摘要
本文综合运用奇异交叉谱分析等多种气候诊断方法研究江苏月平均最高、最低气温振动的准周期变化的时空分布特征。结果发现 :江苏逐月最高、最低气温分布型态分别为经向型、纬向型 ;两者存在 2至 3年周期 ,显著耦合周期为 3.5年及 16 .5年。本文同时讨论了奇异谱分析、奇异交叉谱分析、小波分析、最大熵谱分析。
In the paper,spectrum features of the monthly average extreme high and low temperature of Jiangsu province are studied by using several spectrum analyses,such as singular spectrum analysis(SSA),singular cross spectrum analysis(SCSC),wavelet analysis(WTA) and so on.We find that the monthly average extreme high temperature of Jiangsu has a latitudinal distribution and a 4-year period,and the low has a longitudinal distribution and a three-year period.The couple periods between the high and the low are 3.5-year and 16.5-year.We also discuss these spectrum analyses.
出处
《气象科学》
CSCD
北大核心
2002年第2期159-166,共8页
Journal of the Meteorological Sciences
基金
江苏自然科学基金 ( BK971 83)项目资助
关键词
最高气温
最低气温
谱特征
Extreme high temperature Extreme low temperature Spectrum characters
