorize the coverage and treatment of SDGs and...

This study presents a multi-model analysis of long-term climate policy of Japan, whose mid-century strategy is subject to an ongoing policy debate, focusing on the carbon dioxide emissions in the energy sector. The models demonstrate multiple future pathways of the low-carbon energy system in Japan. The median of marginal abatement cost is found to...

Achieving long term climate mitigation targets for Japan requires deep transformations in the energy system, in particular in the power generation sector. Decarbonization of this sector is unclear due to the uncertain nuclear policy after the 2011 Great East Japan Earthquake. However, many other uncertainties need to be considered, namely the...

本稿では日本の2050年までの温室効果ガス，エネルギーシステムのシナリオを，複数のエネルギーモデルもしくは統合評価モデルを用いて定量化し，それらを相互比較することによって，不確実性を踏まえた長期の気候政策の評価を行う．

Kumamoto is a rare case of fully functional PES for over 13 years; Willingness between buyers and sellers is one of the basic conditions for establishing PES. However, willingness are always not sufficient condition for groundwater recharge, which are difficult to quantify and verify; Role of intermediary institutions such as local agriculture...

The achievement of long-term targets for climate mitigation in Japan faces several uncertainties with respect to the availability of power generation technologies. Starting with the difficult situation of nuclear power deployment after the 2011 events, the effect of technological constraints on the reduction of large amounts of greenhouse gases...

The integrated assessment model (IAM) provide key information to allow policymakers to understand the possible outcomes of alternative development and climate policy scenarios. However, the complexity and large size of information resulting from IAMs, prevents straightforward communication of key insights to policy makers, unless a “translation...

The feasibility of the commitment for climate mitigation encapsulated in the NDC of Japan may be hindered by the uncertain situation of nuclear power supply. We developed scenarios to assess Japan’s NDC under different nuclear power supply paths. A computable general equilibrium (CGE) model is applied to evaluate the impact on the energy mix, and...