| 西畴县近48年来降水及气温小波分析 |
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| 引用本文： | 刘云生,黄国平,王顺江.西畴县近48年来降水及气温小波分析[J].云南地理环境研究,2011,23(2):90-92. |
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| 作者姓名： | 刘云生 黄国平 王顺江 |
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| 作者单位： | 1. 西畴县气象局,云南,西畴,663500
2. 文山州气象局,云南,文山,663300 |
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| 摘 要： | 利用连续小波分析1962～2009年西畴县年降水量和年平均气温序列的小波变化特征,揭示了西畴县降水量与平均气温存在多时间尺度的周期变化特征。其中降水有2个明显的特征时间尺度,分别是4年和8年,平均气温存在以准2～4年为周期的周期振荡。此外,也可以看出近48年来,平均气温存在明显升高的趋势,降水也有减少的趋势,为掌握西畴县的气候变化规律及今后的气象预报服务工作提供了一定的参考价值。
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| 关 键 词： | 西畴 年平均气温 年降水量 连续小波分析 变化趋势 周期变化 |
WAVELET ANALYSIS OF RAINFALL AND TEMPERATURE OF XICHOU IN RECENT 48YEARS |
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| LIU Yun-sheng,HUANG Guo-ping,WANG Shun-jiang.WAVELET ANALYSIS OF RAINFALL AND TEMPERATURE OF XICHOU IN RECENT 48YEARS[J].Yunnan Geographic Environment Research,2011,23(2):90-92. |
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| Authors: | LIU Yun-sheng HUANG Guo-ping WANG Shun-jiang |
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| Institution: | LIU Yun-sheng1,HUANG Guo-ping1,WANG Shun-jiang2(1.Xichou Meteorological Bureau,Xichou 663500,Yunnan,China,2.Wenshan Meteorological Bureau,Wenshan 663000,China) |
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| Abstract: | Based on time series of annual average temperature and precipitation of Xichou County,Yunnan from 1954 to 2001,changes in multi-time scale and jump characteristics of temperature and precipitation time series have probed with Morlet wavelet transform.Where precipitation has two distinct characteristic time scales,respectively,4a and 8a.However,the average tmeperature shows that there exist quasi 4a oscillations.In addition,the we can easily find that the annual average temperature had an increasing trend an... |
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| Keywords: | Xichou County annual average temperature annual average precipitation continuous wavelet variation trend the period changes |
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