Analysis of the Anomalous Signals near the Tropopause before the Overshooting Convective System Onset over the Tibetan Plateau

Figure 7

The composite horizontal distributions of vertical velocity (units: 10⁻² Pa/s) on 350 K isentropic surface for the (a) 7th day, (b) 6th day, (c) 5th day, (d) 4th day, (e) 3rd day, (f) 2nd day, (g) 1st day, and (h) 0 day before the OCS onset for 41 OCS events.