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投稿时间：2006-01-04 修订日期：2006-03-09
投稿时间：2006-01-04 修订日期：2006-03-09
中文摘要: 利用常规地面资料以及T213、自动站资料,对2005年3月10—11日发生在湖北省的一次罕见寒潮过程中两次气温陡降进行了成因和湿位涡诊断分析。分析表明,第一次气温陡降是由于地面强冷空气侵入暖槽,第二次气温陡降主要是高空冷平流下传和地面自西向东发展的降水导致;湿位涡湿斜压项MPV2的时空演变和强冷空气的发展、移动、气温陡降有很好的对应关系。
中文关键词: 强寒潮，冷平流，湿位涡，气温陡降
Abstract:Using routine ground observation data, T213 and automatic observation station data, diagnostic analyses are made on the causes and moist potential vorticity for the twice sudden drop temperature in a rare cold wave event from 10 to 11 march 2005 in Hubei Province. The results show that the strong cold air flowing into a warm trough induced the first temperature sudden drop, but the second was resulted in the upper cold advection passing downward and the surface precipitation band moving from west to east. The spatial-temporal evolvement of mpv2 being the horizontal component of moist potential vorticity(MPV) has a good relationship with the development,moving and the temperature sudden drop in the severe cold air.
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引用文本：
王丽,韦惠红,金琪,谌伟,2006.湖北省一次罕见寒潮天气过程气温陡降分析[J].气象,32(9):71-76.
,2006.Analysis of Temperature Sudden Drop in a Rare Cold Wave Event over Hubei Province[J].Meteor Mon,32(9):71-76.
王丽,韦惠红,金琪,谌伟,2006.湖北省一次罕见寒潮天气过程气温陡降分析[J].气象,32(9):71-76.
,2006.Analysis of Temperature Sudden Drop in a Rare Cold Wave Event over Hubei Province[J].Meteor Mon,32(9):71-76.