Urbanisation and urban climate of a tropical conurbation, Klang Valley, Malaysia

Kenobi Isima Morris, Andy Chan, Kwami Justina Kenobi Morris, Maggie C G Ooi, Muhammad Yaasiin Oozeer, Yousif Abdalla Abakr, Mohd Shahrul Mohd Nadzir, Isah Yakub Mohammed

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

Tropical urban climatology is not well understood. This study aims to provide insight on the interactions of urbanisation and the urban climate. The Weather Research and Forecasting (WRF) model is used to study the urban climate of a tropical conurbation - Klang Valley, Malaysia. Anthropogenic heat and landuse landcover datasets of the valley were parameterised to improve model's performance and to better represent the heterogeneity in surface characteristics. Simulated results indicate that urbanisation induces spatiotemporal changes in urban climate parameters, such as canopy layer temperature (T2m), planetary boundary layer height (PBLH), sensible heat flux (SH), and latent heat flux (LH). Other effects of urbanisation over the area include modification of surface energy components, which significantly affect the diurnal temperature range (DTR) above rural and urban surfaces. Urban development gradient causes T2m and urban heat island intensity (UHII) to decrease radially away from the urban centre. The commercial district with higher urbanisation density exhibited maximum heating, UHII, during the period studied. Moreover, urbanisation effect on UHI diurnal cycle was significant during morning and nighttime, meanwhile, during daytime, the spatiotemporal changes and distribution of UHI were dominated by solar radiation. The influence of wind system was also observed on the spatiotemporal variation in meteorology of the area; especially along the coastline bordering Strait of Malacca (by sea-land breezes) and the Titiwangsa mountain range (by mountain-valley breezes).

Original languageEnglish
JournalUrban Climate
DOIs
Publication statusAccepted/In press - 5 Sep 2015

Fingerprint

urban climate
heat
Malaysia
urbanization
climate
valley
heat island
meteorology
latent heat flux
sensible heat flux
heat pump
surface energy
urban development
climatology
strait
solar radiation
land cover
boundary layer
temperature
conurbation

ASJC Scopus subject areas

  • Geography, Planning and Development
  • Environmental Science (miscellaneous)
  • Urban Studies
  • Atmospheric Science

Cite this

Morris, K. I., Chan, A., Morris, K. J. K., Ooi, M. C. G., Oozeer, M. Y., Abakr, Y. A., ... Mohammed, I. Y. (Accepted/In press). Urbanisation and urban climate of a tropical conurbation, Klang Valley, Malaysia. Urban Climate. https://doi.org/10.1016/j.uclim.2016.12.002

Urbanisation and urban climate of a tropical conurbation, Klang Valley, Malaysia. / Morris, Kenobi Isima; Chan, Andy; Morris, Kwami Justina Kenobi; Ooi, Maggie C G; Oozeer, Muhammad Yaasiin; Abakr, Yousif Abdalla; Mohd Nadzir, Mohd Shahrul; Mohammed, Isah Yakub.

In: Urban Climate, 05.09.2015.

Research output: Contribution to journalArticle

Morris, Kenobi Isima ; Chan, Andy ; Morris, Kwami Justina Kenobi ; Ooi, Maggie C G ; Oozeer, Muhammad Yaasiin ; Abakr, Yousif Abdalla ; Mohd Nadzir, Mohd Shahrul ; Mohammed, Isah Yakub. / Urbanisation and urban climate of a tropical conurbation, Klang Valley, Malaysia. In: Urban Climate. 2015.
@article{1adb8070e96c4a4cb81683237a6fb703,
title = "Urbanisation and urban climate of a tropical conurbation, Klang Valley, Malaysia",
abstract = "Tropical urban climatology is not well understood. This study aims to provide insight on the interactions of urbanisation and the urban climate. The Weather Research and Forecasting (WRF) model is used to study the urban climate of a tropical conurbation - Klang Valley, Malaysia. Anthropogenic heat and landuse landcover datasets of the valley were parameterised to improve model's performance and to better represent the heterogeneity in surface characteristics. Simulated results indicate that urbanisation induces spatiotemporal changes in urban climate parameters, such as canopy layer temperature (T2m), planetary boundary layer height (PBLH), sensible heat flux (SH), and latent heat flux (LH). Other effects of urbanisation over the area include modification of surface energy components, which significantly affect the diurnal temperature range (DTR) above rural and urban surfaces. Urban development gradient causes T2m and urban heat island intensity (UHII) to decrease radially away from the urban centre. The commercial district with higher urbanisation density exhibited maximum heating, UHII, during the period studied. Moreover, urbanisation effect on UHI diurnal cycle was significant during morning and nighttime, meanwhile, during daytime, the spatiotemporal changes and distribution of UHI were dominated by solar radiation. The influence of wind system was also observed on the spatiotemporal variation in meteorology of the area; especially along the coastline bordering Strait of Malacca (by sea-land breezes) and the Titiwangsa mountain range (by mountain-valley breezes).",
author = "Morris, {Kenobi Isima} and Andy Chan and Morris, {Kwami Justina Kenobi} and Ooi, {Maggie C G} and Oozeer, {Muhammad Yaasiin} and Abakr, {Yousif Abdalla} and {Mohd Nadzir}, {Mohd Shahrul} and Mohammed, {Isah Yakub}",
year = "2015",
month = "9",
day = "5",
doi = "10.1016/j.uclim.2016.12.002",
language = "English",
journal = "Urban Climate",
issn = "2212-0955",
publisher = "Elsevier BV",

}

TY - JOUR

T1 - Urbanisation and urban climate of a tropical conurbation, Klang Valley, Malaysia

AU - Morris, Kenobi Isima

AU - Chan, Andy

AU - Morris, Kwami Justina Kenobi

AU - Ooi, Maggie C G

AU - Oozeer, Muhammad Yaasiin

AU - Abakr, Yousif Abdalla

AU - Mohd Nadzir, Mohd Shahrul

AU - Mohammed, Isah Yakub

PY - 2015/9/5

Y1 - 2015/9/5

N2 - Tropical urban climatology is not well understood. This study aims to provide insight on the interactions of urbanisation and the urban climate. The Weather Research and Forecasting (WRF) model is used to study the urban climate of a tropical conurbation - Klang Valley, Malaysia. Anthropogenic heat and landuse landcover datasets of the valley were parameterised to improve model's performance and to better represent the heterogeneity in surface characteristics. Simulated results indicate that urbanisation induces spatiotemporal changes in urban climate parameters, such as canopy layer temperature (T2m), planetary boundary layer height (PBLH), sensible heat flux (SH), and latent heat flux (LH). Other effects of urbanisation over the area include modification of surface energy components, which significantly affect the diurnal temperature range (DTR) above rural and urban surfaces. Urban development gradient causes T2m and urban heat island intensity (UHII) to decrease radially away from the urban centre. The commercial district with higher urbanisation density exhibited maximum heating, UHII, during the period studied. Moreover, urbanisation effect on UHI diurnal cycle was significant during morning and nighttime, meanwhile, during daytime, the spatiotemporal changes and distribution of UHI were dominated by solar radiation. The influence of wind system was also observed on the spatiotemporal variation in meteorology of the area; especially along the coastline bordering Strait of Malacca (by sea-land breezes) and the Titiwangsa mountain range (by mountain-valley breezes).

AB - Tropical urban climatology is not well understood. This study aims to provide insight on the interactions of urbanisation and the urban climate. The Weather Research and Forecasting (WRF) model is used to study the urban climate of a tropical conurbation - Klang Valley, Malaysia. Anthropogenic heat and landuse landcover datasets of the valley were parameterised to improve model's performance and to better represent the heterogeneity in surface characteristics. Simulated results indicate that urbanisation induces spatiotemporal changes in urban climate parameters, such as canopy layer temperature (T2m), planetary boundary layer height (PBLH), sensible heat flux (SH), and latent heat flux (LH). Other effects of urbanisation over the area include modification of surface energy components, which significantly affect the diurnal temperature range (DTR) above rural and urban surfaces. Urban development gradient causes T2m and urban heat island intensity (UHII) to decrease radially away from the urban centre. The commercial district with higher urbanisation density exhibited maximum heating, UHII, during the period studied. Moreover, urbanisation effect on UHI diurnal cycle was significant during morning and nighttime, meanwhile, during daytime, the spatiotemporal changes and distribution of UHI were dominated by solar radiation. The influence of wind system was also observed on the spatiotemporal variation in meteorology of the area; especially along the coastline bordering Strait of Malacca (by sea-land breezes) and the Titiwangsa mountain range (by mountain-valley breezes).

UR - http://www.scopus.com/inward/record.url?scp=85008313713&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85008313713&partnerID=8YFLogxK

U2 - 10.1016/j.uclim.2016.12.002

DO - 10.1016/j.uclim.2016.12.002

M3 - Article

JO - Urban Climate

JF - Urban Climate

SN - 2212-0955

ER -