Methane Emissions Offsetting With Temporary Carbon Sinks
メタン排出の一時的炭素吸収源によるオフセット (AI 翻訳)
Hans‐Peter Schmidt, Nikolas Hagemann
🤖 gxceed AI 要約
日本語
この論文は、メタンの温暖化効果を一時的な炭素貯留で相殺する時間明示的な手法を開発した。20年間のCO2除去により、メタン排出による100年間の温暖化影響を相殺できることを示し、EU炭素除去規制やパリ協定第6.4条における一時的炭素貯留の価値評価に貢献する。
English
This paper develops a time-explicit method for offsetting the warming impact of methane emissions with temporary carbon sinks. It shows that a 20-year CO2 removal can counterbalance the 100-year warming effect of a methane pulse, providing a physically grounded basis for valuing temporary carbon storage under EU and Paris Agreement frameworks.
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
日本では、農業や廃棄物からのメタン排出削減が課題であり、SSBJやカーボンクレジット制度における一時的炭素貯留の扱いに示唆を与える。本手法は、排出量取引やカーボンオフセットの算定基準として応用可能。
In the global GX context
The paper directly addresses the EU Carbon Removals and Carbon Farming Regulation and Article 6.4 of the Paris Agreement, providing a methodology for accounting temporary carbon storage. It is relevant to global carbon markets and national accounting frameworks under the UNFCCC.
👥 読者別の含意
🔬研究者:The time-explicit TCE method offers a new framework for accounting temporary carbon removal and its warming mitigation effect.
🏢実務担当者:Carbon project developers can use the method to quantify the offsetting value of temporary storage for methane emissions.
🏛政策担当者:The method supports regulatory design for carbon removals and offsetting mechanisms, particularly for biogenic methane.
📄 Abstract（原文）
ABSTRACT Methane accounts for more than 20% of current anthropogenic warming. While fossil methane emissions can likely be reduced substantially, biogenic methane from agriculture and waste will remain difficult to fully abate. Achieving climate neutrality therefore requires counterbalancing the warming effect of residual emissions. The rapid atmospheric decay of methane suggests that temporary carbon sinks can serve this purpose, yet current accounting approaches do not consistently quantify their time‐dependent cooling effect. Here we develop a time‐explicit method that enables offsetting the 100‐year warming impact of a methane emission pulse with an equally sized cooling effect delivered by carbon dioxide removal over 20 years. Based on a CO 2 atmospheric impulse–response function (IRF), we define the total climate effect (TCE) as time‐integrated warming and cooling of greenhouse gas emissions and dynamic carbon sinks expressed in CO 2 ‐equivalent units. The developed method yields the amount of CO 2 removal and storage duration over a chosen time horizon to counterbalance methane‐induced warming. For example, over a 20‐year horizon, complete offsetting of 1 t CH 4 of biogenic origin requires 94.6 t CO 2 e stored in a constant C‐sink. The method allows differentiation between temporary and geologically persistent carbon dioxide removal by explicitly accounting for storage duration and time horizon. By providing a physically grounded basis for valuing temporary carbon storage—a question actively debated in the EU Carbon Removals and Carbon Farming Regulation and Article 6.4 of the Paris Agreement—the approach supports near‐term climate mitigation and may bridge the decades required for scaling permanent CDR solutions by creating financial incentives for temporary carbon sink technologies.
🔗 Provenance — このレコードを発見したソース
- crossref https://doi.org/10.1111/gcbb.70143first seen 2026-06-16 05:36:18
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