摘要
本文用使海面至100m水层的平均温度(T_av)表征海洋上层热含量。讨论了1964-1982年期间热带西北太平洋海洋上层热含量的季节和年际变化特征。指出,研究海域海洋上层热含量的年际变化与E1 Nino事件相联系,在E1 Nino事件期间,出现大面积的T_av负距平,高热含量海区分布范围明显缩小。
The Seasonal and inteiannual variable characters of heat content of the oceanic upper layer in northwest Pacific during the period of 1964-1982 are discussed. The heal content of the oceanic upper layer is indicated by using average temperature from surface to 100m depth (Tar). Under usual conditions, the region South of 18°N is characterized by high heat content. After the appearance of El Nino, the heat content becomes very low, and the area of high heat content decreases rapidly. This feature was quite evident in 1965 , 1968-1969, 1972-1973, 1976 and 1982. In this paper, two time series of number of gridpoint on which Tar is greater or equal to 27℃ (Tar≥27℃) and Tar is greater or equal to 28℃ (Tar≥28℃) respectively, were established. These lime series may represent the interannual variability of the area of high content. The power spectra of the two time series show the significant peaks at four year period and two year period.
出处
《热带海洋》
CSCD
1990年第2期78-85,共8页
