海洋预报2011，Vol.28Issue(5)：50-60,11.
赤道外北太平洋冬夏海温场的EOF分析
EOF analysis on sea temperature field in the Extratropical North Pacific
摘要
Abstract
Based on the higher resolution SODA data, EOF diagnosis on temperature of upper seawater is made in extratropical North Pacific, especially in mid-latitude where SST anomalies obvious seas (which is called key area). The results show that for the first mode of space field, there is positive high value zone at 40 °N Midwest of North Pacific in winter and summer. The anomalous trends of SST in winter and summer are same, which is sustained in year-scale. There are no obvious interannual variations between the two seasons, but 20-year inter-decadal variations are significant, suggesting the impacts of North Pacific Decadal Oscillation (PDO) on the SST change. In the east and west sea region of the Honshu, there are strong positive anomalies in winter and summer near sea surface, while only the east region remains at sub-surface. It indicates that the ocean temperature of near-surface is significantly affected by solar radiation and evaporation, but the sub-surface temperature is mainly controlled by the vertical motion of flow field.关键词
北太平洋/海温异常/EOF分析/PDOKey words
North Pacific/ sea temperature/ EOF analysis/ anomalies分类
海洋科学引用本文复制引用
路凯程,廖前锋,张铭..赤道外北太平洋冬夏海温场的EOF分析[J].海洋预报,2011,28(5):50-60,11.基金项目
国家“973”项目-北太平洋副热带环流变异对大气强迫的反馈作用(2007CB411805) （2007CB411805）
