2. Starting with positively buoyant air parcels A. A more common scenario has an air parcel sitting atop a very hot patch of ground. This makes the air parcel warmer than the surrounding air. Such a positively buoyant air parcel will probably rise by itself. Plot following environmental soundings on the graph below. The "parcel surface temperature" is the starting point of the parcels adiabat (at altitude 0 km). Note that the parcel starts out being 5C warmer than the environment; it will therefore rise by itself. Plot the adiabat for the given parcel surface temperature. Environmental Lapse Environmental Surface Parcel Surface Final parcel Stability rank (1 = Rate (Y! \"kan Temperature (T55, \"C) Temperature (TF5. r'C) height (km) most, 3 = least stable -2 15 20 3 15 20 7 15 20