Negative emissions to mitigate Earth system risks
地球システムリスクを軽減するためのネガティブエミッション (AI 翻訳)
Thomas Gasser, Armon Rezai, Côme Cheritel, Artem Baklanov, Michael Obersteiner
🤖 gxceed AI 要約
日本語
本論文は、地球システムの不確実性を事前に考慮した気候戦略を導出し、従来の事後的なアプローチと比較。ネットゼロCO2排出を10年早く達成する必要があり、炭素価格は最大2倍になる可能性がある。また、長期的な地球システムリスクを軽減するために、数世紀にわたるネットネガティブ排出が必要と結論付ける。
English
This paper derives climate strategies using an ex-ante approach incorporating Earth system uncertainty. It finds net-zero CO2 must be reached a decade earlier, carbon prices may double, and sustained net-negative emissions are needed to mitigate long-term Earth system risks, challenging traditional target overshoot scenarios.
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2050年カーボンニュートラル目標が掲げられているが、本論文はその達成スケジュールや炭素価格設定に不確実性を考慮する重要性を示す。特に、ネットネガティブ排出の必要性は、日本のCCUSや森林吸収源の活用戦略に示唆を与える。
In the global GX context
This paper highlights the need for ex-ante uncertainty consideration in climate policy. For global audiences, it underscores that current carbon pricing and net-zero targets may be insufficient without planning for sustained negative emissions, which has implications for IPCC scenarios and national decarbonization pathways.
👥 読者別の含意
🔬研究者:This paper introduces an ex-ante framework for incorporating Earth system uncertainty into integrated assessment models, offering a methodological advance for climate policy analysis.
🏢実務担当者:Corporate sustainability teams should note that carbon prices may need to double and net-zero targets shift earlier, impacting transition risk assessments and scenario planning.
🏛政策担当者:Policymakers should consider ex-ante uncertainty when setting carbon prices and net-zero deadlines, and plan for sustained negative emissions beyond net-zero.
📄 Abstract（原文）
Most climate policies are designed under a deterministic Earth system and their climate implications evaluated ex-post. Approaches that incorporate uncertainty ex-ante to anticipate Earth system risks remain underexplored. Here, we derive global climate strategies with an ex-ante approach, employing an integrated assessment framework that embeds estimates of physical uncertainty obtained through Bayesian fusion of Earth system models’ and observations’ data. These ex-ante strategies mitigate risks in the Earth system through precautionary measures unseen with the ex-post approach, in cost-benefit analysis and cost-effective implementations of various Earth system targets. Net-zero CO2 emissions must typically be reached a decade earlier, which can require up to a doubling of the near-term carbon price. Importantly, sustained and possibly century-long net-negative emissions must be planned for, albeit not to overshoot targets as in traditional scenarios but to mitigate long-term Earth system risks. This heightens the challenge faced by humanity to build a safe future within Earth system boundaries.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1038/s41467-026-69896-xfirst seen 2026-06-29 09:02:10
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