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Methane is a potent, short-lived climate pollutant responsible for nearly 0.5°C of global temperature rise. Though it remains in the atmosphere for about 12 years, its climate impact is 86 times stronger than carbon dioxide over 20 years, making methane mitigation one of the most effective strategies for tackling climate change. The waste sector...

　本報告書は、令和７年度環境省「途上国における優れた脱炭素･低炭素技術の普及展開に向けた制度構築等支援委託業務」の業務報告書である。 　本業務は、二国間クレジット制度（JCM）を活用した優れた脱炭素・低炭素技術の展開及びJCM プロジェクトを契機とした横展開や普及拡大を更に強化していくため、途上国の長期戦略の策定支援、NDC 更新・実施支援や、脱炭素都市の形成に向けた取り組み支援を行うとともに、それらの国・ 都市の市場の状況を踏まえ、途上国や都市における新たな制度・規制等の構築や既存制度の改善に着手することを目的として、以下の４課題を行った。 I．各国のNDC 更新並びに各国等の長期戦略策定等を見据えたAIM を活用したシナリオ分析及び脱炭素化に向けた戦略・制度構築支援 II...

This concluding piece of the Asia-Pacific Climate Security (APCS) report series will discuss the outlook for future climate security research and activities. The report series has presented essential summaries, including key messages and policy recommendations, of the project's three year research efforts. This project has sought to clarify whether...

This discussion paper analyzes the impacts of global warming on maritime security in the Asia-Pacific region, focusing on both geopolitical transformations and legal implications arising from climate-induced oceanic changes. It highlights how rising sea levels, intensifying marine disasters, and shifting ecosystems are reshaping security dynamics...

This discussion paper examines whether the securitisation of climate change can accelerate the transition to net-zero emissions in the Asia-Pacific region. It argues that framing climate change and energy transition as national security concerns can elevate policy urgency and mobilise resources to address systemic risks, including energy insecurity...

This discussion paper introduces the conceptual foundations and analytical framework of the Asia-Pacific Climate Security (APCS) briefing note series. It situates climate security within an evolving geopolitical context marked by intensifying climate impacts and growing challenges to multilateral cooperation. The paper examines how climate change...

This paper examines the complex relationship between climate change and food security in the Asia-Pacific region. It demonstrates how climate change disrupts food systems through impacts on crop yields, fisheries, and supply chains, while interacting with socio-economic inequalities, governance failures, and competing resource demands to produce...

This discussion paper explores the concept of climate-induced mobility in the Asia-Pacific region and its implications for security, governance, and policy development. It highlights the growing recognition of climate mobility in international and regional policy frameworks, while emphasizing the absence of a comprehensive global legal regime to...

APCSプロジェクトの過去3年間にわたる活動および成果を総括する場となった本シンポジウムでは、気候安全保障が抱える課題と機会について議論し、アジア太平洋地域の地政学的状況の変化の中で、気候安全保障が引き続き持つ意義について検討した。さらに、今後刊行予定の「APCS政策レポート」の紹介を通じて、本プロジェクトから得られた知見や洞察を、国内外の研究者、関連する政策立案者、および気候安全保障分野に関心を持つステークホルダーに広め、批判的に検討する場ともなった。

This symposium discussed the challenges and opportunities of climate security and examined its continued relevance under a shifting geopolitical landscape in the Asia-Pacific region. The event presented an opportunity to take stock of the activities and achievements of the Asia-Pacific Climate Security (APCS) project conducted by IGES over the past...