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

Figure 6

The composites of geopotential height (units: gpm, blue lines) and wind fields (black arrow, and color contours indicate the areas where the zonal wind speed is greater than 30 m/s) on the dynamic tropopause height (3.5 PVU) for the (a) 5th day, (b) 4th day, (c) 3rd day, (d) 2nd day, (e) 1st day, and (f) 0 day before the OCS onset for 41 OCS. The red dots indicate the locations of the 41 OCS events.

(a)

(b)

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(f)