CO2以外の温室効果ガスと気候変動
S A Montzka1, E J Dlugokencky, J H Butler
1National Oceanic and Atmospheric Administration, Boulder, Colorado 80305, USA. stephen.a.montzka@noaa.gov
Nature
|August 5, 2011
まとめ
二酸化炭素以外の温室効果ガスの排出量を削減することは,将来の気候変動を軽減するための迅速な戦略です. CO2を大幅に削減することは,長期的な気候目標を達成するために不可欠であるが,他のガスをターゲットにすることは,すぐに利益をもたらす.
科学分野:
- 気候科学 気候科学
- 環境科学 環境科学
背景:
- 地球の気候は,人間による温室効果ガスの排出によって温暖化しています.
- 化石燃料からの二酸化炭素 (CO2) は温暖化の主要な要因である.
- CO2以外の温室効果ガスも,気候変動に大きく貢献しています.
研究 の 目的:
- 気候変動における非CO2温室効果ガスの役割を強調する.
- 気候変動を緩和するための戦略を探求すること.
- 急速な気候変動の利益のために,非CO2排出量を削減する可能性を強調する.
主な方法:
- 人為的な温室効果ガス排出量の分析.
- 様々な温室効果ガスの気候への影響の評価.
- 排出削減戦略の評価.
主要な成果:
- メタンや酸化窒素を含む,CO2以外の温室効果ガスは,温暖化に大きく貢献している.
- CO2以外のいくつかのガスは,CO2よりも短い大気中の寿命を持っています.
- 寿命が短いこれらのガスの排出量を減らすことは,温暖化を緩和するためのより速い経路を提供します.
結論:
- 持続可能な気候変動の緩和には,CO2排出量の大幅な削減が必要である.
- CO2以外の温室効果ガスの排出量を削減することは,将来の気候変動を軽減するための補完的で迅速なアプローチを提供します.
- 非CO2の排出をターゲットにすることは,気候目標をより迅速に達成するための実行可能な戦略です.
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