Comparison of WRF local and nonlocal boundary layer Physics in Greater Kuala Lumpur, Malaysia

3rd International Conference on Research Methodology for Built Environment and Engineering 2017

生态环境科学

Ooi, M.C.G.^1,2 ; Chan, A.^1 ; Kumarenthiran, S.^3 ; Morris, K.I.^4,5 ; Oozeer, M.Y.^1 ; Islam, M.A.^1 ; Salleh, S.A.^6

Department of Civil Engineering, University of Nottingham, Malaysia Campus, Malaysia^1

Department of Atmospheric Science, National Central University, Chung-Li, Taiwan^2

Climate and Weather Model Development Section, Malaysian Meteorological Department, Malaysia^3

Center of Excellence for Sustainable Innovation and Research Initiative (CESIRI), Rivers State, Port Harcourt, Nigeria^4

Department of Mechanical Engineering, Ashesi University College, Berekuso, Ghana^5

Faculty of Architecture, Planning and Surveying, Universiti Teknologi MARA, Malaysia^6

关键词: Atmospheric constituents;    Free troposphere;    Near surface temperature;    Nonlocal boundary;    Planetary boundary layers;    Urban boundary layers;    Vertical structures;    Weather research;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/117/1/012015/pdf
DOI  :  10.1088/1755-1315/117/1/012015

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The urban boundary layer (UBL) is the internal advection layer of atmosphere above urban region which determines the exchanges of momentum, water and other atmospheric constituents between the urban land surface and the free troposphere. This paper tested the performance of three planetary boundary layer (PBL) physics schemes of Weather Research and Forecast (WRF) software to ensure the appropriate representation of vertical structure of UBL in Greater Kuala Lumpur (GKL). Comparison was conducted on the performance of respective PBL schemes to generate vertical and near-surface weather profile and rainfall. Mellor-Yamada- Janjíc (MYJ) local PBL scheme coupled with Eta MM5 surface layer scheme was found to predict the near-surface temperature and wind profile and mixing height better than the nonlocal schemes during the intermonsoonal period with least influences of the synoptic background weather.