DOI: 10.1002/2015MS000522
Scopus记录号: 2-s2.0-84959462486
论文题名: Seasonal variation of local atmospheric circulations and boundary layer structure in the Beijing-Tianjin-Hebei region and implications for air quality
作者: Miao Y ; , Hu X ; -M ; , Liu S ; , Qian T ; , Xue M ; , Zheng Y ; , Wang S
刊名: Journal of Advances in Modeling Earth Systems
ISSN: 19422466
出版年: 2015
卷: 7, 期: 4 起始页码: 1602
结束页码: 1626
语种: 英语
英文关键词: Air pollution
; Air quality
; Atmospheric movements
; Atmospheric structure
; Boundary layers
; Climatology
; Coastal zones
; Meteorology
; Pollution
; Atmospheric circulation
; Boundary layer structure
; Seasonal climate
; Tianjin
; WRF
; Atmospheric boundary layer
; air quality
; atmospheric circulation
; atmospheric forcing
; atmospheric modeling
; atmospheric pollution
; boundary layer
; haze
; mountain environment
; sea breeze
; seasonal variation
; topography
; Beijing [China]
; China
; Hebei
; Tianjin
英文摘要: The Beijing-Tianjin-Hebei (BTH) region experiences frequent heavy haze pollution in fall and winter. Pollution was often exacerbated by unfavorable atmospheric boundary layer (BL) conditions. The topography in this region impacts the BL processes in complex ways. Such impacts and implications on air quality are not yet clearly understood. The BL processes in all four seasons in BTH are thus investigated in this study using idealized simulations with the WRF-Chem model. Results suggest that seasonal variation of thermal conditions and synoptic patterns significantly modulates BL processes. In fall, with a relatively weak northwesterly synoptic forcing, thermal contrast between the mountains and the plain leads to a prominent mountain-plain breeze circulation (MPC). In the afternoon, the downward branch of the MPC, in addition to northwesterly warm advection, suppresses BL development over the western side of BTH. In the eastern coastal area, a sea-breeze circulation develops late in the morning and intensifies during the afternoon. In summer, southeasterly BL winds allow the see-breeze front to penetrate farther inland (∼150 km from the coast), and the MPC is less prominent. In spring and winter, with strong northwesterly synoptic winds, the sea-breeze circulation is confined in the coastal area, and the MPC is suppressed. The BL height is low in winter due to strong near-surface stability, while BL heights are large in spring due to strong mechanical forcing. The relatively low BL height in fall and winter may have exacerbated the air pollution, thus contributing to the frequent severe haze events in the BTH region. © 2015. The Authors. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/75959
Appears in Collections: 影响、适应和脆弱性 气候变化与战略
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作者单位: Department of Atmospheric and Oceanic Sciences, School of Physics, Peking University, Beijing, China; Key Laboratory of Meteorological Disaster of Ministry of Education, Nanjing University of Information Science and Technology, Nanjing, China; Center for Analysis and Prediction of Storms, School of Meteorology, University of Oklahoma, Norman, OK, United States; State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, China
Recommended Citation:
Miao Y,, Hu X,-M,et al. Seasonal variation of local atmospheric circulations and boundary layer structure in the Beijing-Tianjin-Hebei region and implications for air quality[J]. Journal of Advances in Modeling Earth Systems,2015-01-01,7(4)