| 王振华,钱锦霞,王雁,赵丽平.山西省春季降水异常时空特征研究[J].干旱地区农业研究,2006,(5):213~217 |
| 山西省春季降水异常时空特征研究 |
| Analysis on temporal and spatial features of spring precipitation anomalies in Shanxi Province |
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| DOI：10.7606/j.issn.1000-7601.2006.05.44 |
| 中文关键词: 主成分分析 旋转主成分分析 小波分析 春季降水 时空分布 山西省 |
| 英文关键词:EOF REOF wavelet analysis spring precipitation spatial and temporal feature Shanxi Province |
| 基金项目:山西省气象局项目“气候变化与山西气象灾害趋势研究”(20030303) |
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| 中文摘要: |
| 采用主成分分析(EOF)、旋转主成分分析(REOF)、小波分析方法,对山西省1960~2004年春季降水标准化距平场进行分区,并对春季降水异常的空间分布特征、时间变化规律进行分析。结果表明:山西省春季降水的主要空间异常型表现为全省一致的多雨或少雨型,这是山西省春季降水异常的主要特征。降水异常区域大致可划分为3个区,即北部区、中部区、南部区。各异常区春季降水都存在10 a以上长周期和310 a短周期振荡,但其显著周期及其年代变化差异较大。 |
| 英文摘要: |
| Using the methods of empirical orthogonal function(EOF),rotated empirical orthogonal function(REOF) and wavelet analysis,this paper zones the standardized spring precipitation field of Shanxi Province during 1960 to 2004,and analyzes the temporal and spatial features of spring precipitation.The results show that the main spatial anomaly feature is coincidently wet or dry type,and the whole province can be divided into 3 climate regions in accordance with spring precipitation.There are oscillations of spring precipitation with over 10a long-term and 310a short-term periods in all climate regions,but their obvious periods and annual changes are much different from each other. |
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