Name:

potential_temperature

Abbreviation:

pt

Unit:

K

Definition	The temperature that an unsaturated parcel of dry air would have if brought adiabatically and reversibly from its initial state to a standard pressure p_o, typically 1000 hPa.
Validity	instantaneous
Comment

GRIB 2	Discipline = 0     Parameter Category = 0     Parameter Number = 2     Type of first fixed surface = 109 Type of second fixed surface = All 1's Scale factor of first fixed surface = 6 Scale factor of second fixed surface = All 1's Scaled value of first fixed surface = 2 Scaled value of second fixed surface = All 1's
	GRIB 2 and C-code for: Deterministic forecast, Perturbed forecast and Control forecast