Impact of urbanization level on the interactions of urban area, the urban climate, and human thermal comfort

Kenobi Isima Morris, Andy Chan, Kwami Justina Kwami Morris, Maggie C G Ooi, Muhammad Y. Oozeer, Yousif Abdalla Abakr, Mohd Shahrul Mohd Nadzir, Isah Yakub Mohammed, Haidar Fadhil Al-Qrimli

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

One significant effect of urbanization is the modification of natural surfaces, local environment, and thermal comfort. Farmland and agricultural land in Klang Valley conurbation, Malaysia have been replaced with engineered surfaces and infrastructures to accommodate the rapid population growth witnessed in the past decades. To understand the current environmental conditions of the conurbation, numerical Weather Research and Forecasting (WRF) model coupled to the Urban Canopy Model (UCM) was used. A model evaluation conducted against a network of observations showed an overall good performance of the model in predicting near-surface meteorological parameters. Also, an examination of spatiotemporal variability of urban parameters revealed a diurnal dependence of human physiological thermal conditions on urbanization level. A maximum urban heat island intensity (UHII) of ∼2.64 °C was observed. In an effort to investigate the effect of urbanization level on the extremities of urban climatic conditions, two different experiments with varying urban/vegetation fractions were further simulated. The latter results indicate that urbanization level has a significant effect on the extremities of urban climatological parameters and spatial extent of the induced impacts. Furthermore, the effect of urbanization level on the mean urban outdoor thermal discomfort (UOTD) level was significant (with an increase of 0.7 °C, 0.64 °C and 0.04 observed) for temperature humidity index (THI), effective temperature index (ETI) and relative strain index (RSI), respectively. However, a non-significant (at 95% level) effect of urbanization level on the extremities of UOTD indices was observed.

Original languageEnglish
Pages (from-to)50-72
Number of pages23
JournalApplied Geography
Volume79
DOIs
Publication statusPublished - 1 Feb 2017

Fingerprint

urban climate
urbanization
urban areas
urban area
climate
heat
interaction
agricultural land
meteorological parameters
heat island
infrastructure
population growth
Malaysia
environmental factors
Urbanization
Urban areas
Climate
Interaction
Thermal comfort
humidity

Keywords

  • Human thermal comfort
  • Near-surface meteorology
  • Tropical environment - Klang Valley, Malaysia
  • Urban heat island
  • Urbanization effect
  • WRF/UCM/Noah

ASJC Scopus subject areas

  • Forestry
  • Geography, Planning and Development
  • Environmental Science(all)
  • Tourism, Leisure and Hospitality Management

Cite this

Morris, K. I., Chan, A., Morris, K. J. K., Ooi, M. C. G., Oozeer, M. Y., Abakr, Y. A., ... Al-Qrimli, H. F. (2017). Impact of urbanization level on the interactions of urban area, the urban climate, and human thermal comfort. Applied Geography, 79, 50-72. https://doi.org/10.1016/j.apgeog.2016.12.007

Impact of urbanization level on the interactions of urban area, the urban climate, and human thermal comfort. / Morris, Kenobi Isima; Chan, Andy; Morris, Kwami Justina Kwami; Ooi, Maggie C G; Oozeer, Muhammad Y.; Abakr, Yousif Abdalla; Mohd Nadzir, Mohd Shahrul; Mohammed, Isah Yakub; Al-Qrimli, Haidar Fadhil.

In: Applied Geography, Vol. 79, 01.02.2017, p. 50-72.

Research output: Contribution to journalArticle

Morris, KI, Chan, A, Morris, KJK, Ooi, MCG, Oozeer, MY, Abakr, YA, Mohd Nadzir, MS, Mohammed, IY & Al-Qrimli, HF 2017, 'Impact of urbanization level on the interactions of urban area, the urban climate, and human thermal comfort', Applied Geography, vol. 79, pp. 50-72. https://doi.org/10.1016/j.apgeog.2016.12.007
Morris, Kenobi Isima ; Chan, Andy ; Morris, Kwami Justina Kwami ; Ooi, Maggie C G ; Oozeer, Muhammad Y. ; Abakr, Yousif Abdalla ; Mohd Nadzir, Mohd Shahrul ; Mohammed, Isah Yakub ; Al-Qrimli, Haidar Fadhil. / Impact of urbanization level on the interactions of urban area, the urban climate, and human thermal comfort. In: Applied Geography. 2017 ; Vol. 79. pp. 50-72.
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