トロポスフィアの上部を潤す放射線のサイン
Brian J Soden1, Darren L Jackson, V Ramaswamy
1Rosenstiel School for Marine and Atmospheric Science, University of Miami, Miami, FL 33149, USA. bsoden@rsmas.miami.edu
Science (New York, N.Y.)
|October 8, 2005
まとめ
気候変動の重要な指標である上層熱帯圏の水蒸気は増加していることが観察されています. 衛星データは,この傾向を確認し,将来の地球温暖化に関する気候モデルの予測を裏付けている.
科学分野:
- 大気科学 大気科学
- 気候科学 気候科学
- リモートセンシングによる遠隔感知
背景:
- 温室効果ガスの増加は2100年までに上層熱帯圏の水蒸気を2倍にすると予測されています.
- トロポスフィアの上部の加湿は,人間の活動による気候温暖化を増幅する.
- 従来の観測システムは,これらの変化を検出する上で限界があります.
研究 の 目的:
- 衛星データを用いて上部熱帯圏の水分化を検知し,特徴づけること.
- 水蒸気変化の気候モデルシミュレーションを検証するために.
- 将来の温暖化予測のための気候モデルの信頼性を評価する.
主な方法:
- 1982年から2004年までの衛星測定の分析.
- トロポスフィアの上層部の水分化に関連した独特の放射性シグネチャーの識別.
- 観測された傾向と気候モデルの出力との比較.
主要な成果:
- トロポスフィアの上部の湿潤の明確な放射性シグネチャーが特定されました.
- 1982年から2004年の間に観測された加湿傾向は,衛星データによって正確に捉えられた.
- 気候モデルシミュレーションでは,観測された上部熱帯圏の水分補給を成功裏に再現しました.
結論:
- 衛星観測により,上層トロポスフィアの有意な加湿が確認されています.
- この発見は,気候モデルによる将来の地球温暖化に関する予測に信頼性を与えます.
- 水蒸気変化の正確な検出は,気候変動の予測に対する信頼を強める.
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