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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 Potential temperature ： ウィキペディア英語版 Potential temperature The potential temperature of a parcel of fluid at pressure $P$ is the temperature that the parcel would acquire if adiabatically brought to a standard reference pressure $P\_$, usually 1000 millibars. The potential temperature is denoted $\backslash theta$ and, for air, is often given by : $\backslash theta\; =\; T\; \backslash left(\backslash frac\backslash right)^,$ where $T$ is the current absolute temperature (in K) of the parcel, $R$ is the gas constant of air, and $c\_p$ is the specific heat capacity at a constant pressure. $R/c\_p\; =\; 0.286$ for air (meteorology). == Contexts == The concept of potential temperature applies to any stratified fluid. It is most frequently used in the atmospheric sciences and oceanography.〔(TAMU )〕 The reason that it is used in both fluids is that changes in pressure result in warmer fluid residing under colder fluid- examples being the fact that air temperature drops as one climbs a mountain and water temperature can increase with depth in very deep ocean trenches and within the ocean mixed layer. When potential temperature is used instead, these apparently unstable conditions vanish. 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「Potential temperature」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.