Evolution of the global properties of the turbulent cloud in our fiducial model, during the relaxation phase (shaded area with negative times) and the actual run (positive times). While turbulence leads to an initial increase of σ_v (reflected in all the other properties it affects), the sound speed remains constant during relaxation, producing a Mach number slightly above unity. During the run, instead, ℳ increases quickly to the typically observed values, because of cooling. On average, the magnetic field does not change significantly, as long as the typical density interval remains small.