| 宁夏初冬一次大暴雪天气过程成因分析 |
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| 引用本文： | 贾宏元,赵光平,沈跃琴,纪晓玲.宁夏初冬一次大暴雪天气过程成因分析[J].新疆气象,2007,1(4):17-21. |
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| 作者姓名： | 贾宏元 赵光平 沈跃琴 纪晓玲 |
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| 作者单位： | 宁夏气象防灾减灾重点实验室，宁夏气象台，宁夏气象台，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，宁夏银川750002，中国气象局兰州干旱气象研究所，甘肃兰州730020，宁夏银川750002，宁夏银川750002，宁夏气象台，宁夏银川750002 |
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| 摘 要： | 在分析了大气环流及其诸层物理量场特征基础上,结合逐时卫星云图资料对2002年10月17日～18日宁夏固原一次大暴雪天气过程成因进行了探讨,发现此次暴雪中低层存在着较明显的三股气流的共同作用,指出低涡及暖式切变线是本次过程重要的天气影响系统,降水水汽主要来自于低层输入,同时分析还表明宁夏冬半年的强降水也具有的中小尺度特征。
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| 关 键 词： | 暴雪 成因 宁夏 |
| 文章编号： | 1002-0799（2007）04-0017-05 |
| 收稿时间： | 2007-05-30 |
| 修稿时间： | 2007年5月30日 |
Analysis on Causes of a Heavy Snowstorm at the Southern Ningxia in Early Winter |
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| JIA Hong-yuan,ZHAO Guang-ping,SHEN Yue-qin,JI xiao-ling.Analysis on Causes of a Heavy Snowstorm at the Southern Ningxia in Early Winter[J].Bimonthly of Xinjiang Meteorology,2007,1(4):17-21. |
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| Authors: | JIA Hong-yuan ZHAO Guang-ping SHEN Yue-qin JI xiao-ling |
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| Institution: | Ningxia Key Laboratory for Meteorological Disaster Prevention and Ningxia, China;2. Ningxia Meteorological Observatory ,Yinchuan 3. Institute of drought meteorology of Lanzhou, CMA, Lanzhou Reduction, Yinchuan 750002, 750002, Ningxia, China; 730020, Gansu, China |
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| Abstract: | Based on analysis of characteristics of atmospheric circulation and physical parameter field on each layer,and analysis of hourly digital satellite image data,a heavy snowstorm process that occurred in Ningxia Guyuan during 17-18 October in 2002 was studied.Results show that three air currents on middle and low layers play an important role in this process,the low vortex and the warm shear line are key influencing systems,and the vapour transport comes from the low layer primarily.The study also revealed the fact that meso-microscale system is active in winter heavy precipitation in Ningxia. |
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| Keywords: | heavy snowstorm cause of formation Ningxia |
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