中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 湖北省1957-2009年降水时空变化特征分析 水土保持研究 2010,17 (6) 237-241
Position: Home > Articles > Analysis on Spatial-Temporal Characteristics of Precipitaiotn During 1957-2009 in Hubei Province Research of Soil and Water Conservation 2010,17 (6) 237-241

湖北省1957-2009年降水时空变化特征分析

作  者：
蔡道明;鄢铁平;廖炜;熊安元;吴茜;吴宜进
单  位：
湖北省水土保持监测中心;华中师范大学;国家气象信息中心
关键词：
湖北省;年降水;EOF;REOF;小波分析
摘  要：
利用湖北省21个气象站1957-2009年的逐日降水资料,采用EOF、REOF和小波分析对湖北省年降水的空间分布和周期特征进行初步研究。研究结果表明:EOF分析得到的前3个典型场可以很好的反映湖北降水空间分布的特征,即具有整体一致、南北相反及中部和周围地区相反。REOF分析得到的前6个空间模态可以较好地代表湖北年降水的6个异常敏感区,分别为鄂西北区、鄂北区、鄂东北区、鄂东南区、鄂中南区、鄂西南区。利用复Morlet小波函数对湖北年降水的周期性进行研究,表明湖北年降水存在着明显的3 a、7 a、14 a的特征时间尺度和周期性振荡;从大的周期转变来看,今后一段时间内,湖北省的年降水量会逐年减少,之后可能进入一个相对干旱时期。
译  名：
Analysis on Spatial-Temporal Characteristics of Precipitaiotn During 1957-2009 in Hubei Province
作  者：
CAI Dao-ming1,YAN Tie-ping2,LIAO Wei2,XIONG An-yuan3,WU Xi1,WU Yi-jin1(1.School of Urban and Environmental Sciences,Huazhong Normal University,Wuhan 430079,China;2.Soil and Water Conservation Supervision and Monitoring Center,Wuhan 430069,China;3.National Meteorological Informantion Centre,Beijing 100081,China)
关键词：
Hubei province;annual precipitation;EOF;REOF;wavelet analysis
摘  要：
Based on annual precipitation data over 21 stations during 1957-2009 in Hubei province,the spatial-temporal characteristics are studied by applying the methods of EOF,REOF and wavelet analysis.The most typical pattern of annual precipitation is the dry-wet consistency.Other typical patterns show the dry-wet difference.For example,it is wet(or dry) in north and dry(or wet) in south,wet(or dry) in center and dry(or wet) in the surrounding area,wet(or dry) in northeast and dry(or wet) in the southwest.The first six rotated loading vector fields represent six principal precipitation anomaly areas: Northwest Hubei,North Hubei,Northeast Hubei,Southeast Hubei,Midsouth Hubei,Southwest Hubei.By using the wavelet analysis on the periodicity and the mutation of precipitation during the rainy season in Hu''nan,we found that there were 3-year,7-year and 14-year time scales and main periods of precipitation during the rainy season,and the precipitation during the rainy season in Hubei may will decrease gradually and switch to a dry period in the near future.

相似文章

导出引用
计量
文章访问数: 7
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46