|
The potential temperature of a parcel of fluid at pressure is the temperature that the parcel would acquire if adiabatically brought to a standard reference pressure , usually 1000 millibars. The potential temperature is denoted and, for air, is often given by : where is the current absolute temperature (in K) of the parcel, is the gas constant of air, and is the specific heat capacity at a constant pressure. 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
|