DOI: 10.1016/j.atmosres.2018.07.015
Scopus记录号: 2-s2.0-85050732408
论文题名: Effect of sea breeze propagation on the urban boundary layer of the metropolitan region of Sao Paulo, Brazil
作者: Ribeiro F.N.D. ; Oliveira A.P.D. ; Soares J. ; Miranda R.M.D. ; Barlage M. ; Chen F.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 214 起始页码: 174
结束页码: 188
语种: 英语
英文关键词: Coastal megacity
; Sea breeze
; Urban boundary layer
; WRF model
Scopus关键词: Air quality
; Thermal gradients
; Weather forecasting
; Complex topographies
; Megacities
; Observational analysis
; Sea breeze
; Thermal internal boundary layer
; Urban boundary layers
; Weather research and forecasting
; WRF Model
; Boundary layers
; atmospheric circulation
; atmospheric modeling
; boundary layer
; cooling
; heat island
; megacity
; metropolitan area
; propagation (horticulture)
; sea breeze
; urban climate
; weather forecasting
; Brazil
; Sao Paulo [Brazil]
; Sao Paulo [Sao Paulo (STT)]
英文摘要: Thermally driven circulations over urban areas, such as sea, lake, and land breezes and mountain-valley and urban heat island (UHI) circulations, strongly determine local weather and air quality conditions over highly populated areas. This study investigates the influence of sea breeze (SB) propagation on the development of the urban boundary layer (UBL) in the Metropolitan Region of Sao Paulo (MRSP), Brazil, an urban area with complex topography. This investigation is undertaken observationally by analyzing surface and upper air observations conducted in 2013 during the MCITY BRAZIL Project field campaigns and is conducted numerically by performing a set of Weather Research and Forecasting (WRF) simulations. The observational analysis highlights two SB events in the MRSP, one in February (austral summer) and the other in August (winter). In both seasons, the passage of the SB front disrupts the convective growth of the UBL and establishes a thermal internal boundary layer, thereby reducing the UBL height. The cooling also momentarily disrupts the UHI circulation. The results indicate that topography enhances SB propagation because it helps the marine air to go up the MRSP coastal escarpment and to reach the plateau while forcing adiabatic cooling of this air, intensifying the thermal gradient between the southern part of the plateau and the urban area. The UHI further increases the thermal gradient (from 0.5 K to 2 K in summer and 1 to 2.5 K in winter), accelerating the SB propagation. Synoptic conditions determine whether the SB front reaches the urban area and also may displace the convergence center of the UHI circulation. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108743
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: School of Arts, Sciences and Humanities, University of Sao Paulo, Av. Arlindo Bettio, 1000, Vila Guaraciaba, Sao Paulo, SP 03828-000, Brazil; Institute of Astronomy, Geophysics and Atmospheric Sciences, University of Sao Paulo, Rua do Matao, 1226, Butantã, Sao Paulo, SP 05508-090, Brazil; National Center for Atmospheric Research (NCAR), 3450 Mitchell Lane, Boulder, CO 80301, United States
Recommended Citation:
Ribeiro F.N.D.,Oliveira A.P.D.,Soares J.,et al. Effect of sea breeze propagation on the urban boundary layer of the metropolitan region of Sao Paulo, Brazil[J]. Atmospheric Research,2018-01-01,214