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中国沙漠  1995, Vol. 15 Issue (1): 19-30    
论文     
我国西北地区黑风暴的成因和对策
王式功1, 杨德保1, 金炯2, 徐启运3, 杨瑜峰3
1. 兰州大学大气科学系, 兰州 730000;
2. 中国科学院兰州沙漠研究所, 兰州 730000;
3. 甘肃省气象局, 兰州 730020
STUDY ON THE FORMATIVE CAUSES AND COUNTERMEASURES OF THE CATASTROPHIC SANDSTORM OCCURRED IN NORTHWEST CHINA
Wang Shigong1, Yang Debao1, Jing Jiong2, Xu Qiyun3, Yang Yufeng3
1. Department of Atmmmospheric Science, Lanzhou University, Lanzhou, 730000;
2. Institute of Desert Research, Academia Sinica, Lanzhou, 730000;
3. Gansu Meteorological Service, Lanzhou, 730000
 全文: PDF(838 KB)  
摘要: 通过对我国北方地区气候资料分析, 揭示了沙尘暴的时、空分布特征, 并指出西北地区春季4、5月份常发生黑风暴天气的宏观气候背景和下垫面条件。同时以1993年5月5日发生的黑风暴天气过程为例, 探讨了造成西北地区大范围黑风暴天气的大尺度环流形势, 主要天气系统和中尺度系统。有针对性地提出预报着眼点和防灾、减灾对策。
关键词: 西北地区黑风暴成因与对策    
Abstract: By analysing the thirty-year(1951-1980)climatological data and the catastrophic sandstorm case which happened in Northwest China on 5 may 1993.the analytical results were concluded as follows:(1) In North China,sandstorm occurred more frequently in the Northwest than in the Northeast.There were two areas (the east of Gansu Hexi Orridor and the southwest of the Taklimakan Desert)where sandstorm happened more frequently than any other areas.The frequency of the sandstorm occurring in April was the highest in the whole year.The frequency of the sandstorm happenning in spring was nearly a half of that in the whole year.(2)There are three causes which lead to sandstorm mainly happenning in Northwest China in spring season. First, weather is arid and the soil is porous.second, the position of subtropical jet stream is advantageous to frequently forming strong wind. Finally,the convective activity resulting from the unstability of the atmosphere is beneficial to the drop-transmission of the momentum from the jet stream.(3)The large-range sandstorm and local catastrophic sandstorm occurring on 5 May 1993 were due to the passages of the strong cold front.The low-pressure system in the northeast of the Qinghai-Xizang Plateau,the low-level easterly jet over Gansu Hexi Orridor and meso-scale squall line also played an important role in forming the catastrophic sandstorm. (4)The main emergency countermeasures are to take prevention as the dominant factor,that is,the local meteorological observatory must provide timely and accurate weather prediction about catastrophic sand storm for the local government departments and the masses. The monitoring and warning system of the catastrophic sandstorm must be established or perfected as soon as possible.
Key words: Northwest China    Catastrophic sandstorm    Formative causes and countermeasures
收稿日期: 1994-06-02
基金资助: 国家自然科学基金资助项目(49475268)
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引用本文:

王式功, 杨德保, 金炯, 徐启运, 杨瑜峰. 我国西北地区黑风暴的成因和对策[J]. 中国沙漠, 1995, 15(1): 19-30.

Wang Shigong, Yang Debao, Jing Jiong, Xu Qiyun, Yang Yufeng. STUDY ON THE FORMATIVE CAUSES AND COUNTERMEASURES OF THE CATASTROPHIC SANDSTORM OCCURRED IN NORTHWEST CHINA. JOURNAL OF DESERT RESEARCH, 1995, 15(1): 19-30.

链接本文:

http://119.78.100.150:82/zgsm/CN/        http://119.78.100.150:82/zgsm/CN/Y1995/V15/I1/19

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