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地球科学进展  2011, Vol. 26 Issue (6): 624-630    DOI: 10.11867/j.issn.1001-8166.2011.06.0624
研究论文     
我国北方沙尘暴年代际变化与北大西洋海气系统年代际变率的联系
李耀辉,孙国武,张良,段海霞
中国气象局兰州干旱气象研究所,甘肃省(中国气象局)干旱气候变化与减灾重点(开放)实验室, 甘肃兰州730020
The Relationship between Decadal Variation of Sand-Dust Storm in North China and Decadal Variability of North Atlantic AirSea System
Li Yaohui, Sun Guowu, Zhang Liang, Duan Haixia
Institute of Arid Meteorology, China Meteorological Administration; Key (Open) Laboratory of Arid Climatic Change and Reducing Disaster of Gansu Province (China Meteorological Administration), Lanzhou730020, China
 全文: PDF(24584 KB)  
摘要:

分析了近50年我国北方沙尘暴的年代际变化和热盐环流(THC)的年代际变率的演变特征,发现沙尘暴与THC存在一定的联系。这种相互联系的演变过程大致是:THC与北大西洋涛动(NAO)有联系,NAO与西伯利亚冷高压有联系,而西伯利亚高压又影响北半球冷空气活动,最终影响我国北方沙尘暴的发生。结果表明,THC强(弱)→NAO弱(强)→西伯利亚高压强(弱)→地面偏北风强(弱)→沙尘暴偏多(少)。而且,在20世纪70年代末到80年代初,均存在一个明显的转折变化,即THC、西伯利亚高压和地面北风从强到弱,NAO从弱到强,沙尘暴则出现由偏多到偏少的变化趋势。

关键词: 温盐环流北方沙尘暴联系演变过程    
Abstract:

 In this paper, the characteristics between the decadal variation of sand-storm in north China and decadal variability of thermohaline circulation (THC) in recent 50 years are analyzed. It is found that there are some relationships between the sand-dust storm and THC. Further analyses indicate the primary process of this following relationship:  THC influences on NAO, NAO on Siberia high, Siberia high on cold air activities, and then, on the sanddust storm. The results show that when THC is strong (weak), NAO is weak (strong), Siberia and north winds  in surface are strong (weak), sanddust storms are more (less). Moreover, a remarkable variation from the end of the 1970’s to the beginning of 1980’s is also found that THC, Siberia high and north wind changed from strong to weak, NAO from weak to strong and sanddust storm in north China obviously decreased.

Key words: Thermohaline circulation    Sand-dust storm in North China    Relationship    Evolution process
收稿日期: 2010-06-04 出版日期: 2011-06-10
:  P445+.4  
基金资助:

国家科技支撑计划重点项目“沙尘暴遥感监测与预报集成技术研究”课题“省级沙尘暴遥感监测预警评估与服务应用示范”(编号:2008BAC40B04);公益性行业(气象)科研专项项目“多时间尺度干旱监测与预警评估技术研究”(编号:GYHY201006023)资助.

通讯作者: 李耀辉     E-mail: li-yaohui@163.com
作者简介: 李耀辉(1967-),男,甘肃徽县人,研究员,主要从事干旱气象与环境研究. E-mail:li-yaohui@163.com
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引用本文:

李耀辉,孙国武,张良,段海霞. 我国北方沙尘暴年代际变化与北大西洋海气系统年代际变率的联系[J]. 地球科学进展, 2011, 26(6): 624-630.

Li Yaohui, Sun Guowu, Zhang Liang, Duan Haixia. The Relationship between Decadal Variation of Sand-Dust Storm in North China and Decadal Variability of North Atlantic AirSea System. Advances in Earth Science, 2011, 26(6): 624-630.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2011.06.0624        http://www.adearth.ac.cn/CN/Y2011/V26/I6/624

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