まとめ
航空機による測定によると,雲は,モデルが予測するよりも,熱帯ではるかに多くの太陽放射線を吸収している. これは,雲の放射線相互作用とその気候への影響を理解する上で大きなギャップがあることを示唆しています.
科学分野:
- 大気科学 大気科学
- 放射能の移転について
- クラウド物理学 クラウド物理
背景:
- 雲による太陽放射線の吸収は,地球のエネルギー予算にとって極めて重要です.
- 現在の気候モデルは,しばしば,雲の放射性効果を過小評価しています.
- 理論的な予測と,曇った大気中の観測された太陽の流動の間に不一致がある.
研究 の 目的:
- 熱帯雲による太陽吸収の測定とモデルの間の不一致を調査する.
- 航空機ベースの測定を使用して異常な太陽吸収を定量化するために.
- 現在の雲放射相互作用モデルの精度を評価する.
主な方法:
- 協調した積み重ねられた航空機を使用して,in-situの雲放射実験を実施しました.
- さまざまな高度で正確な太陽流量測定を行うために,同一の計測器を展開しました.
- 異なる大気レベルでの雲強制比率を決定するために,太陽流量データを分析しました.
主要な成果:
- 航空機による測定は,熱帯雲による異常な量の太陽吸収を明らかにした.
- 観測された20kmの雲圧力の比率は1.58. でした.
- この比率は,モデルが予測した1.0.0の値から大きく離れている.
結論:
- 観測された太陽吸収と理論的に推定された雲による太陽吸収の間で大きな違いがあります.
- 現在のモデルは,雲と太陽放射線の相互作用を不十分に表しています.
- 雲の放射性プロセスの理解とモデリングを改善するためにさらなる研究が必要である.
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