A shallow layer of air near the surface was likely caused by overnight cooling and wind in the area. The atmosphere above that layer showed more uniform characteristics. The temperature profile from about 850 mb up to about 710 mb over Great Falls was parallel to the [(straight, solid, green dry)(curved, dashed, blue saturated)] adiabatic lapse rate lines printed on the diagram. This was evidence of surface air moving upward and cooling by expansion at the unsaturated adiabatic lapse rate?