Publication Date:
2022-05-25
Description:
Author Posting. © American Geophysical Union, 2009. This article is posted here by permission of American Geophysical Union for personal use, not for redistribution. The definitive version was published in Geophysical Research Letters 36 (2009): L16602, doi:10.1029/2009GL039216.
Description:
Pacific Decadal Oscillation (PDO) index is strongly correlated with vertically integrated transport carried by the Kuroshio through the East China Sea (ECS). Transport was determined from satellite altimetry calibrated with in situ data and its correlation with PDO index (0.76) is highest at zero lag. Total PDO-correlated transport variation carried by the ECS-Kuroshio and Ryukyu Current is about 4 Sv. In addition, PDO index is strongly negatively correlated, at zero lag, with NCEP wind-stress-curl over the central North Pacific at ECS latitudes. Sverdrup transport, calculated from wind-stress-curl anomalies, is consistent with the observed transport variations. Finally, PDO index and ECS-Kuroshio transport are each negatively correlated with Kuroshio Position Index in the Tokara Strait; this can be explained by a model in which Kuroshio path is steered by topography when transport is low and is inertially controlled when transport is high.
Description:
MA, MW and JP were supported by ONR grant
N000140210271. XZ was supported by the National Natural Science
Foundation of China under grant 40776021 and the National Basic
Research Programs of China under grant 2006CB400603. KK and KC
were supported by the Korea EAST-I Program.
Keywords:
Kuroshio
;
PDO
;
Transport
Repository Name:
Woods Hole Open Access Server
Type:
Article
Format:
application/pdf
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