Research Article
Weakening Relationship between East Asian Summer Monsoon and Asian-Pacific Oscillation after 1990s
Figure 4
850 hPa wind (vectors; scale in m s−1) of strong (a) and weak (b) APO years during 1948–1990 and (c) strong and (d) weak APO years during 1991–2016. The shaded area indicates significant correlation at 95% confidence level based on Student’s t-test.
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