| 1961-2009年宁夏大到暴雪气候特征和变化规律 |
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| 引用本文： | 丁永红,冯建民,赵蔚,郑广芬,纳丽.1961-2009年宁夏大到暴雪气候特征和变化规律[J].冰川冻土,2011,33(6):1399-1406. |
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| 作者姓名： | 丁永红 冯建民 赵蔚 郑广芬 纳丽 |
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| 作者单位： | 宁夏气象防灾减灾重点实验室,宁夏银川750002／宁夏气象台,宁夏银川750002 |
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| 基金项目： | 宁夏自然科学基金“宁夏大到暴雪对气候变化的响应及其机理研究(NZ10213)”;宁夏科技攻关项目“宁夏极端气候事件及气象灾害的变化研究”(KGX-12-09-02)资助 |
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| 摘 要： | 选取宁夏20个气象观测站的天气现象和降水量观测资料,运用合成、Le Page检测、Mexihat小波变换和最大熵谱法,分析了宁夏大到暴雪发生次数的气候特征和年际、年代际的变化规律及其突变和周期.结果表明：宁夏大到暴雪多发生在春季和秋季,南多北少地域特征明显,15mm以下大到暴雪出现频次高,年际、年代际的变化特征明显,连...
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| 关 键 词： | 宁夏 大到暴雪 气候特征 变化规律 |
Characteristics and Variation of Heavy Snow in Ningxia Region in 1961-2009 |
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| DING Yong-hong,FENG Jian-min,ZHAO Wei,ZHENG Guang-fen,NA Li.Characteristics and Variation of Heavy Snow in Ningxia Region in 1961-2009[J].Journal of Glaciology and Geocryology,2011,33(6):1399-1406. |
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| Authors: | DING Yong-hong FENG Jian-min ZHAO Wei ZHENG Guang-fen NA Li |
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| Institution: | 1,3 (1.Ningxia Key Laboratory of Preventing and Reducing Meteorological Disaster,Yinchuan Ningxia 750002,China; 2.Ningxia Meteorological observatory,Yinchuan Ningxia 750002,China; 3.Ningxia Climate Center,Yinchuan Ningxia 750002,China; 4.Ningxia Meteorological Service Center,Yinchuan Ningxia 750002,China) |
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| Abstract: | Selecting the weather phenomenon and precipitation recorded in 20 stations in Ningxia Region and using the methods of composition,Le page test,Mexihat wavelet transform and maximum entropy spectrum,an analysis of climate characteristics,annual and decade variations,abrupt change and period of heavy snow frequency in Ningxia Region was conducted.The result shows that most heavy snow occurs in spring and autumn.It is obvious that the frequency of heavy snow in southern Ningxia Region is more than that in northern Ningxia Region.The heavy snow in Ningxia Region with the precipitation less than 15 mm has high frequency,together with visible features of annual and decade variations,longer duration of continuous little heavy snow years,abrupt change in the frequent occurring phase and multiple time scale cycles. |
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| Keywords: | Ningxia Region heavy snow climate characteristics variation |
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