主成分分析在气候区划中的应用
投稿时间:1986-07-24  修订日期:1986-10-27  点此下载全文
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作者单位
缪启龙 陕西省气象科学研究所 
李兆元 陕西省气象科学研究所 
窦永哲 山西省气象局 
中文摘要:对n个站、p个气候要素的气候场,可由主成分分析用前m个主成分表征气候场的气候特征;并由因子载荷量判断各主成分表示的气候意义。对陕西省100个站、17个气候要素进行主成分分析,结果前三个主成分的累积贡献率达88.8%。并由前三个主成分的分布将陕西省划分为5个气候亚带、11个气候区、26个气候小区的三级气候区划。
 
ANALYSIS OF MAJOR CLIMATIC FACTORS AND ITS APPLICATION TO CLIMATIC DEMARCATION
Abstract:For a climatic field having p climatic elements in a region embedding n weather stations, the climate may be characterized by the first m major factors in the analysis with the climatic implication of each major factor discriminated by the factor loading amount. Examination of the major factors for 17 climatic elements at 100 weather stations of Shaanxi Province shows that the accumulative contribution rate of the first three major factors comes to 88.8 percent. Based on the distribution of these three major factors, the Province can be delineated into a 3-level climatic demarcation consisting of five climatic sub-zones, eleven climatic regions and twenty-six sub-regions.
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