[1]张俊利,张钊,于希,等.2014年2月18日湖南暴雪成因分析[J].气象研究与应用,2016,37(01):43-46.
　Zhang Junli,Zhang Zhao,Yu Xi,et al.Analysis of Blizzard in Hunan Province on 18February, 2014[J].Journal of Meteorological Research and Application,2016,37(01):43-46.
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2014年2月18日湖南暴雪成因分析()
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气象研究与应用[ISSN:1673-8411/CN:45-1356/P]

卷:
第37卷
期数:
2016年01期
页码:
43-46
栏目:
天气气候
出版日期:
2016-12-20

文章信息/Info

Title:
Analysis of Blizzard in Hunan Province on 18February, 2014
作者:
张俊利1;  张钊1;  于希1;  钟伟业2;  刘冬梅2
1. 湖南省邵阳市气象局, 湖南邵阳 422000;
2. 湖南省邵东县气象局, 湖南邵东 422800
Author(s):
Zhang Junli1;  Zhang Zhao1;  Yu Xi1;  Zhong Weiye2;  Liu Dongmei2
1. Shaoyang Municipal Meteorological Service, Shaoyang 422000;
2. Shaodong County Meteorological Service, Shaodong 422800
关键词:
切变线; 西南急流; 零度层亮带
Keywords:
shear line; southwest jet; 0℃ level bright band
分类号:
P458
摘要:
利用NCEP再分析资料、MICAPS资料、多普勒雷达资料对发生2014年2月18日在湘中及以南一次暴雪天气过程进行诊断分析,结果表明:(1)此次过程的主要影响天气系统为500hPa为高空槽、700hPa切变线及西南急流、850hPa切变线。(2)暴雪发生时,湿层厚度升高,且整层温度均<0℃,0℃层高度下降到1000hPa附近。(3)从动力条件分析表明,强降雪发生时有强烈的上升运动,低层辐合与高层辐散特征,同时暴雪发生前西南急流为暴雪的发生提供了有利的水汽条件。(4)强降雪期间,雷达回波上有清楚的零度层亮带特征。
Abstract:
Based on NCEP reanalysis data, MICAPS data and Doppler radar observations, the snowstorm process occurred in middle and south of Hunan province on 18th February, 2014 were analyzed. The results show that:(1) the main affecting system of this process is formed by 500hPa upper trough, 700hPa shear line and southwest jet, 850hPa shear line; (2) when the snowstorm occurred, the height of humidity level lifted with the temperature of all the level below 0℃, and the height of 0℃ level drop down to around 1000hPa. (3) According to the analysis of the dynamic condition, the results show that there was strong ascending motion when the snowstorm occurred; meanwhile, the southwest jet supplied vapour for snowstorm before it begins. (4) During snowing, the radar echo displayed the obvious 0℃ level-bright-band feature.

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备注/Memo

备注/Memo:
收稿日期:2015-10-15。
基金项目:湖南省气象局预报员专项(XQKJ16C008)支持
作者简介:张俊利(1982-),女,工程师,主要从事中短期天气预报研究工作。
更新日期/Last Update: 1900-01-01