エアロゾール-雲-気候の冷却は,船の軌道のデータによって過大評価されています
Franziska Glassmeier1,2,3, Fabian Hoffmann3,4,5, Jill S Johnson6
1Department of Geoscience and Remote Sensing, Delft University of Technology, P.O. Box 5048, 2600 GA Delft, Netherlands. f.glassmeier@tudelft.nl.
Science (New York, N.Y.)
|January 29, 2021
まとめ
人為的なエアロゾールは 雲の反射性を変化させますが 船舶の軌跡の研究では 気候の冷却効果を過大評価しています 雲の減少を考慮することは,エアロゾールフォッシングの正確な気候予測に不可欠です.
科学分野:
- 大気科学
- 気候科学
- 雲の物理
背景:
- 人為的なエアロゾールは,雲の性質,特にストラトキュミュルス雲の甲板を変えることで,気候に大きな影響を与える.
- エアロゾールによる混合による雲の量の変化は,気候予測の重要な不確実性を表しています.
研究 の 目的:
- 人為的なエアロゾールのストラトキュミュルス雲量に対する気象学的強制を推定するための船軌跡研究の信頼性を評価する.
- 船路データから得られた冷却効果の過大評価を定量化し,雲量の変化の影響を評価する.
主な方法:
- ストラトキュミュルス雲の衛星観測と詳細な数値シミュレーションの比較
- 降水しないストラトキュミュルス雲のエアロゾール強化雲の混合の分析.
主要な成果:
- 航路の研究では,ヒトによるエアロゾールによるストラトキュミュルス雲の冷却効果を 200%まで過大評価しています.
- エアロゾールによるストラトキュミュルス雲の減少は,放射性冷却効果を相殺することができます.
結論:
- 船の軌跡の研究は,ストラトキュミュルスに対する世界的な気候学的エアロゾール強制を代表するものではありません.
- 正確な気候強制評価は,エアロゾールによるストラトキュミュルス雲量の減少による温暖化効果を組み込む必要があります.
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