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| 近40 a西昌卫星发射中心雨季降水周期及突变特征分析 | |
| 引用本文： | 李刚,江晓华,杨查,白涛. 近40 a西昌卫星发射中心雨季降水周期及突变特征分析[J]. 西昌学院学报(自然科学版), 2017, 31(2): 60-63 |
| 作者姓名： | 李刚 江晓华 杨查 白涛 |
| 作者单位： | 1. 西昌卫星发射中心气象室，四川西昌615000；2. 94188部队气象中心，西安710077） |
| 基金项目： | 国家重点基础研究发展规划项目（2013CB956203）；国家自然科学基金项目（41475070; 41490642; 41575097）。 |
| 摘 要： | 采用西昌卫星发射中心单站的月平均降水资料、Morlet小波分析和Mann-Kendall方法分析了西昌发射场区1974—2013年的降水周期及突变特征。结果表明:降水量在雨季、8和9月呈现出显著的9~16的年代际周期,但其年际周期偏弱。此外,雨季、6和7月存在突变现象,但8和9月并不存在突变现象。 |
| 关 键 词： | 关键词：西昌卫星发射中心；雨季；降水周期；降水突变目标；气候变化 |
Wavelet and Abrupt Analysis of Rainfall Variability for Rain Season during1974-2013 of Xichang Satellite Launch Center |
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| LI Gang,JIANG Xiao-hu,YANG Ch,BAI Tao. Wavelet and Abrupt Analysis of Rainfall Variability for Rain Season during1974-2013 of Xichang Satellite Launch Center[J]. Journal of Xichang College, 2017, 31(2): 60-63 | |
| Authors: | LI Gang JIANG Xiao-hu YANG Ch BAI Tao |
| Affiliation: | 1.Xichang Satellite Launch Center, Xichang, Sichuan 615000, China;2. No. 94188 Troops of PLA, Xi''an 710077, China |
| Abstract: | Characteristic of rainfall variability over Xichang Satellite Launch Center is analyzed based on monthlymean rainfall data from a single station during 1974-2013 using the Morlet wavelet analysis and Mann-Kendallanalysis. The results reveal that rainfall in rainy season, August and September, shows significant periodicities of9-16, while the interannual periodicities is weak. Besides, rainfall in rainy season, June and July, shows significantclimate abrupt, while there is no climate abrupt in August and September. |
| Keywords: | Xichang Satellite Launch Center rainy season precipitation cycle sudden change of precipita-tion climate variability |
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