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Extraction and Characterization of Surfactants from Atmospheric Aerosols
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雲のプロセスを通して海洋上の大気汚染を浄化する海噴霧の役割
Daniel Rosenfeld1, Ronen Lahav, Alexander Khain
1Institute of Earth Sciences, the Hebrew University of Jerusalem, Jerusalem 91904, Israel.
Science (New York, N.Y.)
|August 17, 2002
まとめ
微粒子の大気汚染は陸上の雨を抑制するが,海洋の雨はあまり影響を受けない. 大きな海塩粒子は,汚染を集め,海洋に及ぼす気候影響を軽減することによって,空気を浄化するのに役立ちます.
科学分野:
- 大気科学 大気科学
- クラウド物理学 クラウド物理
- エアロゾール科学は,
背景:
- 粒子の大気汚染は,陸上のコンベクティブ雲の降雨を抑制することが知られている.
- 海洋上の雲の降水量に対する汚染の影響は,あまり理解されていない.
研究 の 目的:
- 陸上と海上におけるコンベクティブ雲の降水量に対する微粒子大気汚染の差異的な影響を調査する.
- 海洋雲の降水に対する汚染の影響を軽減する海塩の核の役割を理解するために.
主な方法:
- 海洋上の汚染された雲に関する新しい観測データの分析.
- 陸と海の上の雲の過程の比較.
- 雲の形成と降水における海塩核と汚染粒子の相互作用を調査する.
主要な成果:
- 汚染されたコンベクティブ雲による大洋上の降雨は,陸上での降雨よりも著しく抑制されることが少なくなります.
- 大きな海塩の核は,多数の小さな汚染粒子によって引き起こされる降雨抑制を無効にします.
- 海塩によって開始された雨滴は,汚染によって形成された雲の滴を効果的に集め,空気の浄化につながります.
結論:
- 海塩は,大洋の上の雲のプロセスを通して大気汚染の大気浄化に重要な役割を果たしています.
- 海洋に対する気候性エアロゾールの間接的な影響は,海塩の干渉により,以前に推定されたものより小さい可能性が高い.
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