Weakening Relationship between East Asian Summer Monsoon and Asian-Pacific Oscillation after 1990s

Figure 3

Spatial distribution of correlation coefficient between the APOI and 850 hPa meridional wind during (a) 1948–1990 and (b) 1991–2016. The shaded area indicates significant correlation at the 95% confidence level based on Student’s t-test.

(a)

(b)