[1]叶庚姣,郑凤琴,钟利华.一次北部湾海雾天气过程的大气边界层特征分析[J].气象研究与应用,2019,40(02):21-24,41.
　Ye Gengjiao,Zheng Fengqin,Zhong Lihua.Characteristic Analysis of Atmospheric Boundary Layer for a Sea Fog Weather Process in Beibu Gulf[J].Journal of Meteorological Research and Application,2019,40(02):21-24,41.
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一次北部湾海雾天气过程的大气边界层特征分析()
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气象研究与应用[ISSN:1673-8411/CN:45-1356/P]

卷:
第40卷
期数:
2019年02期
页码:
21-24,41
栏目:
天气气候
出版日期:
2019-06-30

文章信息/Info

Title:
Characteristic Analysis of Atmospheric Boundary Layer for a Sea Fog Weather Process in Beibu Gulf
作者:
叶庚姣;  郑凤琴;  钟利华
广西壮族自治区气象服务中心, 南宁 530022
Author(s):
Ye Gengjiao;  Zheng Fengqin;  Zhong Lihua
Guangxi Meteorological Service Center, Nanning 530022
关键词:
北部湾; 海雾; 大气边界层; 特征分析
Keywords:
Beibu gulf; sea fog; atmospheric boundary layer; characteristic analysis
分类号:
P44
摘要:
利用常规地面和高空气象观测资料、风廓线雷达和NCEP/NCAR再分析资料，分析了2016年2月11~13日导致北海-涠洲岛航线停航的典型平流型海雾天气过程的环流形势、边界层特征。结果表明：此次海雾天气过程，近地面层风速较小约3~5 m·s-1，为东南风；850hPa附近，有12~15 m·s-1的西南风急流；500m以下，具有一定的垂直风切变，水平风切变越小，海雾天气越严重。海雾期间的大气层结为中性状态，混合层厚度低于500m，且混合层厚度越低，能见度也越低，海雾天气越严重。此外，925hPa附近存在逆温层、地面的相对湿度较大（约95%）和温度露点差较小（1~2℃）均是该次海雾天气的明显特征。以上这些大气边界层特征可作为北部湾平流型海雾天气预报的参考依据。
Abstract:
The circulation situation and boundary layer characteristics of the typical advection sea fog weather process which caused the suspension of the Beihai-Weizhou Island route from 11 to 13 February 2016 are analyzed by using the conventional ground and high-altitude meteorological observation data, wind profiler radar and NCEP/NCAR reanalysis data. Results show that during this sea fog process, there is southeast wind (3~5 m.s-1) near the surface layer, and near 850 hPa is southwest wind jet (12~15m.s-1). With a certain vertical wind shear below 500 m, the smaller the horizontal wind shear, the severer the sea fog. The atmospheric stratifcation during sea fog is neutral, and the thickness of mixed layer is less than 500 m. The lower the height of the mixed layer, the lower the visibility and the severe the sea fog weather. In addition, the existence of inversion layer near 925 hPa, the high relative humidity of the ground (about 95%) and the small temperature dew point difference (1~2℃) are the obvious characteristics of this process. In brief, the characteristics of boundary layer above can be used as a reference for predicting advection sea fog weather in Beibu Gulf.

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备注/Memo

备注/Memo:
收稿日期:2019-02-28。
基金项目:广西自然科学基金项目(2016GXNSFAA380330)，广西壮族自治区气象服务中心自立项目（201806）
作者简介:叶庚姣(1992-),女,江西赣州人,硕士,助理工程师,主要从事专业气象服务工作。E-mail:1518611932@qq.com
通讯作者:郑凤琴(1978-),女,广东潮州人,硕士,高级工程师,主要从事应用气象研究与预报工作。
更新日期/Last Update: 1900-01-01