赤道东太平洋海温长期变化中的突变现象及其与全球增温的同步性

运用１８５４～１９９０年的冬季海温资料，对赤道东太平洋海温的年际及年代际变化进行分析，并运用滑动ｔ－检验方法对其突变性进行了讨论，发现赤道东太平洋海温具有三次突变增温过程，分别发生在上世纪末、本世纪２０年代和５０年代。另外，通过求滑动相关系数，发现赤道东太平洋海温与全球其他地区海温变化的相关性具有显著的年代际的阶段性。通过对比及相关分析，发现全球增温与赤道东太平洋的增温具有显著的同步性。在年际及年代际尺度场均表现出较强的正相关。

ABRUPT CHANGES OF SST IN THE EAST EQUATORIAL PACIFIC IN THE PAST CENTURY AND ITS SYNCHRONISM WITH THE GLOBAL WARMING

The interannual and interdecadal variation of sea surface temperature (SST) in the east equatorial Pacific(EEP) from 1854 to 1990 is investigated in terms of the method of running t -test. The results indicate that the SST of east equatorial Pacific shows three sudden increasings respectively in the end of the last century, 1920s and 1950s. Based on the caeculation of running coherence coefficients, one can find that the relationship between the SST in EEP and the counterpart in the other areas over the global ocean shows strongly indecadal variations and the change of SST in EEP is synchronous with the global warming.