In the stratosphere, the normal vertical (*) gradient in this quantity is inverted, causing the lapse rate to change sign.
One form of this quantity is proportional to a standard pressure divided by pressure, all raised to the two-sevenths power, according to Poisson's equation. The square of the BruntÂ–VÃ¤isÃ¤lÃ¤ frequency for an atmospheric parcel is proportional to the spatial derivative of the natural log of that form of this quantity, which is denoted theta and is its "potential" form. In the stratosphere, the normal vertical (*) gradient in this quantity is inverted, causing the lapse rate to change sign. Relative humidity can be calculated in terms of the "wet-bulb" and "dry-bulb" forms of this quantity. It's not density, but weather fronts are generally classified as to whether they have high or low values of this quantity. For 10 points, name this quantity whose "standard" form for 22.4 liters of gas at one atmosphere equals zero degrees Celsius.
One form of this quantity is proportional to a standard pressure divided by pressure, all raised to the two-sevenths power, according to Poisson's equation.
temperature [prompt on T or theta]