青岛地区降水的最大熵谱分析及降水与副热带高压、赤道海温之间的关系

本文论述了两部分内容:一是对青岛降水量进行了最大熵谱分析,揭示了青岛地区降水内部各种周期振动结构及它们各自的贡献大小。二是寻找影响青岛地区降水的因子,找出了它们之间的时滞关系,提出了一个长期预报方法。

A MAXIMUM ENTROPY ANALYSIS OF THE PRECIPITATION IN QINGDAO AND THE EFFECT OF THE EAST EQUATORIAL PACIFIC SURFACE TEMPERATURE AND SUBTROPICAL HIGH ON QINGDAO PRECIPITATION

In this paper, Qingdao precipitation was analysed with maximum entropy method. Its vibration with a main period (three and half Years) and a subperiod (One and half years) was revealed. Monthly data of Qingdao precipitation and east equatorial pacific surface temperature and subtropical high in 1954-1977 were used. The time lag correlations between them were analysed. It is indicated that when the east equatorial pacific surface temperature is lower or higher than normal, the subtropical high appears to be lower or higher cor respondently and the Qingdao precipitation is consequently greater or smaller.