气候变化领域集成服务门户(CCPortal): Radiative effects of clouds and fog on long-lasting heavy fog events in northern China

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DOI	10.1016/j.atmosres.2020.105444
	Radiative effects of clouds and fog on long-lasting heavy fog events in northern China
	Guo L.; Guo X.; Luan T.; Zhu S.; Lyu K.
发表日期	2021
ISSN	0169-8095
卷号	252
英文摘要	In the last decade, heavy fog events have been found to last from several days to more than a week and frequently occur in northern China. The mechanism that responsible for the long-lasting heavy fog events has not been fully understood. In this study, the radiative effects of the clouds and fog on two persistent heavy fog events on December 3–6, 2011 (Case-2011) and January 28–31, 2013 (Case-2013) are investigated based on both observations and Weather Research and forecasting (WRF) model. The results indicate that the radiative effects of clouds formed at middle and high levels and fog may play an important role in sustaining long-lasting fog events in northern China. The clouds formed above the fog primarily consist of ice and snow particles with a thickness of more than 3–4 km and cloud base of 3–6 km. During the daytime, the increase in solar radiation reflection caused by both clouds and fog can reduce the mean surface solar radiation by 71% in Case-2011 and 84% in Case-2013, and the contribution from clouds accounts for 18%, which may significantly weaken the surface heating from solar radiation and prevent the dissipation of fog events. While during the nighttime, the greenhouse effect of clouds and fog can increase the mean surface net radiation by 77 W m−2 in Case-2011 and 68 W m−2 in Case-2013, which may reduce the surface long-wave radiative cooling and prevent the further development of fog events. However, the greenhouse effect of clouds and fog during both daytime and nighttime may enhance turbulent processes and cause the fog to rise, and remain in the stable inversion layer © 2020 Elsevier B.V.
英文关键词	Clouds and fog radiative effects; Numerical simulation; Persistent fog events
语种	英语
scopus关键词	Greenhouse effect; Greenhouses; Radiative Cooling; Solar radiation; Weather forecasting; Northern China; Radiative effects; Snow particles; Stable inversion; Surface heating; Surface solar radiation; Turbulent process; Weather research and forecasting models; Fog
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/162078
作者单位	State Key Laboratory of Severe Weather (LASW), Chinese Academy of Meteorological Sciences, Beijing, 100081, China; Key Laboratory for Cloud Physics, Chinese Academy of Meteorological Sciences, Beijing, 100081, China; Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Anhui Weather Modification Office, Hefei, 230031, China; Department of Atmospheric Sciences, Texas A&M University, College Station, TX 77840, United States
推荐引用方式 GB/T 7714	Guo L.,Guo X.,Luan T.,et al. Radiative effects of clouds and fog on long-lasting heavy fog events in northern China[J],2021,252.
APA	Guo L.,Guo X.,Luan T.,Zhu S.,&Lyu K..(2021).Radiative effects of clouds and fog on long-lasting heavy fog events in northern China.Atmospheric Research,252.
MLA	Guo L.,et al."Radiative effects of clouds and fog on long-lasting heavy fog events in northern China".Atmospheric Research 252(2021).