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煙の活性化と,アマゾン上空の雲の抑制を比較した結果です
Ilan Koren1, J Vanderlei Martins, Lorraine A Remer
1Department of Environmental Sciences, Weizmann Institute, Rehovot 76100, Israel.
まとめ
人為的なエアロゾールは雲に大きく影響し,気候変動に影響を与えます. この研究は,アマゾンのエアロゾールと雲の相互作用が,放射力強迫と大気中のエネルギー分布をどのように変化させるかを明らかにしています.
科学分野:
- 大気科学 大気科学
- 気候科学 気候科学
- クラウド物理学 クラウド物理
背景:
- 人為的なエアロゾールは,人間が引き起こした気候変動の重要な,十分に理解されていない要因です.
- エアロゾールによる雲の覆いや高度の変化は,地球のエネルギーバランスを大幅に変化させ,潜在的に冷却または温暖化効果をもたらす可能性があります.
- エアロゾールによって引き起こされる気候変動の規模は,温室効果ガスの規模に匹敵します.
研究 の 目的:
- アマゾン地域における人為的なエアロゾールと雲の性質の複雑な相互作用を調査する.
- エアロゾールが雲に及ぼす微物理的効果と放射的効果の間の移行を明らかにする.
- エアロゾール-クラウドのフィードバックが,エアロゾール強制力と大気中の放射能をどのように変化させるかを分析する.
主な方法:
- エアロゾルの光学特性と雲の分数のデータの分析.
- エアロゾールと雲の相互作用とその放射的影響のモデリング.
- アマゾンの盆地に焦点を当てて,特定のエアロゾール-雲の移行ダイナミクスを研究します.
主要な成果:
- 雲に対するエアロゾールの対極的な微物理的および放射的効果の間のスムーズな移行が観察されました.
- エアロゾールの光学特性と雲分子の間のフィードバックメカニズムが特定されました.
- このフィードバックは,エアロゾール強制を修正し,総放射能と大気中の分布を変化させることが示されました.
結論:
- アマゾンのエアロゾールと雲の相互作用は,複雑な移行を示し,気候強制に影響を及ぼします.
- エアロゾールと雲の間のフィードバックループは,放射能を調節する上で重要な役割を果たします.
- これらの相互作用を理解することは,正確な気候変動予測に不可欠です.
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