气候变化领域集成服务门户(CCPortal): Observational Signal of the Interaction Between Mountain–Plain Wind and Urban Breeze Under Weak Synoptic Systems

CCPortal

DOI	10.1029/2020JD032809
	Observational Signal of the Interaction Between Mountain–Plain Wind and Urban Breeze Under Weak Synoptic Systems
	Yu B.; Zhu B.; Miao S.; Kang H.; He X.; Liu H.; Liang Z.; Chen F.
发表日期	2021
ISSN	2169897X
卷号	126 期号:8
英文摘要	Valley winds and urban breezes induced by thermal circulation have been the subject of numerous studies; however, their interactions deserve further observational study under different geographical conditions globally. We propose quantitative criteria for analysis of observations, including identification of valley and mountain–plain wind episodes, determination of the direction and duration of valley winds, and exclusion of suspect cases induced by strong synoptic systems. We selected a subset of 345 valley wind days that occurred during 2013–2015 in Hangzhou, China. Valley winds in the study area occur mainly in autumn and early winter (annual frequency: 32%). To the west (east) of the urban center of Hangzhou are small mountains (is a plain). At night, the directions of mountain–plain circulation and urban thermal circulation are consistent in the region from the mountains to western parts of the city, resulting in a strengthened mountain wind at the surface. Their interaction also delays the reversal of the mountain wind to the plain wind in the morning, and slightly advances the reversal of the plain wind to the mountain wind in the evening. Conversely, in the plain area to the east of Hangzhou, the interaction delays the time of reversal of the plain wind to the mountain wind in the evening. Our results indicate that interactions between the urban breeze and local thermal circulations could have distinct impact on the environment of the city and surrounding areas, and thus they should be taken into consideration in relation to urban planning and management. © 2021. American Geophysical Union. All Rights Reserved.
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185278
作者单位	Key Laboratory of Meteorological Disaster, Ministry of Education (KLME), Joint International Research Laboratory of Climate and Environment Change (ILCEC), Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Key Laboratory for Aerosol-Cloud-Precipitation of China Meteorological Administration, Nanjing University of Information Science & Technology, Nanjing, China; Hangzhou Meteorological Bureau, Hangzhou, China; Institute of Urban Meteorology, China Meteorological Administration, Beijing, China; Nanjing University, Nanjing, China; Zhejiang Institute of Meteorological Sciences, Hangzhou, China
推荐引用方式 GB/T 7714	Yu B.,Zhu B.,Miao S.,等. Observational Signal of the Interaction Between Mountain–Plain Wind and Urban Breeze Under Weak Synoptic Systems[J],2021,126(8).
APA	Yu B..,Zhu B..,Miao S..,Kang H..,He X..,...&Chen F..(2021).Observational Signal of the Interaction Between Mountain–Plain Wind and Urban Breeze Under Weak Synoptic Systems.Journal of Geophysical Research: Atmospheres,126(8).
MLA	Yu B.,et al."Observational Signal of the Interaction Between Mountain–Plain Wind and Urban Breeze Under Weak Synoptic Systems".Journal of Geophysical Research: Atmospheres 126.8(2021).