Fig. 1. Time series plot of monthly arctic oscillation Index (AOI(1)) and its 12-month moving average (AOI(12))
Fig. 2. Comparison of box plots of monthly AOI
Fig. 3. Time series of rainfall amount and rainy days during the monsoon in South Korea
Fig. 4. Time series of annual number of typhoons occurred in the North Pacific and annual number of typhoons affecting South Korea
Fig. 5. Comparison of 3-, 5-, 7- and 9-month-average AOI time series (averaging was done around January)
Fig. 6. Comparison of seasonal AOI time series
Fig. 7. Autocorrelation functions of monthly AOI and 12-month moving average AOI time series
Fig. 8. Autocorrelation functions of seasonal and average AOI time series
Fig. 9. Autocorrelation functions of rainfall amount and rainy days during the monsoon in South Korea
Fig. 10. Autocorrelation functions of the number of typhoons occurred in the North Pacific (Typhoon_NP) and the number of typhoons affecting South Korea (Typhoon_KR)
Fig. 11. Cross correlations between AOI and rainfall amount during the monsoon in South Korea
Fig. 12. Cross correlations between AOI and rainy days during the monsoon in South Korea
Fig. 13. Cross correlations between AOI and number of typhoons occurred in the North Pacific
Fig. 14. Cross correlations between AOI and number of typhoons affecting South Korea
Fig. 15. Cross correlations between average AOI and characteristics of monsoon and typhoon
Fig. 16. Cross correlations between seasonal AOI and characteristics of monsoon and typhoon
Table 1. Means and standard deviations of monthly AOI used in this study (1961~2016)
Table 2. Means and standard deviations of average and seasonal AOI data
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