Impact of high-frequency observations on fog forecasting: a case study of OSSE

doi:10.1080/16000870.2017.1396182

	Impact of high-frequency observations on fog forecasting: a case study of OSSE
	Hu, Huiqin 1,2,3; Zhang, Qinghong 2; Sun, Juanzhen 3; Ruan, Chengqing 4; Huang, Fei 1,5,6; Zhang, Shaoqing 5,6
刊名	TELLUS SERIES A-DYNAMIC METEOROLOGY AND OCEANOGRAPHY
	2017-11-16
卷号	69
关键词	fog high-frequency observations 3D-Var LSAC OSSE
ISSN号	1600-0870
DOI	10.1080/16000870.2017.1396182
英文摘要	Fog that refers to the concentration of ice or water droplets in the near surface air is an important short-time meteorological phenomenon. As the measure of visibility of air environment, it directly affects societal economic activities and daily lives. As more and more high-frequency observations (observations with short time intervals) become available, understanding how to make full use of such observed data to improve fog forecasting is an important and urgent research topic. Based on the Weather Research and Forecasting (WRF) Model and an observation simulation system experiment (OSSE) framework, this study explores a modified three-dimensional variational (3D-Var) data assimilation (DA) scheme to address the utilization of high-frequency observations on fog forecasting. In the modified 3D-Var scheme, the large-scale analysis constraint (LSAC) method is employed to the WRF 3D-Var. A dense fog event, which occurred in the North of China in 2007, is selected for the case study. Experimental results show that coherently combining high-frequency observational information with large-scale analysis information enables to significantly improve the 3D-Var analyses and the initialized model forecasts of fog coverage, especially over areas with coarse observations. The modified scheme is therefore promising for improving the routine forecasting of coastal sea fog. The optimal DA interval for fog forecasting is also discussed in this study.
URL标识	查看原文
资助项目	GYHY[201006011]
WOS研究方向	Meteorology & Atmospheric Sciences ; Oceanography
语种	英语
出版者	TAYLOR & FRANCIS LTD
WOS记录号	WOS:000416984200001
内容类型	期刊论文
源URL	[http://ir.fio.com.cn/handle/2SI8HI0U/3045]
专题	自然资源部第一海洋研究所
作者单位	1.Ocean Univ China, Coll Ocean & Atmospher Sci, Qingdao, Peoples R China; 2.Peking Univ, Sch Phys, Dept Atmospher & Ocean Sci, Lab Climate & Ocean Atmosphere Studies, Beijing, Peoples R China; 3.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA; 4.State Ocean Adm, North China Sea Marine Forecasting Ctr, Qingdao, Peoples R China; 5.Ocean Univ China, Phys Oceanog Lab CIMST, Qingdao, Peoples R China; 6.Qingdao Natl Lab Marine Sci & Technol, Qingdao, Peoples R China
推荐引用方式 GB/T 7714	Hu, Huiqin,Zhang, Qinghong,Sun, Juanzhen,et al. Impact of high-frequency observations on fog forecasting: a case study of OSSE[J]. TELLUS SERIES A-DYNAMIC METEOROLOGY AND OCEANOGRAPHY,2017,69.
APA	Hu, Huiqin,Zhang, Qinghong,Sun, Juanzhen,Ruan, Chengqing,Huang, Fei,&Zhang, Shaoqing.(2017).Impact of high-frequency observations on fog forecasting: a case study of OSSE.TELLUS SERIES A-DYNAMIC METEOROLOGY AND OCEANOGRAPHY,69.
MLA	Hu, Huiqin,et al."Impact of high-frequency observations on fog forecasting: a case study of OSSE".TELLUS SERIES A-DYNAMIC METEOROLOGY AND OCEANOGRAPHY 69(2017).