Manifestation of the Pacific Decadal Oscillation in the Kuroshio
Manifestation of the Pacific Decadal Oscillation in the Kuroshio
复制标题
太平洋年代际振荡在黑潮中的表现
DOI：
10.1029/2009gl039216
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发表时间：
2009-08-28
影响因子：
5.2
通讯作者：
Chang, Kyung-Il
中科院分区：
文献类型：
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作者：
Andres, Magdalena;Park, Jae-Hun;Chang, Kyung-Il
太平洋年代际振荡指数与黑潮通过东海的垂直积分输送有很强的相关性。运输确定从卫星测高校准与原位数据和PDO指数（0.76）的相关性是最高的零滞后。东海黑潮和琉球海流携带的PDO相关输运变化总量约为4 Sv。此外，PDO指数在零滞后时与ECS纬度北太平洋中部的NCEP风应力旋度呈强负相关。根据风应力旋度异常计算的Sverdrup输送与观测到的输送变化一致。最后，PDO指数和ECS-Kuroshio运输都与Tokara海峡的黑潮位置指数呈负相关;这可以通过一个模型来解释，在该模型中，黑潮路径在运输低时由地形引导，在运输高时由惯性控制。
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.