气候变化领域集成服务门户(CCPortal): Impact of water vapor transfer on a Circum-Bohai-Sea heavy fog: Observation and numerical simulation

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DOI	10.1016/j.atmosres.2019.06.008
	Impact of water vapor transfer on a Circum-Bohai-Sea heavy fog: Observation and numerical simulation
	Tian M.; Wu B.; Huang H.; Zhang H.; Zhang W.; Wang Z.
发表日期	2019
ISSN	0169-8095
起始页码	1
结束页码	22
卷号	229
英文摘要	a wide-range winter frontal fog that happened over Circum-Bohai-Sea (CBS) on December 17–192,016 was observed using satellite cloud image inversion, surface, ocean buoy, and radiosonde data. The evolution of fog processes was investigated with numerical simulations using the Weather Research and Forecasting (WRF) Model together with the FNL (Final) reanalysis data. The results show that the WRF model can reproduce the features of the heavy fog generation and development. The observed results show following characteristics: (1) Before fog appearance, the southwest low-level jet (LLJ) of which the wind speed was over 16 m/s at 925 hPa developed. The LLJ carrying warm and wet air provided a stable inversion layer about 1200 m thick and continuous vapor transport to the CBS area, which is favorable for the formation of heavy fog. With the weak northwestern cold air moving towards the CBS area, a typical frontal fog process was triggered; (2) the weak cold air did not destroy the structure of low-level thermal inversion, and the heavy fog maintained. With the weak front moving towards the east, the foggy coverage continually extended over the sea surface, finally covering the Bohai Sea and the North Yellow Sea. A water-vapor sensitivity test suggests that with the LLJ continually conveying water vapor to the area, the accumulative effect of an increase in water vapor content took place in the low-level atmosphere, which changed the temperature and humidity structure of the boundary layer. The liquid water content, coverage area, and thickness of fog changed drastically. © 2019 Elsevier B.V.
英文关键词	Heavy fog; Low-level jet; Moisture transport; Stable boundary layer
语种	英语
scopus关键词	Boundary layers; Electric circuit breakers; Numerical models; Surface waters; Water vapor; Weather forecasting; Wind; Low level jet; Moisture transport; Satellite cloud images; Stable boundary layer; Temperature and humidities; Water vapor contents; Water vapor transfer; Weather research and forecasting models; Fog; boundary layer; computer simulation; fog; jet; moisture transfer; numerical model; vaporization; water vapor; weather forecasting; Bohai Sea; Pacific Ocean; Yellow Sea
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162254
作者单位	Key Laboratory for Semi-Arid Climate Change of the Ministry of Education, College of Atmospheric Sciences, Lanzhou University, Lanzhou, 730000, China; Tianjin Meteorological Bureau, Tianjin, 300074, China; Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing, 100871, China
推荐引用方式 GB/T 7714	Tian M.,Wu B.,Huang H.,et al. Impact of water vapor transfer on a Circum-Bohai-Sea heavy fog: Observation and numerical simulation[J],2019,229.
APA	Tian M.,Wu B.,Huang H.,Zhang H.,Zhang W.,&Wang Z..(2019).Impact of water vapor transfer on a Circum-Bohai-Sea heavy fog: Observation and numerical simulation.Atmospheric Research,229.
MLA	Tian M.,et al."Impact of water vapor transfer on a Circum-Bohai-Sea heavy fog: Observation and numerical simulation".Atmospheric Research 229(2019).