地質学的なネットゼロと,炭素吸収場の分散会計の必要性
Myles R Allen1,2, David J Frame3, Pierre Friedlingstein4
1Atmospheric, Oceanic and Planetary Physics, Department of Physics, University of Oxford, Oxford, UK. myles.allen@physics.ox.ac.uk.
Nature
|November 18, 2024
まとめ
二酸化炭素 (CO2) の排出をゼロにするのは,地球温暖化を止めるために極めて重要です. 現在の計算方法には CO2 の被動的吸収が含まれているため,温暖化が継続され,気候変動の目標が損なわれる可能性があります.
科学分野:
- 気候科学
- 環境会計
- 地球システム科学
背景:
- 地球温暖化は二酸化炭素 (CO2) の排出によって引き起こされ, 純ゼロの目標が求められます.
- 現在の温室効果ガスの会計は,被動的なCO2吸収を含むことにより,純排出量を誤って表す可能性があります.
- この誤った説明は温暖化の継続につながり パリ協定の目標を危うくします
研究 の 目的:
- 純排出量計算における二酸化炭素の受動的吸収の問題に対処する.
- 化石燃料の残留使用が地球温暖化を引き起こさないようにする 措置を提案する
- 効果的な純ゼロ戦略の定義と実施を明確にする.
主な方法:
- 現在の温室効果ガスの会計システムとCO2吸収の処理の分析
- 土地管理のカテゴリーを排出量報告で分別するための提案された措置の議論
- 永久的なCO2除去のための"地質学的ネットゼロ"の概念の検討
主要な成果:
- 負の二酸化炭素の吸収を含めて,名目的な純ゼロ排出は,地球温暖化を止めることはできません.
- 土地の管理を細分化し,さらなる採掘を確保することが必要である.
- 永続的なCO2貯蔵を含む地質学的なネットゼロは,堅実な目標として提案されています.
結論:
- 排出量を正確に報告するには,被動的なCO2吸収と積極的な吸収を分離する必要があります.
- 地質学的なネットゼロの概念は,気候目標の科学的に健全な基盤を提供します.
- 気候変動の真の緩和と 炭素吸収源の保護には より明確な会計が不可欠です
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