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http://dx.doi.org/10.7850/jkso.2019.24.4.509

Correlation between the Pacific Decadal Oscillation and East/Japan Sea SST in the Autumn  

PAK, GYUNDO (Ocean Circulation and Climate Research Center, Korea Institute of Ocean Science and Technology)
Publication Information
The Sea:JOURNAL OF THE KOREAN SOCIETY OF OCEANOGRAPHY / v.24, no.4, 2019 , pp. 509-518 More about this Journal
Abstract
Analyses with various Sea Surface Temperature (SST) products indicate that the interannual variability of the area-averaged SST in the East/Japan Sea (EJS) is well correlated to that of Pacific Decadal Oscillation (PDO) during 1979-2018, especially in the autumn. The regression analysis with the wind vectors at 200 hPa, where the strongest jet stream flows, suggests that the long-term variability of the intensity as well as the meridional movement of the jet stream are related to the coupling of the autumn EJS SST and PDO. When the axis of the jet stream moves poleward (equatorward) with its weakening (strengthening), both the EJS SST and North Pacific SST increase (decrease). This suggests that both the intensity and meridional movement of the jet stream are possibly related to the coupling of the autumn EJS SST and PDO. However, effects of a weak jet stream during the summer and the strong East Asian winter monsoon make weak coupling between the EJS SST and PDO.
Keywords
East/Japan Sea; Sea surface temperature; Pacific decadal oscillation; Jet stream;
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