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Updated: Jul 12, 2026

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Scattering And Absorption of Light in Planetary Regoliths
Published on: July 1, 2019
金星の大気中の熱コントラスト: 先駆的な金星探査機のデータからの初期評価
まとめ
ヴィーナス探査機"パイオニア・ヴィーナス"の探査機は,ヴィーナス雲の内部で気温と圧力の大きな変動を明らかにし,強いゾーン風と大気不安定性を示した. これらの発見は,金星の複雑な大気動態を強調しています.
科学分野:
- 惑星科学は惑星科学である.
- 大気科学 大気科学
- 金星の探査 ヴィーナス探査
背景:
- 金星は,複雑な雲の層を持つ濃厚な大気を持っています.
- 以前のミッションは,金星の大気構造と動態に関する限られたデータを提供した.
研究 の 目的:
- パイオニア・ヴェーナス探査機からの温度と圧力プロフィールを分析するために.
- 金星の大気圏内の大気動力学と雲の性質を調査する.
主な方法:
- 4つのパイオニア・ヴェーナス探査機を用いた温度と圧力の下降測定.
- 高度プロファイルの分析により,変動や大気現象を特定する.
主要な成果:
- 金星の雲 (45~61kmの高さ) の内部で,気温と圧力の大きな違いが観測されました.
- 高緯度探査機は25 Kの低温と最大49 mbarの低圧を記録した.
- ゾーン風は40~60kmの範囲で計算され,軸対称性のない風の成分が証明されています.
- 金星の雲は予想より10〜20K暖かいもので,コンベクト的に不安定な中間雲層がある.
- 雲の上でのラップスレートの急激な減少,100kmで観測された重複波.
結論:
- 観測された圧力差は,強いゾーン風のサイクロストロフィックバランスをサポートします.
- 吸収された熱放射線に起因する雲の温暖化と不安定性.
- 雲の上の大気構造は,明確な平流圏の特徴を示している.
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