DOI: 10.1002/jgrd.50795
论文题名: A multi-resolution ensemble study of a tropical urban environment and its interactions with the background regional atmosphere
作者: Li X.-X. ; Koh T.-Y. ; Entekhabi D. ; Roth M. ; Panda J. ; Norford L.K.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 17 起始页码: 9804
结束页码: 9818
语种: 英语
英文关键词: anthropogenic heat
; planetary boundary layer
; sea/land breeze
; urban canopy model
; urban heat island
; WRF
Scopus关键词: Atmospheric thermodynamics
; Land use
; Sensor networks
; Thermal pollution
; Urban planning
; Weather forecasting
; Anthropogenic heat
; Planetary boundary layers
; sea/land breeze
; Urban canopy models
; Urban heat island
; WRF
; Tropics
; atmospheric modeling
; boundary layer
; data set
; flux measurement
; forecasting method
; heat balance
; heat island
; land breeze
; potential energy
; sea breeze
; tropical environment
; urban area
; Singapore [Southeast Asia]
英文摘要: This study employed the Weather Research and Forecasting model with a single-layer urban canopy model to investigate the urban environment of a tropical city, Singapore. The coupled model was evaluated against available observational data from a sensor network and flux tower. The effects of land use type and anthropogenic heat (AH) on the thermal and wind environment were investigated with a series of sensitivity tests using an ensemble approach for low advection, high convective available potential energy, intermonsoon season cases. The diurnal cycle and spatial pattern of urban heat island (UHI) intensity and planetary boundary layer height were investigated. The mean UHI intensity peaked in the early morning at 2.2°C, reaching 2.4°C in industrial areas. Sea and land breezes developed during daytime and nighttime, respectively, with the former much stronger than the latter. The model predicted that sea breezes from different coastlines of the Malay Peninsula meet and converge, inducing strong updrafts. AH was found to play roles in all the processes studied, while the effect of different land use types was most pronounced during nighttime, and least visible near noon. Key PointsAdopted an ensemble approach to study the tropical urban environmentEvaluated the coupled WRF/urban canopy model with data in a tropical cityCharacterized the tropical urban heat island and boundary-layer processes ©2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63343
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
There are no files associated with this item.
作者单位: CENSAM, Singapore-MIT Alliance for Research and Technology (SMART), 1 CREATE Way, Singapore 138602, Singapore; School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore, Singapore; Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, United States; Department of Geography, National University of Singapore, Singapore, Singapore; Department of Architecture, Massachusetts Institute of Technology, Cambridge, MA, United States
Recommended Citation:
Li X.-X.,Koh T.-Y.,Entekhabi D.,et al. A multi-resolution ensemble study of a tropical urban environment and its interactions with the background regional atmosphere[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(17)