Spatio-temporal patterns of seasonal rainfall in Spain (1912-2000) using cluster and principal component analysis: comparison
Spatio-temporal patterns of seasonal rainfall in Spain (1912-2000) using cluster and principal component analysis: comparison
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DOI：
10.5194/angeo-22-1435-2004
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发表时间：
2004-04
影响因子：
1.9
通讯作者：
D. Muñoz-Díaz;F. Rodrigo
中科院分区：
文献类型：
--
作者：
D. Muñoz-Díaz;F. Rodrigo
摘要。在这项工作中，基于1912年至2000年期间西班牙32个地区的季节性降雨，使用聚类和主成分分析将西班牙划分为有限数量的气候均匀区。采用Ward的分层聚类方法，在冬季和春季得到3个聚类，在夏季和秋季得到4个聚类。结果与主成分分析结果相似。比较了各聚类的质心序列和各EOF的主成分序列，分析了其时间格局。两种方法的比较表明，聚类分析方法适合于建立西班牙季节降雨分布的时空格局。关键字。气象学和大气动力学（气候学；降水；一般或杂项）
Abstract. In this work, cluster and principal component analysis are used to divide Spain in a limited number of climatically homogeneous zones, based on seasonal rainfall for 32 Spanish localities for the period 1912–2000. Using the hierarchical technique of clustering Ward's method, three clusters have been obtained in winter and spring, and four clusters have been obtained in summer and autumn. Results are similar to those obtained by applying principal component analysis. Centroid series of each cluster and principal component series of each EOF have been compared to analyze the temporal patterns. The comparison of both methods indicates that cluster analysis is suitable to establish spatio-temporal patterns of seasonal rainfall distribution in Spain. Key words. Meteorology and atmospheric dynamics (climatology; precipitation; general or miscellaneous)