全世界の水素経済の大気汚染と気候変動への影響
Martin G Schultz1, Thomas Diehl, Guy P Brasseur
1Max-Planck-Institut für Meteorologie, Bundesstrasse 55, 20146 Hamburg, Germany. martin.schultz@dkrz.de
Science (New York, N.Y.)
|October 25, 2003
まとめ
水素燃料電池への移行は,すべての地表交通のために,窒素酸化物 (NOx) と一酸化炭素の排出量を50%削減することができます. この移行は,特に北半球では,よりきれいな空気を約束し,気候の混乱を最小限に抑えることを約束します.
科学分野:
- 大気化学と空気の質
- 気候科学 気候科学
- 持続可能な輸送技術
背景:
- 現在の地表交通は化石燃料に大きく依存しており,大気汚染に大きく貢献しています.
- 窒素酸化物 (NOx) と一酸化炭素は,大気質と健康に有害な影響を及ぼす主要なオゾン前駆物質です.
- 水素燃料電池技術は,よりクリーンな輸送のための潜在的な代替案を提供します.
研究 の 目的:
- 完全に水素で動いている地上交通車隊が空気の質に与える影響を評価する.
- オゾン前駆物質とメタンを含む大気化学への影響を評価する.
- 水素生産方法に基づく気候強制への影響を分析する.
主な方法:
- モデルシミュレーションを使用して,仮説的なシナリオの下で大気の変化を予測しました.
- 窒素酸化物 (NOx) と一酸化炭素の排出量の削減を定量化することに焦点を当てています.
- これらの排出変化が,地球規模のヒドロキシル基 (OH) とメタンの寿命に及ぼす影響を調査した.
主要な成果:
- 窒素酸化物 (NOx) と一酸化炭素の排出量を50%削減することが可能である.
- 北半球では,空気の質が著しく改善されると予測されています.
- モデルのシミュレーションでは,NOxが減少したため,グローバルOHの減少とメタンの寿命の延長が示されています.
結論:
- 地上交通における水素燃料電池の広範な採用は,空気の質を大幅に改善することができます.
- 純気象強制効果は,使用される水素発電技術に依存しています.
- 大気中の水素濃度の上昇は,大きな気候の混乱を引き起こす可能性は低い.
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