Measuring What Matters: Why European Cities Need Bottom-Up Consumption-Based Greenhouse Gas Emission Inventories
重要なものを測る：なぜ欧州の都市はボトムアップ型の消費ベース温室効果ガス排出インベントリを必要とするのか (AI 翻訳)
Joana Bastos, Fabio Monforti-Ferrario
🤖 gxceed AI 要約
日本語
この論文は、EUの都市が気候変動対策を強化するために、消費ベースの温室効果ガス排出インベントリ、特にスコープ3排出量の算定が必要であると主張する。現在の都市レベルでの算定フレームワークはスコープ3を除外しているが、これが都市の排出量の大部分を占める。ボトムアップ型のプロセスベースLCA手法はデータ要求が高いとされるが、地域の行動に結びつく実用的なインベントリを提供できる。著者は、広く適用可能なボトムアップ手法と代表データの開発を提唱する。
English
This paper argues that European cities need consumption-based GHG emission inventories, especially Scope 3 emissions, which are currently excluded from city-level accounting. Bottom-up methods, though data-intensive, provide actionable insights tied to local physical flows and activities. The authors call for widely applicable bottom-up approaches and representative data to support effective local climate action.
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
本論文はEU都市のスコープ3排出量算定の課題を論じるが、日本でもSSBJや有報でのスコープ3開示要求が強まる中、地方自治体や企業のサプライチェーン排出量算定に重要な示唆を与える。特に、ボトムアップ手法の実用性とデータ整備の必要性は日本のGX実務にも直結する。
In the global GX context
While focusing on EU cities, this paper speaks directly to the global gap in consumption-based Scope 3 accounting at the subnational level. Its call for bottom-up methods aligns with ISSB and CSRD requirements for supply chain disclosure, offering a pathway for cities worldwide to develop actionable emission inventories.
👥 読者別の含意
🔬研究者:Highlights the methodological gap between top-down and bottom-up approaches for city-level Scope 3 accounting, urging development of practical bottom-up frameworks.
🏢実務担当者:Provides rationale for cities to adopt consumption-based inventories, emphasizing the need for actionable data to drive local climate policies.
🏛政策担当者:Argues for regulatory support and data infrastructure to enable bottom-up Scope 3 accounting at the city level, informing EU and global urban climate policy.
📄 Abstract（原文）
The EU has actively invested in climate change mitigation in recent decades, successfully reducing territorial greenhouse gas (GHG) emissions. However, consumption-based emissions have been largely overlooked. In particular, local climate action has excluded significant upstream emissions associated with urban activities occurring beyond municipal borders. Current city-level GHG accounting frameworks and practices in the EU typically exclude scope 3 emissions, but these often dominate cities’ GHG footprints. Cities need consumption-based GHG accounting frameworks to support ambitious and effective local climate action. Existing methods to increase the comprehensiveness of city-level GHG accounting include top-down input-output approaches and bottom-up process-based life-cycle approaches. Top-down methods have limited local actionability: they are unable to effectively inform and monitor local climate action because they lack the context-specific connection with physical flows and tangible urban activities that can be shaped by local action. On the other hand, bottom-up methods have been considered impractical due to their high data and modelling requirements. Cities need bottom-up methods and representative data that can be widely applicable to develop comprehensive and actionable consumption-based GHG emission inventories.
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.55845/jos-2026-22210first seen 2026-07-09 06:10:30
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gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。