【摘要】 应用1960～2000年黑河流域13个站41a的年降水资料,通过EOF和REOF方法分析了黑河流域年降水的空间分布特征,并进行气候分区;采用线性倾向估计研究黑河流域年降水的变化趋势。在以上分析的基础上,进行流域分区、分季节降水预报。经评分检验,达到了一定的准确率,预报效果稳定、可靠,具有一定的实用价值。更多还原

【Abstract】 In this paper, using annual precipitation data of 13 stations during 1960 to 2000, characteristics of spatial distribution of annual precipitation in Heihe field are analyzed and division of climate district is done with EOF and REOF methods. Tendency of annual precipitation in Heihe filed is studied by using linear tendency estimation. On the base of above analysis, precipitation can be predicted in each divided area and in different season .Through marking examining, it has reached certain rate of accuracy. The result of prediction is stable,dependable and available.更多还原