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投稿时间：2008-02-04 修订日期：2008-10-09
投稿时间：2008-02-04 修订日期：2008-10-09
中文摘要: 2006年7月5日和2006年6月16日是两次冷涡位置相似，造成的天气不尽相同的东北冷涡天气
过程。利用常规气象资料、卫星云图、自动站资料、NCEP再分析资料(水平分辨率1°×1°,
一天4次)，对两次天气过程的大尺度环流场、云图演变、能量场、动力场进行了对比分析。
结果表明：同在东北冷涡天气背景下，由于中低层温度场配置不同、上下游系统强弱不同，
导致天气不同；东北冷涡云带尾部的云团以“前消后长”的传播形式向前传播；强对流天气
与θse高能区的密集带、SI指数场的负值区、地面中尺度辐合线的偏南气流、水
汽能量的大值区及CAPE的高值区有较好的对应关系。
Abstract:The two cold vortex processes occurred on July 5, 2006 and June 16, 2006 are inv
estigated. The positions of the two cold vortices are similar, but weather pheno
mena are different. With the conventional meteorological data, satellite images,
automatic weather station(AWS) data and NCEP reanalysis data (horizontal resolu
tion 1°×1°), two processes are analyzed in aspects of large scale circulatio
n, the evolution of the satellite image, the energetic and dynamical field. The
results show that (1) in the two cases, the T distribution at the low and middle
level, the strength of systems in the upstream and downstream area is differen
t. (2)The cloud cluster located the end of cold vortex band propagates forward.
(3) The strong convective storms have a good relationship with the region of hig
h θse gradient value, SI<0, high value of CAPE, as well as SW flow lo
cated south of surface convergent line.
文章编号： 中图分类号： 文献标志码：
基金项目:
| Author Name | Affiliation |
| Li Yunchuan | Hebei Weather Modification Office, Shijiazhuang 050021 |
| Zhang Yingxin | Hebei Meteorological Observatory |
| Cui Fene | Qinhuangdao meteorological Office, Hebei Province |
引用文本：
李云川,张迎新,崔粉娥,2008.两次东北冷涡天气异同的成因分析[J].气象,34(12):54-62.
Li Yunchuan,Zhang Yingxin,Cui Fene,2008.A Composite Diagnostic Study of the Weather Differences Caused by Northeast Cold Vortex [J].Meteor Mon,34(12):54-62.
李云川,张迎新,崔粉娥,2008.两次东北冷涡天气异同的成因分析[J].气象,34(12):54-62.
Li Yunchuan,Zhang Yingxin,Cui Fene,2008.A Composite Diagnostic Study of the Weather Differences Caused by Northeast Cold Vortex [J].Meteor Mon,34(12):54-62.