2011年11月常州一次寒潮天气过程分析 |
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引用本文: | 雷正翠,刘银峰,吴建秋,张丽华,吴晶璐,姚丽娜. 2011年11月常州一次寒潮天气过程分析[J]. 安徽农业科学, 2013, 41(1): 206-209,259 |
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作者姓名: | 雷正翠 刘银峰 吴建秋 张丽华 吴晶璐 姚丽娜 |
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作者单位: | 江苏省常州市气象局,江苏常州,213022 |
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摘 要: | 利用NCEP 1°×1°再分析资料和常规观测资料,对2011年11月的一次寒潮天气过程进行了天气动力学诊断分析。结果表明,这次冷空气活动主要有3个特点,即范围较大、降温速度快、降水时间较长;寒潮爆发前回暖往往是寒潮预报的一个重要指标;槽后较强冷空气的不断南下,利于寒潮天气的爆发;500 hPa负涡度带的一次次南下影响,可据此判断冷空气的影响时间和强度。
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关 键 词: | 寒潮 天气过程 常州 |
Analysis on a Cold Wave Weather Process in Changzhou on November, 2011 |
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Affiliation: | LEI Zheng-cui et al(Changzhou Meteorological Bureau,Changzhou,Jiangsu 213022) |
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Abstract: | Using the NCEP 1 ° × 1 ° reanalysis data and conventional observation data, a weather dynamic diagnosis of the cold wave process occurred on November, 2011 was analyzed. The results showed that there are 3 slain features in the cold air activities: large range, tempera- ture dropping quickly, long time precipitation; Temperature rising before the outbreak of cold wave is an important indicator; The strung cold air driving southward after trough is advantageous to the outburst of cold wave ; We can judge the effect time and intensity of cold air according to the negative vorticity band heading south at 500 hPa. |
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Keywords: | Cold wave Weather process Changzhou |
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