メソスケール数値モデルのメソスケール数値モデルを使用して,火星の火山の大気熱循環のシミュレーション
Scot C R Rafkin1, Magdalena R V Sta Maria, Timothy I Michaels
1Department of Meteorology, San José State University, One Washington Square, San José, California 95117, USA. rafkin@metsun1.met.sjsu.edu
Nature
|October 18, 2002
まとめ
塵雲のような火星のメソスケール大気現象は,新しいメソスケールモデルを使用してよりよく理解できます. これらのモデルは,塵を膨大な距離に運ぶ大規模な熱循環を明らかにしています.
科学分野:
- 惑星科学は惑星科学である.
- 大気ダイナミクス 大気ダイナミクス
- 火星気象学 火星気象学
背景:
- メソスケール (<100 km) の大気現象は,火星では一般的です.
- 限られたデータは,火星の大気動態の数値モデリングを必要とします.
- 一般的な循環モデルには,メソスケール現象の解像度が不足しています.
研究 の 目的:
- 火星の大気中規模現象を調査する.
- メソスケールモデルを使用して,アーシア・モンスの上空にある渦巻きの塵雲をシミュレートする.
- 火星の塵の移動の動態を理解するために.
主な方法:
- 火星地域大気モデリングシステム (MRAMS) を利用しました.
- 240kmから3kmまでのグリッドサイズの内蔵モデルの階層を採用しました.
- メソスケールの塵雲の形成と移動をシミュレート.
主要な成果:
- Arsia Monsの上の塵雲は,より大きく,光学的に薄い熱循環を示しています.
- この循環は,高さ30kmまでの高さに達します.
- 何千キロメートルにもわたって,大きな水平塵の輸送が起こります.
結論:
- メソスケールモデルは,火星の大気現象の解明に不可欠です.
- アルシア・モンスの塵雲は,深い熱循環の目に見える表れである.
- 火星の熱循環は,地球上の塵の輸送に重要な役割を果たしています.
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