Overcoming CIN by Synoptic-scale Ascent
One other common mechanism for overcoming convective inhibition is synoptic-scale ascent caused by passage of a short wave or front. These processes act to lift and weaken the inversion layer. On the skew-T diagram, this effectively eliminates the inversion, shifts the inversion to the left, or some combination of the two. In either event, the inversion no longer acts to cap the ascent path of a rising air parcel. Because this process acts fairly slowly on its own, it will be most effective if it coincides with daytime heating and/or moistening of the boundary layer.