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本文用统计学和气候学方法分析全球主要洋流区的海温特征,所采用的月海温资料取自美国国家气候中心。经分析认为,海温的2—4a振荡现象存在于北太平洋黑潮暖流区等10个洋流区。 在厄尔尼诺年,全球大多数主要海流区海温普遍上升,它们与东太平洋赤道冷水带海温正相关显著,相反,西澳大利亚寒流区、东澳大利亚暖流区、墨西哥湾暖流区海温都下降。全球任何两个主要洋流区海温以1—3波低频耦合振荡为主,其中以1波占优势。
In this paper, the SST features of the main ocean currents in the world are analyzed by means of statistics and climatology. The monthly SST data are taken from the National Climate Center of the United States. The analysis shows that the SST anomalies 2-4a exist in the North Pacific Kuroshio current area and other 10 ocean current areas. In El Niño, the SST in most of the major ocean currents in the world has generally risen, and their positive correlation with the SST in the equatorial cold-water zone of the Eastern Pacific is significant. On the contrary, SST in the cold regions of Western Australia, the warm regions of Eastern Australia and the warm-flow regions of the Gulf of Mexico have dropped. The SST of any two major oceanic regions in the world is dominated by 1-3-wave low-frequency coupled oscillations, of which 1 wave predominates.