Drought and Grain Crop Yields over the East European Plain under Influence of Quasibiennial Oscillation of Global Atmospheric Processes

Figure 6

Relative frequency of the cyclones occurrence (the percentage of time in the grid cell 5^° of the cyclone center) in May in the westward (a) and eastward (b) QBO phase. Denoted areas are described in text.

(a)

(b)