Impacts of Lateral Boundary Condition Resolution in Tropical Urban Climate Modelling for Kuala Lumpur

Authors

  • Nurul Amirah Isa Universiti Teknologi MARA
  • Siti Aekbal Salleh Universiti Teknologi MARA
  • Wan Mohd Naim Wan Mohd Universiti Teknologi MARA
  • Maggie Chel Gee Ooi National Central University, Taiwan
  • Andy Chan University of Nottingham
  • Md Amirul Islam University of Nottingham Malaysia

DOI:

https://doi.org/10.4186/ej.2021.25.1.165

Keywords:

lateral boundary condition, resolution, WRF, tropical urban, Kuala Lumpur

Abstract

Choosing the best LBCs is still debated among researchers due to the errors resulted. However, several recommendations have been documented to control the errors propagated by LBCs. One of the recommendations is employing higher resolutions LBCs. In the present, many LBCs are developed with various resolutions; spatially and temporally, for many applications but no claims regarding the best LBCs for tropical climate modelling have yet been documented. Therefore, this study intends to analyse the impacts of lateral boundary condition resolution during numerical downscaling within a tropical city. This study serves as a site-specific investigation to determine the suitable LBCs for the focused study area. Two widely used LBCs with different resolutions were utilized to initiate the Weather Research and Forecasting (WRF) simulation model. The performances of the two LBCs were compared using statistical tests and analyses. The study has found that the LBC with higher resolutions excels the other LBC during inter-monsoon season. Nevertheless, it was identified that both LBCs were able to provide reliable reconstruction of the tropical climate condition of the Kuala Lumpur City as portrayed by similar results obtained. Thus, it is concluded that both LBCs can be employed in numerical downscaling for tropical urban regions similar to the Kuala Lumpur City.

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Author Biographies

Nurul Amirah Isa
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Centre of Studies for Surveying Science and Geomatics, Faculty of Architecture, Planning and Surveying, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia

Siti Aekbal Salleh
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Centre of Studies for Surveying Science and Geomatics, Faculty of Architecture, Planning and Surveying, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia

Institute for Biodiversity and Sustainable Development, Applied Remote Sensing and Geospatial Research Group, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia

Wan Mohd Naim Wan Mohd
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Centre of Studies for Surveying Science and Geomatics, Faculty of Architecture, Planning and Surveying, Universiti Teknologi MARA, 40450 Shah Alam, Selangor, Malaysia

Maggie Chel Gee Ooi
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Department of Atmospheric Sciences, National Central University, 32001 Chung-Li, Taiwan

Institute of Climate Change, National University of Malaysia (UKM), 43600 Bangi, Selangor, Malaysia

Andy Chan
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Department of Civil Engineering, Faculty of Engineering, University of Nottingham, Jalan Broga, 43500 Semenyih, Selangor, Malaysia

Md Amirul Islam
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Department of Civil Engineering, Faculty of Engineering, University of Nottingham, Jalan Broga, 43500 Semenyih, Selangor, Malaysia

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Published In
Vol 25 No 1, Jan 31, 2021
How to Cite
[1]
N. A. Isa, S. A. Salleh, W. M. N. W. Mohd, M. C. G. Ooi, A. Chan, and M. A. Islam, “Impacts of Lateral Boundary Condition Resolution in Tropical Urban Climate Modelling for Kuala Lumpur”, Eng. J., vol. 25, no. 1, pp. 165-175, Jan. 2021.
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