| 重庆市近50a来高温变化多时间尺度分析 |
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| 引用本文： | 李永华,刘德,向波.重庆市近50a来高温变化多时间尺度分析[J].气象科学,2003,23(3):325-331. |
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| 作者姓名： | 李永华 刘德 向波 |
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| 作者单位： | 重庆市气象台,重庆,400039 |
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| 基金项目： | 重庆市科技攻关项目“重庆市气候异常基本规律及形成原因研究”资助 |
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| 摘 要： | 利用重庆市极端最高气温及高温日数资料，采用MHF(墨西哥帽函数)小波等方法分析重庆市近50a来高温的时间——频率的多层次时间尺度变化特征。结果表明，重庆市高温变化具有明显的阶段性；重庆市极端最高气温变化以6a周期振动最强，而高温日数变化则以14～15a周期振动最强。
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| 关 键 词： | MHF小波 多时间尺度 高温 变化特征 |
| 收稿时间： | 8/1/2002 12:00:00 AM |
| 修稿时间： | 2002年8月1日 |
THE WAVELET ANALYSIS OF VARIATIONS OF MAXIMUM TEMPERATURE AND HIGH-TEMPERATURE DAYS IN CHONGQING |
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| Li Yonghu,Liu De and Xiang Bo.THE WAVELET ANALYSIS OF VARIATIONS OF MAXIMUM TEMPERATURE AND HIGH-TEMPERATURE DAYS IN CHONGQING[J].Scientia Meteorologica Sinica,2003,23(3):325-331. |
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| Authors: | Li Yonghu Liu De and Xiang Bo |
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| Institution: | Meteorological Observatory of Chongqing,Chongqing 400039;Meteorological Observatory of Chongqing,Chongqing 400039;Meteorological Observatory of Chongqing,Chongqing 400039 |
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| Abstract: | In this article the variations of maximum temperature and high-temperature days during the past 50 years in Chongqing were analyzed by use of MHF wavlet analysis.Some multi-scale and jump features of variations were discovered .Results show that the variations of maximum temperature and high-temperature days in Chongqing contain obviously staggered features.Six-year period-oscillation of maximum temperature variations is the strongest and fourteen-year period-oscillation of high-temperature days variations is the strongest,respectively. |
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| Keywords: | MHF wavelet Multi time scale High temperature Variation features |
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