[1]韦晶晶,钟利华,郑凤琴,等.北部湾海雾冷暖空气输送特征[J].气象研究与应用,2022,43(03):14-19.[doi:10.19849/j.cnki.CN45-1356/P.2022.3.03]
　Wei Jingjing,Zhong Lihua,Zheng Fengqin,et al.Characteristics of cold and warm air transport of sea fog in Beibu Gulf[J].Journal of Meteorological Research and Application,2022,43(03):14-19.[doi:10.19849/j.cnki.CN45-1356/P.2022.3.03]
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北部湾海雾冷暖空气输送特征()
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气象研究与应用[ISSN:1673-8411/CN:45-1356/P]

卷:
第43卷
期数:
2022年03期
页码:
14-19
栏目:
研究论文
出版日期:
2022-09-15

文章信息/Info

Title:
Characteristics of cold and warm air transport of sea fog in Beibu Gulf
作者:
韦晶晶1; 2;  钟利华2;  郑凤琴3;  韦美闹4;  古明悦5
1. 广西壮族自治区气象台, 南宁 530022;
2. 广西壮族自治区气象灾害防御技术中心, 南宁 530022;
3. 广西壮族自治区气候中心, 南宁 530022;
4. 钦州市气象局, 广西 钦州 535000;
5. 隆安县气象局, 广西 隆安 532799
Author(s):
Wei Jingjing1; 2;  Zhong Lihua2;  Zheng Fengqin3;  Wei Meinao4;  Gu Mingyue5
1. Guangxi Meteorological Observatory, Nanning 530022, China;
2. Guangxi Meteorological Disaster Prevention Technology Center, Nanning 530022, China;
3. Guangxi Climate Center, Nanning 530022, China;
4. Qinzhou Meteorological Bureau, Guangxi Qinzhou 535000, China;
5. Long’an Meteorological Servise, Guangxi Long’an 532799, China
关键词:
北部湾; 海雾过程; 西南急流指数; 气压差; 合成分析
Keywords:
Beibu Gulf; sea fog; southerly air index; air pressure difference; composite analysis
分类号:
P458
DOI:
10.19849/j.cnki.CN45-1356/P.2022.3.03
摘要:
利用常规观测资料和ERA5再分析资料，采用合成分析方法对2015-2020年北部湾地区不同类型海雾过程的海平面气压场和850hPa风场进行分析，并通过计算海雾出现前后北部湾及其附近区域海平面气压差及西南急流指数，分析了北部湾海雾冷暖空气输送特征。结果表明：入海高压后部型、西南倒槽型和静止锋型海雾发生前5d，广西至北部湾地区有冷空气堆积，形成冷垫；冷锋前部型海雾发生前3d，广西有冷空气堆积，海雾发生时有弱冷空气影响北部湾地区；海雾发生前北部湾地区层结较为稳定，在出雾前两天西南急流指数迅速增大，暖湿空气不断向华南地区输送，推动冷空气减弱北移，出雾前一天和出雾当天西南急流指数有所减小，有利于冷暖空气在北部湾地区对峙从而形成海雾。
Abstract:
Using conventional observation data and ERA5 reanalysis data, the sea level pressure field and 850hPa wind field characteristics of different types of sea fog were synthesized and analyzed in the Beibu Gulf from 2015 to 2020. The sea level pressure difference and southwest jet index in the Beibu Gulf and its surrounding areas before and after the occurrence of sea fog were also calculated to analyze the characteristics of cold and warm air transport of sea fog in Beibu Gulf. The results show that:Five days before the occurrence of the sea fog of the high pressure rear entering the sea type, the southwest inverted trough type and the stationary front type, cold air accumulated from Guangxi to the Beibu Gulf, forming a cold cushion. Three days before the occurrence of cold front type of sea fog, there is cold air accumulation in Guangxi, and weak cold air affects the Beibu Gulf area when the sea fog occurrs. Before the occurrence of the sea fog, the stratification in the Beibu Gulf is relatively stable; The southwest jet index increases rapidly two days before the fog appeared, and the warmer and more humid air is continuously transported to southern China, which pushes the cold air to weaken and move northward. The southwest rapids index decreases on the day before and on the day of the fog, which is conducive to the confrontation between cold and warm air in the Beibu Gulf area, forming a sea fog weather process.

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备注/Memo

备注/Memo:
收稿日期:2022-03-15。
基金项目:广西重点研发计划项目（桂科AB20159013）
作者简介:韦晶晶(1990-),女,广西南宁市人,助理工程师,主要从事专业气象服务工作。E-mail:30799321@qq.com
通讯作者:钟利华(1962-),女,广西恭城人,正研级高级工程师,主要从事天气预报研究与服务。E-mail:1427962612@qq.com
更新日期/Last Update: 1900-01-01