Climate risk in shipping under the IMO Net Zero Framework: the role of optionality and uncertainty
IMOネットゼロ枠組下での海運における気候リスク：オプション性と不確実性の役割 (AI 翻訳)
Marie Fricaudet, Tristan Smith, Nishatabbas Rehmatulla
🤖 gxceed AI 要約
日本語
本論文は、IMOのネットゼロ枠組下での海運における気候転換リスクを評価する船舶レベルのフレームワークを開発。規制・技術・市場の不確実性を考慮した多数の将来シナリオを用いて、リスクがセグメント間で大きく異なることを示す。早期の代替燃料導入は必ずしもリスクを低減せず、投資延期とレトロフィットのオプション保持が重要である。規制の明確化が民間投資と気候目標の整合に不可欠と結論。
English
This paper develops a ship-level framework to assess climate transition risk under the IMO Net Zero Framework, considering regulatory, technological, and market uncertainty. Using a large ensemble of futures, it finds high and heterogeneous risk across vessel segments. Importantly, early commitment to alternative fuels may not reduce downside risk; instead, the ability to delay investment and preserve retrofit options is key. The study underscores the need for regulatory clarity.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本は世界有数の海運国であり、同国の船社はIMO規制への対応が急務。本フレームワークは不確実性下での投資判断を支援し、SSBJ開示やTCFD対応でも有用。日本企業が直面する移行リスク定量化の実践的ツールとして注目される。
In the global GX context
This paper addresses a critical gap in climate risk assessment for the shipping sector, which is often overlooked in global disclosure frameworks. It provides a practical, scenario-based tool that aligns with TCFD/ISSB guidance by quantifying transition risk under deep uncertainty. The findings on the value of flexibility have implications for transition finance and regulatory design worldwide.
👥 読者別の含意
🔬研究者:Offers a novel method for modeling transition risk in shipping with decision-making under uncertainty, applicable to other long-lived asset sectors.
🏢実務担当者:Provides a practical framework for shipping companies to evaluate climate risk and inform investment decisions under the IMO Net Zero Framework.
🏛政策担当者:Highlights the importance of regulatory clarity to reduce uncertainty and align private investment with climate goals; useful for IMO and national regulators.
📄 Abstract（原文）
Abstract Climate transition risk in shipping arises from the interaction between long-lived assets and deep uncertainty over future regulation, fuel prices, and technology costs. Existing assessments typically rely on a limited set of scenarios and do not capture the value of flexibility under uncertainty. Here we develop a ship-level framework to evaluate transition risk across a large ensemble of plausible futures reflecting regulatory, technological, and market uncertainty surrounding the International Maritime Organization’s proposed Net Zero Framework. Applying this approach to a sample of commercial vessels, we find that transition risk is substantial and highly heterogeneous within and across segments. Contrary to prevailing expectations, early commitment to alternative fuel technologies does not consistently reduce downside risk under current policy uncertainty. Instead, the ability to delay investment and preserve retrofit options emerges as a key determinant of resilience. Our results highlight the importance of regulatory clarity for aligning private investment with climate objectives and provide a practical tool for decision-making under uncertainty.
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.21203/rs.3.rs-9247082/v1first seen 2026-05-14 22:31:49
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