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中文摘要: 通过对齐齐哈尔市近百年来气温变化的多时间尺度结构和局部化特征的分析,得出齐齐哈尔市的气温不仅存在准2a、4a、4~6a和8a左右的年际尺度的周期性变化,也存在40~60a的年代际尺度的周期性变化;而且具有明显的突变特征,40~60a尺度的冷暖交替分别出现在1924、1955和1989年。
中文关键词: 气温变化,时间尺度,突变
Abstract:The multi-time scale structure and localization characters of Qiqihar's temperature variation are analyzed by Morlet wavelet transformation. The results show that there are not only quasi-biennial,4-year,4-6-year and 8-year annual scale periodic change and 40-60-year decades scale periodic change,but also marked abrupt change characters in Qiqihar's temperature variation. The 40-60-year scale periodic alteration of coldness and hotness occurs in 1924,1955 and 1989.
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基金项目:南京气象学院科研基金项目9922
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引用文本:
娄德君,孙卫国,李治民,2004.近百年齐齐哈尔市的气温变化[J].气象,30(12):65-67.
,2004.Temperature Variations of Qiqihar City for Last 100 Years[J].Meteor Mon,30(12):65-67.
娄德君,孙卫国,李治民,2004.近百年齐齐哈尔市的气温变化[J].气象,30(12):65-67.
,2004.Temperature Variations of Qiqihar City for Last 100 Years[J].Meteor Mon,30(12):65-67.