摘要
采用主分量分析(EOF)、旋转主分量分析(REOF)、小波分析方法,对广东省1954-2007年春季(2-5月)降水标准化距平场进行分区,并对春季降水的空间分布特征、时间变化规律进行分析。结果表明,广东省春季平均降水量和标准差变化较大;春季降水的主要空间分布型表现为全省一致偏旱(涝)型;降水区域大致可划分为4个区,即粤东区、粤北区、粤中区、粤西区。除了粤东以外,其余区域都存显著周期性变化。
In the study of the rainfall in the spring （February to May）during 1954 -2007 in Guangdong Province, the standard anomaly field was divided with the application of EOF analysis, REOF analysis and wavelet transfer analysis method. The space distribution and temporal change rules of the spring precipitation was analyzed. It was indicated that the average precipitation and the standard deviation changed greatly. The spacial distribution showed that the whole province was in the drought （waterlogging） area. And the whole area of the Province was divided into 4 precipitation areas： East Area, North Area, Middle Area and West Area. All the precipitation area ex- perienced noticeable periodic change except the East Area.
出处
《人民珠江》
2009年第4期1-5,共5页
Pearl River
关键词
主分量分析
旋转主分量分析
小波分析
春季降水
时空分布
广东省
EOF analysis
REOF analysis
wavelet transfer analysis
spring precipitation
distribution in time and space
Guangdong Province
