干旱区生态环境知识资源中心(Arid): In-situ measurements of fog microphysics: Visibility parameterization and estimation of fog droplet sedimentation velocity

Arid

DOI	10.1016/j.atmosres.2024.107570
	In-situ measurements of fog microphysics: Visibility parameterization and estimation of fog droplet sedimentation velocity
	Nelli, Narendra; Francis, Diana; Abida, Rachid; Fonseca, Ricardo; Masson, Olivier; Bosc, Emmanuel
通讯作者	Francis, D
来源期刊	ATMOSPHERIC RESEARCH
ISSN	0169-8095
EISSN	1873-2895
出版年	2024
卷号	309
英文摘要	Measurements of fog microphysics were conducted during the winter season of 2021 -2022 at the Barakah Nuclear Power Plant (BNPP), located in the Western coastal region of the United Arab Emirates. Twelve fog events were observed during this period. The primary objective of this study is to detail the microphysical characteristics of these events and refine current visibility parameterization schemes based on in-situ measurements of fog microphysical properties. All observed fog events are found to share a common feature of a bimodal distribution in droplet number concentration (Nd), with modes at 4.5 mu m and 23.2 mu m. Despite the high proportion of smaller fog droplets associated with the fine mode, the greatest contribution to the liquid water content (LWC) comes essentially from medium to large droplets between 10 and 35 mu m. The recalibration of existing visibility parameterization schemes revealed that the increase in horizontal visibility with increasing FI (fog index) tends to be more gradual for the studied cases compared to standard visibility parameterization schemes. Additionally, the fog droplet sedimentation velocity, estimated to be at a maximum of 1.85 cm s- 1, occurs predominantly in the LWC range of 100-200 mg m- 3, corresponding to a median volume diameter 24.8 mu m. Our findings shed new light on the complexity of fog microphysics and its impact on visibility, underscoring their importance in refining weather models for accurate fog forecasting.
英文关键词	Hyper-arid regions Radiation fog Fog microphysics Visibility Fog Index Fog droplet sedimentation Fog monitor Microwave radiometer
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:001274551600001
WOS关键词	SURFACE-LAYER STRUCTURE ; AIRCRAFT OBSERVATIONS ; SUMMER MONSOON ; SOLAR ECLIPSE ; RADIATION ; CLOUDS ; DEPOSITION ; AVIATION ; IMPACT ; FOREST
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/402996
推荐引用方式 GB/T 7714	Nelli, Narendra,Francis, Diana,Abida, Rachid,et al. In-situ measurements of fog microphysics: Visibility parameterization and estimation of fog droplet sedimentation velocity[J],2024,309.
APA	Nelli, Narendra,Francis, Diana,Abida, Rachid,Fonseca, Ricardo,Masson, Olivier,&Bosc, Emmanuel.(2024).In-situ measurements of fog microphysics: Visibility parameterization and estimation of fog droplet sedimentation velocity.ATMOSPHERIC RESEARCH,309.
MLA	Nelli, Narendra,et al."In-situ measurements of fog microphysics: Visibility parameterization and estimation of fog droplet sedimentation velocity".ATMOSPHERIC RESEARCH 309(2024).