摘要
采用Mann—Kendall及自然正交分解（E（）F）方法，对黄河上游地区39个降水观测站1957～2003年系列资料进行趋势检验与距平场的EOF分析，结果表明该区域的降水表现平稳，并存在“全部一致型”、“东西相反型”和“南北相反型”三种典型的降水类型。其中第一特征向量的方差贡献率占37．2％，“全部一致型”的降水分布类型在该区域为主导。
Based on the precipitation data from the meteorological stations in the upper Yellow River, the Mann- Kendall method and Empirical Orthogonal Function （EOF） analysis are applied to study the tendency characteristics of precipitation changes over the past 47 years in the upper Yellow River Basin. The results indicate that precipitation displays the calm trends, and also show that there are three precipitation structures in the region, namely, all-consistency model, north-south reverse model and west-east reerse model. The first eigenvector plays a main role in the study area, accounting for 37.2% of the accumulation contribution ret.
出处
《红水河》
2009年第4期57-60,共4页
Hongshui River
关键词
降水
自然正交分解
黄河上游
precipitation
Empirical Orthogonal Function （EOF）
the upper Yellow River
