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| 西北地区1次罕见的冬季寒潮天气分析 | |
| 引用本文： | 程鹏,吉惠敏,刘琴,刘抗,孟丽霞.西北地区1次罕见的冬季寒潮天气分析[J].安徽农业科学,2009,37(36):18033-18036. |
| 作者姓名： | 程鹏 吉惠敏 刘琴 刘抗 孟丽霞 |
| 作者单位： | 1. 兰州大学大气科学学院,甘肃兰州,730000;兰州中心气象台,甘肃兰州,730020 2. 兰州中心气象台,甘肃兰州,730020 3. 兰州大学资源环境学院,甘肃兰州,730020 |
| 摘 要： | 对2008年12月2～5日,西北地区的甘肃、青海、宁夏、陕西4省区出现的1次冬季寒潮爆发的成因和物理量特征进行了综合分析。结果表明,这次寒潮过程属于＂横糟转竖型＂;乌山脊崩溃、横槽的转竖、地面冷高压的加强南下是引发寒潮爆发的原因;乌山脊的建立和崩溃、横槽的转竖是预报寒潮天气爆发的关键;散度、垂直速度、温度平流等物理量是寒潮天气预报中非常好的参考依据。 |
| 关 键 词： | 寒潮 物理量特征 横槽转竖 西北地区 |
Analysis on A Rare Winter Cold Wave in Northwest Area |
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| CHENG Peng et al.Analysis on A Rare Winter Cold Wave in Northwest Area[J].Journal of Anhui Agricultural Sciences,2009,37(36):18033-18036. | |
| Authors: | CHENG Peng |
| Institution: | CHENG Peng et al(College of Atmospheric Sciences,Lanzhou University,Lanzhou,Gansu 730000) |
| Abstract: | The causes and physical characteristics of the cold wave occurred in Northwest of Gansu,Qinghai,Ningxia,Shaanxi Provinces were analyzed comprehensively.The results showed that the type of the weather belonged totransversal trough changed to the vertical;the collapse of the ridge in the Ural Mountains,transversal trough changed to the vertical and the enhance of the cold high pressure of floor caused the outbreak of the cold wave;the keys to forecast the cold wave were the forming and collapse of the ridge i... |
| Keywords: | Cold wave Physical characteristics Transversal trough changed to the vertical Northwest area |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |