金星の上層雲層の形態学と動態学
W J Markiewicz1, D V Titov, S S Limaye
1Max-Planck-Institut für Sonnensystemforschung, D-37191 Katlenburg-Lindau, Germany. markiewicz@mps.mpg.de
Nature
|November 30, 2007
まとめ
ヴィーナス (Venus) ヴィーナス (Venus) ヴィーナス (Venus) ヴィーナス (Venus) ヴィーナス (Venus) ヴィーナス (Venus) とは,
科学分野:
- 惑星科学は惑星科学である.
- 大気科学 大気科学
- 金星の科学は,金星の科学である.
背景:
- 金星には,主に硫酸と未知のエアロゾールで構成された濃厚な雲層があります.
- 金星の雲頂部の急速な逆行回転,または超回転は,未だに説明できない大気現象である.
研究 の 目的:
- 金星の雲層の地球規模と小規模な性質を調査する.
- 雲の動態における時間的および緯度の変動を分析する.
- 金星の大気圏内の風速を導き出すために.
主な方法:
- ヴィーナス・エクスプレス号のヴィーナス・モニタリング・カメラからの観測を活用したものです.
- 雲の性質を分析し,コンベクティブ細胞のサイズと変動性を含みます.
- 風速と大気の変化を追跡する.
主要な成果:
- 金星の南極地域には大きな変動があり,急速な変化が観測されています.
- サブソーラーポイント付近のコンベクト細胞は,以前に推定されたより小さい.
- 証拠によると,これらの細胞は上層の雲層に限られている.
結論:
- 南極地域における急速な変動は,二酸化硫黄がメソスフィアに注入されていることと関連している可能性がある.
- より小さなコンベクティブ細胞は,上層雲層に閉じ込められることを示し,以前の大気モデルを洗練しています.
- これらの発見は,金星の大気の超回転を駆動するダイナミクスの理解に貢献します.
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