摘要
通过对1954－1987年梅雨区35站梅雨期降水资料的分析，给出了梅雨降水的气候分布特征。利用自然正交函数展开的前三个特征向量场及对应的时间系数将梅雨降水分成三类六型。移动样本序列的极大熵谱分析表明，梅雨降水存在较为明显且稳定的准七年振荡，而准两年振荡则不十分明显，且不稳定。这与已有的研究结果不同。此外，还对这些振荡的地域分布作了研究。
The climatic distribution features of Meiyu precipitation are given by analyzing the Meiyu precipitation data at 35 stations from 1954 to 1987 in Meiyu region. The Meiyu precipitation can be classified into three classes and six patterns by using the first three characteristic vectors and their corresponding time coefficients. Maximum entropy spectrum analysis of the moving sample series shows that there is an obvious and stable quasi-seven year oscillation in Meiyu precipitation but the quasi-biennial oscillation is not very obvious and stable,which is different from the previous researches. In addition, we study the distribution of these oscillations
出处
《气象科学》
CSCD
北大核心
1994年第1期46-52,共7页
Journal of the Meteorological Sciences
