重庆理工大学学报（自然科学版）2017，Vol.31Issue(2)：73-79,7.DOI:10.3969/j.issn.1674-8425(z).2017.02.013
基于EOF的福建省降水量时空变化特征分析
Analyzing Spatial and Temporal Distributions of Precipitation in Fujian Province Using Empirical Orthogonal Function
摘要
Abstract
Using EOF (empirical orthogonal function)method,we analyzed the spatial and temporal distribution characteristics of precipitation data of 28 meteorological stations in Fujian province during 1960—2013.The results show that the spatial distribution of precipitation in Fujian province has two typical modes:the whole region,northwest-southeast,with the first two EOFs reflecting the three typical vector distribution fields and explaining 74.37% of total variation.In general,the values of the two feature vector distribution fields increased from southeast to northwest. And the time coefficient of modal 1 trend is increased,and the time coefficient of modal 2 trend is decreased, indicating that the trend of annual precipitation of the whole province is increased,and a wetter northwest with a larger annual precipitation variation,there is an decreasing trend.And a drier southeast with a smaller annual precipitation variation,there is an increasing trend in the Southeast Fujian.Fujian province precipitation field has four types determined by two typical modes and number for the year that is wetter in the whole province appeared for 14 years,the drier in the whole province appeared for 19 years,and the wetter in northwest and drier in southeast appeared for 7 years,and the drier in northwest and wetter in southeast appeared for 4 years.关键词
福建省/降水量/经验正交函数/时空分布Key words
Fujian province/precipitation/empirical orthogonal function/temporal and spatial distri-bution分类
天文与地球科学引用本文复制引用
赵嘉阳,王文辉,靳全锋,田超,杨淑妍,林玉蕊..基于EOF的福建省降水量时空变化特征分析[J].重庆理工大学学报（自然科学版）,2017,31(2):73-79,7.基金项目
全国统计科学研究项目"基于遥感抽样框优化技术的福建山地丘陵区农作物种植面积调查研究"(2015LZ18) （2015LZ18）
