Synchronous bidecadal periodic changes of oxygen, phosphate and temperature between the Japan Sea deep water and the North Pacific intermediate water
Synchronous bidecadal periodic changes of oxygen, phosphate and temperature between the Japan Sea deep water and the North Pacific intermediate water
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DOI：
10.1029/2003gl018338
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发表时间：
2003-12-24
影响因子：
5.2
通讯作者：
Gamo, T
中科院分区：
文献类型：
--
作者：
Watanabe, YW;Wakita, M;Gamo, T
从近40年来日本海深水和北太平洋中间水溶解氧（O-2）、磷酸盐（PO4）和水温(T)的时间序列中，我们发现，在这两个大洋区域，O-2、PO4和T在减少0.47 mumol- 2 kg(-1) yr（-1）、增加0.003 mumol-PO4 kg(-1) yr（-1）和增加0.005°c - year -1的线性趋势叠加上，呈现出明显的约18年的双年代际振荡。两大洋区O-2、PO4和T的变化是同步的，尽管两大洋区成水系统是独立的。两个洋区的O-2、PO4和T的线性趋势和振荡也与北太平洋海面气压异常有很强的相关性，这可能影响了表层海洋状况的变化。
From time series of dissolved oxygen ( O-2), phosphate (PO4) and water temperature (T) during the last forty years in the Japan Sea Deep Water and the North Pacific Intermediate Water, we found that O-2, PO4 and T show a clear bidecadal oscillations of about 18 years superimposed on the linear trends of decrease of 0.47 mumol-O-2 kg(-1) yr(-1) and increase of 0.003 mumol-PO4 kg(-1) yr(-1) and 0.005degreesC yr-1 in both two oceanic areas. The changes of O-2, PO4 and T in the two oceanic areas were synchronized despite the water formation systems of each area being independent. Both the linear trends and the oscillations of O-2, PO4 and T in the two oceanic areas also showed a strong correlation with the anomaly of the sea surface level pressure in the North Pacific that possibly affects the change of surface oceanic condition.