Summer Drought Patterns in the Middle-Lower Reaches of the Yangtze River Basin and Their Connections with Atmospheric Circulation before and after 1980

Figure 10

500 hPa GPH (contour) and its corresponding anomalies (shading) (units: gpm) of the SDNF pattern in the summers of (a) 1963, (b) 1965, (c) 1991, and (d) 2003; blue lines denote the climatology of 5880 gpm.

(a)

(b)

(c)

(d)