基于小波分析的双城市降水量变化分析及预测

分析不同取样周期下生成的小波图像,对图中显示的与降水周期有关的信息加以分析,并预测未来几年降水量的丰枯情况。先用已有数据进行验证性试验,结果周期为8年时准确性达到75%,周期为3年时准确性达到100%。根据双城市1952-2006年降水数据,利用小波模型分析降水周期变化规律,并对未来7年的降水情况进行预测,整体降水量偏低,只有2009、2012和2013年高于491mm。

Analysis and Prediction of Precipitation in Shuangcheng City Based on Wavelet Analysis

In this paper,the wavelet images of different sampling cycle and the information of precipitation cycle in images are analyzed,and the wet and dry conditions in the future are predicted.By analyzing the existing data,it shows that the accuracy is 75% when the circle is 8 years,while 100% at 3 years.According to precipitation data of 1952-2006 year in Shuangcheng City,the change rules of precipitation cycle are analyzed by using wavelet model and the precipitation of the next 7 years are predicted.It is shown that the precipitation is low,and the precipitation is more than 491 mm only in the years of 2009,2012 and 2013.