| 1956—2010年辽宁西部夏季降水的特征分析 |
| |
| 引用本文： | 唐帅,孟振雄.1956—2010年辽宁西部夏季降水的特征分析[J].现代农业科技,2014(22):238-240. |
| |
| 作者姓名： | 唐帅 孟振雄 |
| |
| 作者单位： | 1. 辽宁省兴城市气象局,辽宁兴城,125100
2. 葫芦岛市气象局 |
| |
| 摘 要： | 该文利用1956—2010年辽宁省西部8个气象观测站6—8月的降水量资料,通过趋势分析、经验正交函数(EOF)分解、曼-肯德尔(Mann-Kendall)法和小波分析等多种统计方法,研究了辽宁西部自1956—2010年夏季降水的特征。结果表明:辽西地区夏季平均降水量的空间分布趋势为从南向北递减,时间分布上呈双峰型;平均夏季降水量呈下降的趋势,并且趋势不显著;夏季降水的分布主要呈南北差异型,降水异常以北少南多的分布特征为主,同时也存在降水异常东西反相的分布特征;降水存在10年尺度的显著震荡周期。
|
| 关 键 词： | 降水特征 EOF 小波分析 辽宁西部 1956—2010年 |
Characteristics Analysis of Summer Precipitation in Western Liaoning Province During 1956-2010 |
| |
| Authors: | TANG Shuai MENG Zhen-xiong |
| |
| Abstract: | Based on the precipitation datas of 8 stations in summer(from June to August)from 1956 to 2010(total of 55 years)in western Liaoning Province,the method of trend analysis,empirical orthogonal function(EOF)decomposition,Mann-Kendall mutation method and wavelet analysis were used to study the characteristics of summer precipitation in western Liaoning Province. The results showed that the spatial distribution of average summer precipitation in western Liaoning Province decreased from south to north,and the time distribution was bimodal;average summer rainfall decreased,and the trend was not significant;the summer rainfall distribution was mainly north-south differences type,and also sometimes west-east differences type;the summer precipitation had a significant 10a-scale oscillation cycle. |
| |
| Keywords: | precipitation characteristics empirical orthogonal function wavelet analysis western Liaoning Province 1956-2010 |
| 本文献已被 万方数据 等数据库收录！ |
|
