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首页> 外文期刊>Journal of Geophysical Research, C. Oceans: JGR >Decadal variability of the upper ocean heat content in the East/Japan Sea and its possible relationship to northwestern Pacific variability
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Decadal variability of the upper ocean heat content in the East/Japan Sea and its possible relationship to northwestern Pacific variability

机译：东/日本海上层热含量的年代际变率及其与西北太平洋变率的可能关系

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摘要

The upper ocean heat content variability in the East/Japan Sea was investigated using a 40 year temperature and salinity data set from 1968 to 2007. Decadal variability was identified as the dominant mode of variability in the upper ocean (0-300 m) aside from the seasonal cycle. The decadal variability is strong to the west of northern Honshu, west of the Tsugaru Strait, and west of southern Hokkaido. Temperature anomalies at 50-125 m exhibit a large contribution to the decadal variability, particularly in the eastern part of the East/Japan Sea. The vertical structure of regressed temperature anomalies and the spatial patterns of regressed 10℃ isotherms in the East/Japan Sea suggest that the decadal variability is related to upper ocean circulation in the East/Japan Sea. The decadal variability also exhibits an increasing trend, which indicates that the regions showing large decadal variations experienced warming on decadal time scales. Further analysis shows that the decadal variability in the East/Japan Sea is not locally isolated but is related to variability in the northwestern Pacific.
机译：使用1968年至2007年的40年温度和盐度数据集，对东/日本海的上部海洋热量含量变化进行了研究。除年代际变化之外，年代际变化被确定为除了（0-300 m）以外的上部海洋变化的主要方式。季节周期。本州以北，津轻海峡以西和北海道以南以西的年代际变化很大。 50-125 m的温度异常对年代际变化表现出很大的影响，特别是在东/日本海的东部。东/日本海温度异常的垂直结构和10℃等温线的空间格局表明，年代际变化与东/日本海上层海洋环流有关。年代际变化也呈现出增加的趋势，这表明年代际变化大的地区在年代际尺度上经历了变暖。进一步的分析表明，东/日本海的年代际变化不是局部孤立的，而是与西北太平洋的变化有关。

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