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

<div>The composite horizontal distributions of anomalous PV (units: PVU) 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. The white dotted areas indicate that the anomalies are statistically significant at a 95% confidence level (based on a two-sided Student’s <i>t</i>-test). The black dots indicate the locations of the 41 OCS events.</div>

Advances in Meteorology

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Figure 4

Figure 4: Analysis of the Anomalous Signals near the Tropopause before the Overshooting Convective System Onset over the Tibetan Plateau 