| 青藏铁路沿线气温和降水的小波分析 |
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| 引用本文： | 万明波,程智,王文.青藏铁路沿线气温和降水的小波分析[J].甘肃气象,2006,24(4):35-39. |
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| 作者姓名： | 万明波 程智 王文 |
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| 作者单位： | 兰州大学大气科学学院，兰州大学大气科学学院，兰州大学大气科学学院 甘肃兰州730000，甘肃省干旱气候变化与减灾重点实验室，甘肃兰州730020，甘肃兰州730000，甘肃省干旱气候变化与减灾重点实验室，甘肃兰州730020，甘肃兰州730000，甘肃省干旱气候变化与减灾重点实验室，甘肃兰州730020 |
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| 基金项目： | 中国气象局兰州干旱气象研究所干旱气象科学研究基金项目(IAM200404)资助 |
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| 摘 要： | 利用Morlet小波分析方法,对青藏铁路沿线地区(7站)30 a(1970~1999年)的月平均气温和月平均降水量资料进行了处理和分析。结果表明:青藏铁路沿线的月降水量存在比较明显的9 a左右周期变化,它有2个降雨偏多中心和3个降雨偏少中心,历经30 a的全过程,因而具有长期预测意义。还有其它4 a以下的较短周期振荡,但多不具全局性变化特征。从气温与降水资料的对比分析上看,降水和气温的变化趋势呈正相关。
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| 关 键 词： | 青藏铁路 小波分析 气温 降水变化 |
| 文章编号： | 1006-7639（2006）-04-0035-05 |
| 收稿时间： | 2006-08-09 |
| 修稿时间： | 2006-08-092006-10-30 |
Wavelet Analysis of Temperature and Rainfall Along Qinghai-Xizang Railway |
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| WAN Ming-bo,GHENG Zhi,WANG Wen.Wavelet Analysis of Temperature and Rainfall Along Qinghai-Xizang Railway[J].Gansu Meteorology,2006,24(4):35-39. |
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| Authors: | WAN Ming-bo GHENG Zhi WANG Wen |
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| Institution: | 1. College of Atmospheric Sciences, Lanzhou University, Lanzhou 730000, China; 2. Key Laboratory of Arid Climate Change and Reducing Disaster of Gansu Province, Lanzbou 730020, China |
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| Abstract: | Mean temperature and rainfall were analyzed by Wavelet method from 1970 to 1999 along Qinghai-Xizang railway.The results show that there were a 9-year cycle of monthly averaged rainfall and two wetter centers,three drier centers during the 30 years period,so it may have long-range prediction significance.From comparative analysis between temperature and rainfall data,the trend of them presented a positive correlation in each station along Qinghai-Xizang railway. |
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| Keywords: | Qinghai-Xizang railway wavelet analysis temperature rainfall change |
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