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气象:2011,37(2):156-160
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2008年初冻雨强度变化以及与逆温层特征之间的关系
(国家气象中心, 北京 100081)
The Relationship Between the Strength Variability of Freezing Rain and the Character of Inversion in the Beginning of 2008
(National Meteorological Center, Beijing 100081)
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投稿时间:2010-04-07    修订日期:2010-06-09
中文摘要: 利用NECP/NCAR 2008年1月10日至2月2日的再分析资料和常规地面观测资料分析了造成我国南方低温雨雪冰冻灾害的4次主要冻雨过程的强度变化特征以及在此期间逆温层的时空分布特征,并讨论了两者之间的联系。结果表明,四次冻雨过程第三次最强、第二次过程次之,第一次最弱。同时,无论从区域平均还是从水平分布上看,逆温层强度与冻雨强度变化之间存在明显联系。此外,冷、暖层以及整体逆温层的厚度、高度等虽对冻雨的形成有作用,但对冻雨强度强度的影响却不明显。这些结论对日常业务中预报冻雨强度变化提供了一种好的思路,具有明显的预报参考价值。
Abstract:Using the NCEP/NCAR reanalysis data and observation data (8 times daily) from the Central Meteorological Observatory from January 10 to February 2, 2008, we analyzed the characters of spatial temporal structure about temperature inversion layers, the variability of intensity of the four freezing rain processes happening in southern China and the relationship between them. The results show that the third out of the four main freezing rain processes is the strongest, then is followed by the second, and the first is the weakest process. Meanwhile, there is a close relationship between the strength variability of freezing rain and reversion layers, which could be revealed either from the regional average value or from the horizontal distribution. Furthermore, the thicknesses and altitudes of the cold layer, the warm layer and the whole inversion layer are able to affect the formation of the freezing rain, but the influence on the strength of the freezing rain is not significant. The results provide a good idea for forecasting the variability of the freezing rain, which is of reference value.
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基金项目:行业专项GYHY200906001、GYHY201006010,国家科技支撑项目2009BAC51B03和中国气象局预报员专项“冬季逆温层的产生及其对冻雨形成的影响”共同资助
引用文本:
宗志平,马杰,2011.2008年初冻雨强度变化以及与逆温层特征之间的关系[J].气象,37(2):156-160.
ZONG Zhiping,MA Jie,2011.The Relationship Between the Strength Variability of Freezing Rain and the Character of Inversion in the Beginning of 2008[J].Meteor Mon,37(2):156-160.