トロピカル・トロポスフィアの垂直温度構造におけるマルチデケダルの変化
1Air Resources Laboratory, National Oceanic and Atmospheric Administration, R/ARL, 1315 East-West Highway, Silver Spring, MD 20910, USA. Program for Climate Model Diagnostics and Intercomparison, Lawrence Livermore National L.
まとめ
衛星データは,1979年以来の地表記録よりも,下層トロポスフィアの温暖化は少ないことを示しています. これは,特に熱帯では,より大きな地表温暖化と,大気安定性の低下を示しており,これは1960年以前には見られなかった傾向です.
科学分野:
- 気候科学 気候科学
- 大気物理学 大気物理学
- リモートセンシング (リモートセンサー)
背景:
- 衛星観測と地表観測の差異があることから,地球全体の気温の動向が議論されている.
- 大気の気温プロフィールを理解することは,気候変動の評価に不可欠です.
研究 の 目的:
- グローバルな低熱帯圏の気温傾向の不一致を調査するために.
- 大気温プロファイルと安定性の変化を分析する.
主な方法:
- 1979年以来の衛星による気温データの分析.
- 放射探査観測と地表気象記録との比較.
- 大気中の静的安定性と失効率の変化の評価.
主要な成果:
- 衛星による低熱帯気温観測は,1979年以来の地表観測記録よりも温暖化が少ないことを示している.
- ラジオ探査機のデータは,熱帯の熱帯圏での熱帯圏温暖化よりも,より大きな表面温暖化を確認しています.
- 観測された失効率の変化は,大気の静的安定性の低下を示し,モデルシミュレーションを超えています.
結論:
- 衛星と地表の気温の動向の差異は1979年以来続いている.
- 観測された大気の変化は,以前のデータにはない安定性の重要な変化を示唆しています.
- これらの発見を気候モデルと調和させるため,さらなる研究が必要である.
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