自由大気









































地球の大気の鉛直構造


宇宙空間


外気圏 (800 - 約10,000)


熱圏 (80 - 800)


電離層
(50 - 500)


中間圏 (50 - 80)


成層圏 (11 - 50)

オゾン層
(10 - 50)


対流圏 (0 - 11)










自由大気 (1 - 11)

境界層 (0 - 1)

各層の境界:圏界面
FAI定義:カーマン・ライン

※（）内は中緯度における高度(km) / 表

自由大気（じゆうたいき、英: free atmosphere、free air）とは、地球大気の上部において、空気の運動に対する地面摩擦の影響が無視できると考えられる高さ（海抜1kmから11km）の大気。自由大気の空気は、力学的に理想流体とみなすことができる。また、自由大気の底は、地衡風高度として取り扱う。


自由大気における気温、湿度、気圧等の観測にはラジオゾンデが用いられる。風向には測風気球等が用いられ、十六方位ではなく、方位角で表される[1]。




目次






  • 1 脚注


  • 2 参考文献


  • 3 関連項目


  • 4 外部リンク





脚注


[ヘルプ]




  1. ^ “気象業務法施行規則 第二章”. 気象業務法及び関連法令. 2011年1月3日閲覧。




参考文献







関連項目



  • 対流圏

  • 大気境界層

  • 地球流体力学



外部リンク

















  • 表

  • 話

  • 編

  • 歴


地球の大気

対流圏（大気境界層 • 自由大気） • 成層圏 • 中間圏 • 熱圏 • 外気圏

対流圏界面 • 成層圏界面 • 中間圏界面 • 熱圏界面

オゾン層 • 電離層



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