Flowfield results along the stagnation streamline of the Lost City; comparison of the standard and modified boundary conditions. Panel a: temperature profile at 50 km altitude with the standard boundary condition; panel b: temperature profile at 50 km altitude with the modified boundary condition: T, T^ve; panel c: composition of the evaporation products at 50 km altitude with the standard boundary condition; panel d: composition of the evaporation products at 50 km altitude with the modified boundary condition.