Figure 2

| Remote impact of NINO3 on volume transport through external climatic factors in summer (JJA). (a) Volume transport anomaly (blue bars) and averaged NINO3 anomaly (red line) for summer. E and L on top of (a) indicate the developing years of El Niño and La Niña events, respectively. Surrounding black circles mean that summer NINO3 and PDO are in phase. (b) Composite maps of the averaged anomalies of wind velocities and geopotential height at 850 hPa during the developing summer of El Niño years (2009/10 and 2015/16). CC indicates a cyclonic circulation, and ACC indicates an anti-cyclonic circulation. Gray dashed lines denote statistical significance at the 90% confidence level. (c) Composite maps of the averaged anomalies of sea surface temperature during the developing summer of El Niño years (2009/10 and 2015/16). (d) Wind velocity anomalies over the Korea/Tsushima Strait during the developing summer of El Niño years. The figure was created using MATLAB (ver. 9.9.0.1592791 (R2020b) Update 5). The coastline is based on the ETOPO1 dataset (https://www.ngdc.noaa.gov/).