| Abstract from DBPedia | The potential temperature of a parcel of fluid at pressure is the temperature that the parcel would attain if adiabatically brought to a standard reference pressure , usually 1,000 hPa (1,000 mb). The potential temperature is denoted and, for a gas well-approximated as ideal, is 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). The reference point for potential temperature in the ocean is usually at the ocean's surface which has a water pressure of 0 dbar. The potential temperature in the ocean doesn't account for the varying heat capacities of seawater, therefore it is not a conservative measure of heat content. Graphical representation of potential temperature will always be less than the actual temperature line in a temperature vs depth graph.温位（おんい、英語: potential temperature）とは、気圧、温度の空気塊を圧力 hPaに断熱変化させたときの温度のことである。 温位をとすると、 （は気体定数、は定圧比熱） として表される。 (Source: http://dbpedia.org/resource/Potential_temperature) |
