【摘要】 <正> 近年来运用海表温度作副热带高压和长期天气预报方面取得了显著效果,为了进一步探讨海洋对气候和长期天气过程的影响,必须重视海温场的特征分析。这几年已有一些工作,从不同侧面对北太平洋海温场进行研究。本文试图从海—气相互作用的角度分析北太平洋海温场的时空分布特征及其年际变动,进而讨论它们对大气的影响。 分析结果表明,北太平洋海温场既受太阳辐射、海—陆分布和大气环流的制约,存在着随季节变化的自相关性,许多洋流区存在多频非随机振荡,同时,各主要洋流区之间还更多还原

【Abstract】 The data used in this study are monthly mean sea temperatures covering the Pacific between 50°N and 10°s during the period 1949-1975. In this paper, empirical orthogonal, correlation and energy spectrum analysis methods were used.We have analysed the seasonal variations, the geographical distributions and interannual variarions of the sea surface temperature and some relationships among the currents in the North Pacific Ocean. The charcteristics of the sea temperature anomalies in the North Pacific are shown as follows: the large horizontal extent; the large vertical depth ; the strong anomalous magnitude and the significant long-term oscillation. Finally, the possible effects of the sea temperature anomalies on the general circulation, and the relationship between the sea surface temperature and the North Pacific Subtropical High have also been discussed.更多还原