Research Article

Why the Increasing Trend of Summer Rainfall over North China Has Halted since the Mid-1990s

Figure 9

Latitude-height cross section of difference of vertical velocity along 116.25°E in JA by 1997–2016 mean minus 1979–1996 mean (unit: 10−2 Pa/s). Shaded areas are statistically significant at the 95% confidence level according to Student’s t-test. The red line shows North China.