Anomalous Circulation Patterns in Association with Summertime Regional Daily Precipitation Extremes over Northeast China

Figure 3

Composite anomalies of rotational (streamlines) and divergent (vectors) wind components (in m/s) at 850 hPa (a), 500 hPa (b), and 200 hPa (c) based on 26 extreme precipitation events. Shaded areas indicate stream-functions at/above the 95% confidence level by using a t-test.

(a)

(b)

(c)