1955-2011年兰州沙尘暴、浮尘天气事件发生概率的Markov模型研究

doi:10.7522/j.issn.1000-0240.2013.0043

冰川冻土 ›› 2013, Vol. 35 ›› Issue (2): 364-368.doi: 10.7522/j.issn.1000-0240.2013.0043

1955-2011年兰州沙尘暴、浮尘天气事件发生概率的Markov模型研究

蔡忠兰¹, 孙宏义², 董海涛², 隆霄³

1. 甘肃省气象服务中心, 甘肃兰州 730000;
2. 中国科学院寒区旱区环境与工程研究所, 甘肃兰州 730000;
3. 兰州大学大气科学学院, 甘肃兰州 730000

收稿日期:2012-09-10 修回日期:2012-12-12 出版日期:2013-04-25 发布日期:2013-05-14
通讯作者: 孙宏义,E-mail:sunhy569@lzb.ac.cn E-mail:sunhy569@lzb.ac.cn
作者简介:蔡忠兰(1964-), 女, 甘肃武威人, 工程师, 1983年毕业于兰州环境资源学院, 现主要从事气象地面资料审核工作.
基金资助:
国家自然科学基金项目(40975060); 中国科学院院地合作项目"雨养地区陡削坡面植被恢复技术"; 中国科学院重大装备研制项目"植物固沙机研制"资助

The Probability of Occurrence of Dust Storm and Dust-Floating Weather Events based on the Markov Model in Lanzhou Region during 1955-2011

CAI Zhong-lan¹, SUN Hong-yi², DONG Hai-tao², LONG Xiao³

1. The Center of Gansu Meteorological Service, Lanzhou Gansu 730020, China;
2. Cold and Arid RegionsEnvironmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou Gansu 730000, China;
3. College of Atmospheric Sciences, Lanzhou University, Lanzhou Gansu 730000, China

Received:2012-09-10 Revised:2012-12-12 Online:2013-04-25 Published:2013-05-14

摘要/Abstract

摘要：

依据甘肃兰州市1955-2010年沙尘暴、浮尘天气事件年变化资料, 划分年强度分级, 应用Markov模型对其不同强度发生概率进行分析, 在此基础上预测和检验了2011年兰州沙尘暴浮尘天气事件的发生概率.结果显示: 2011年沙尘暴发生的特强年、强烈年、强发生年、一般发生年和少发年的概率为,而事实上2011年发生沙尘暴0次,属于少发年, 符合预测结果; 2011年浮尘天气发生的特强年、强烈年、强发生年、一般发生年和少发年的概率为,而事实上2011年发生浮尘9次,介于平常年和少发年范围, 符合预测结果.随着时间序列的延长, Markov模型可成为短期沙尘暴浮尘天气变化预测的有效途径.

关键词: 兰州, 气候变化, Markov模型, 沙尘暴、浮尘天气事件

Abstract:

Based on thedata of dust storms and dust-floating weather events in the Lanzhou City, Gansu Province during 1955-2010, we build the classificationof the intensity of dust storms and dust-floating weather events, we employed the Markov model to studied the probability of occurrence of different intensity of dust storms and dust-floating weather events, and forecast and testing the probability of occurrence of the weather events in2011 in Lanzhou. The results show: the probability of occurrence of dust storm with very strong years, strong years, less strong years, general years, loweryears were [0.022, 0.00, 0.044, 0.044, 0.888]. in2011 in Lanzhou. In fact, Lanzhou dust storm event is not happen in 2011, to belong loweryears, the forecast result has confirmed.For dust-floating weather eventin 2011,the probability of occurrence of dust-floating weather events with very strong years, strong years, less strong years, general years, lower years were [0.20, 0.1, 0.00, 0.30, 0.40], and in fact the 2011, there are9 dust-floating weather events, to belong intensity of between general years and loweryears less, in line with the predicted results.With extension of the dataseries, Markov model willbe an effective way of short-term sandstorm dust weather forecast.

Key words: Lanzhou, climate change, Markov model, dust stormsanddust-floating weather events

中图分类号:

P445.4

蔡忠兰, 孙宏义, 董海涛, 隆霄. 1955-2011年兰州沙尘暴、浮尘天气事件发生概率的Markov模型研究[J]. 冰川冻土, 2013, 35(2): 364-368.

CAI Zhong-lan, SUN Hong-yi, DONG Hai-tao, LONG Xiao. The Probability of Occurrence of Dust Storm and Dust-Floating Weather Events based on the Markov Model in Lanzhou Region during 1955-2011[J]. JOURNAL OF GLACIOLOGY AND GEOCRYOLOGY, 2013, 35(2): 364-368.

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1955-2011年兰州沙尘暴、浮尘天气事件发生概率的Markov模型研究

The Probability of Occurrence of Dust Storm and Dust-Floating Weather Events based on the Markov Model in Lanzhou Region during 1955-2011

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