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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Climate of Titan ： ウィキペディア英語版 Climate of Titan The climate of Titan, the largest moon of Saturn, is similar in many respects to that of Earth, despite having a far lower surface temperature. Its thick atmosphere, methane rain, and possible cryovolcanism create an analogue, though with different materials, to the climatic changes undergone by Earth during its far shorter year. ==Temperature== Titan receives just about 1% of the amount of sunlight Earth gets.〔(Titan: A World Much Like Earth ). Space.com (2009-08-06). Retrieved on 2012-04-02.〕 The average surface temperature is about 98.29 K (−179 °C, or −290 °F). At this temperature water ice has an extremely low vapor pressure, so the atmosphere is nearly free of water vapor. However the methane in the atmosphere causes a substantial greenhouse effect which keeps the surface of Titan at a much higher temperature than what would otherwise be the thermal equilibrium.〔 See also McKay, "Titan: Greenhouse and Anti-greenhouse," ''(Astrobiology Magazine )'' November 03, 2005 (retrieved October 3, 2008)〕〔(【引用サイトリンク】title=Titan Has More Oil Than Earth )〕 Haze in Titan's atmosphere contributes to an anti-greenhouse effect by reflecting sunlight back into space, making its surface significantly colder than its upper atmosphere.〔 This partially compensates for the greenhouse warming, and keeps the surface somewhat cooler than would otherwise be expected from the greenhouse effect alone.〔Planetary Photojornal - (PIA06236: Titan: Complex 'Anti-greenhouse' )〕 According to McKay et al., "the anti-greenhouse effect on Titan reduces the surface temperature by 9 K whereas the greenhouse effect increases it by 21 K. The net effect is that the surface temperature (94 K) is 12 K warmer than the effective temperature 82 K. (the equilibrium that would be reached in the absence of any atmosphere )"〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Climate of Titan」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.