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| 近50年河西走廊地区降水均值突变特征分析 | |
| 引用本文： | 王素萍,宋连春,韩永翔,陆登荣.近50年河西走廊地区降水均值突变特征分析[J].高原气象,2011,30(5):1286-1293. |
| 作者姓名： | 王素萍 宋连春 韩永翔 陆登荣 |
| 作者单位： | 1. 中国气象局兰州干旱气象研究所／甘肃省中国气象局干旱气候变化与减灾重点开放实验室,甘肃兰州,730020 2. 中国气象局国家气候中心,北京,100081 3. 南京信息工程大学大气物理学院,江苏南京,210044 4. 甘肃省气象信息与技术装备保障中心,甘肃兰州,730020 |
| 基金项目： | 兰州干旱气象研究所启动基金项目; 干旱气象科学研究基金项目(IAM200822)共同资助 |
| 摘 要： | 利用1960-2009年河西走廊地区16个测站的年和季降水资料,在对该区降水量进行气候分区的基础上,采用墨西哥帽小波函数,对该区域各代表站年和季降水的均值突变特征进行了小波分析,揭示了河西走廊地区降水变化的多时间尺度突变特征。结果表明,河西走廊地区降水量在1968,1973,1982,1991及2005年左右发生了均值... |
| 关 键 词： | 河西走廊地区 降水量 均值突变 |
Analysis on Mean Abrupt Change of Precipitation in Hexi Corridor Region in Recent 50 Years |
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| Affiliation: | WANG Su-ping1,SONG Lian-chun2,HAN Yong-xiang3,LU Deng-rong4(1.Lanzhou Institute of Arid Meteorology,China Meteorological Administration/Key Laboratory of Arid Climate Change andReducing Disaster of Gansu Province &Open Key Laboratory of Arid Climate Change and Reducing Disaster ofChina Meteorological Administration,Lanzhou 730020,China,2.National Climate Center,China Meterological Administration,Beijing 100081,3.Institute of Atmospheric Physics,Nanjing University of Information Engineering,Nanjing 210... |
| Abstract: | Based on the precipitation data at 16 meteorological stations in Hexi corridor from 1960 to 2009,the multi-scale mean abrupt changes of annual and seasonal precipitation at each typical station in recent 50 years had been analyzed based on the Mexican Hat wavelet technique.It was showed that mean abrupt changes of annual precipitation in Hexi corridor were detected in 1968,1973,and around 1982,1991 and 2005.Abrupt changes of precipitation from less to more were detected in 1968 and 1991 in the western corri... |
| Keywords: | Hexi corridor region Precipitation Mean abrupt change |
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