渭河流域降水和气温的时空特征分析
文献类型:期刊论文
作者 | 何毅 ; 王飞 ; 穆兴民 ; 白桦 ; 蒋冲 ; 李锐 |
刊名 | 水土保持通报
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出版日期 | 2012 |
卷号 | 32期号:04页码:102-105 |
关键词 | 气候变化 limate change 时空特征 temporal and spatial characteristics 渭河流域 Weihe River basin |
其他题名 | Temporal and Spatial Characteristics of Temperature and |
中文摘要 | 降水和气温等气候要素对农业生产具有显著影响。根据1957—2009年渭河流域内12个代表性气象站点53a的降水和气温实测资料,采用传统统计、经验正交函数分解(EOF分析)和小波分析等方法,讨论了渭河流域降水量和气温的空间分布特征,并分析了其周期变化特点。结果表明:(1)受大尺度天气系统影响,流域降水量和气温异常的一致性是主要特点,也存在南北差异和东西差异;(2)年降水量主要存在30a或更大的周期变化特征,而年平均气温、年平均最低气温和年平均最高气温主要存在29a或更大的周期变化特征。 |
英文摘要 | Abstract:Climate factors including precipitation and temperature have significant effects on agricultural production. Traditional statistics,EOF analysis and wavelet analysis were applied to analyze the characteristics of periodic variations and spatial distribution of precipitation and temperature in this region based on data collected at the 12weather stations in Weihe River basin during 1957—2009.The results show that:(1)The precipitation and temperature in the basin is affected by larger scale weather systems.The abnormity of precipitation and temperature in Weihe River basin were simultaneous,and the abnormity of precipitation and temperature differed between south and north,and in the east and west.(2)Morlet wavelet transform indicated that the major periods for precipitation was about 30years or more,while the main periods for annual mean temperature and mean maximum temperature were about 29years or more. |
语种 | 中文 |
公开日期 | 2014-06-26 |
源URL | [http://ir.iswc.ac.cn/handle/361005/5346] ![]() |
专题 | 水土保持研究所_水保所知识产出(1956-2013) |
推荐引用方式 GB/T 7714 | 何毅,王飞,穆兴民,等. 渭河流域降水和气温的时空特征分析[J]. 水土保持通报,2012,32(04):102-105. |
APA | 何毅,王飞,穆兴民,白桦,蒋冲,&李锐.(2012).渭河流域降水和气温的时空特征分析.水土保持通报,32(04),102-105. |
MLA | 何毅,et al."渭河流域降水和气温的时空特征分析".水土保持通报 32.04(2012):102-105. |
入库方式: OAI收割
来源:水土保持研究所
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