A historical review and assessment of urban heat island research in Singapore

This historical review of 20 studies since the 1960s examines the influence of urban development on the thermal environment in Singapore, a fast growing tropical island city-state. Past observations are critically assessed with regard to experimental controls and station metadata. Given the availability of historical climate and developmental data spanning almost 50 years, changes in urban heat island (UHI) intensity and spatial coverage can be traced temporally. Rapid urban expansion in Singapore is clearly reflected in spatially and temporally changing air and surface temperature patterns. The nocturnal canopy-layer UHI intensity – measured as the difference between the commercial urban core and undeveloped areas close to primary or secondary rainforests for example – doubled in magnitude between 1965 and 2004. At the same time, the spatial extent of the nocturnal UHI has also expanded with the development of new housing and industrial districts. The influence of the growing city is also reflected in surface temperature. Two satellite images dated 13 years apart demonstrate the encroachment of areas with high surface temperatures into previously cooler areas during daytime corresponding with new public housing estates and low-rise residential areas or facilities being built. The results from our study contribute to the growing body of tropical heat island research. They provide baseline data for future research and urban development in the Singapore context and, more generally, offer important cues for urban planners to make tropical cities more sustainable.

[1]  M. Parry,et al.  The climate of London , 1966 .

[2]  T. Oke.  Canyon geometry and the nocturnal urban heat island: Comparison of scale model and field observations , 1981 .

[3]  T. Oke.  The energetic basis of the urban heat island , 1982 .

[4]  W. Emery,et al.  Satellite-derived urban heat islands from three coastal cities and the utilization of such data in urban climatology , 1989 .

[5]  R. J. Dear.  DIURNAL AND SEASONAL VARIATIONS IN THE HUMAN THERMAL CLIMATE OF SINGAPORE , 1989 .

[6]  S. Sani.  Urban climatology in Malaysia: An overview , 1990 .

[7]  S. Changnon.  Inadvertent Weather Modification in Urban Areas: Lessons for Global Climate Change , 1992 .

[8]  J. Nichol.  A GIS-based approach to microclimate monitoring in Singapore's high-rise housing estates , 1994 .

[9]  J. Nichol,et al.  Analysis of the Urban Thermal Environment with LANDSAT Data , 1996 .

[10]  C. P. Tso,et al.  A survey of urban heat island studies in two tropical cities , 1996 .

[11]  J. Nichol.  High-Resolution Surface Temperature Patterns Related to Urban Morphology in a Tropical City: A Satellite-Based Study , 1996 .

[12]  Janet Nichol,et al.  Visualisation of urban surface temperatures derived from satellite images , 1998 .

[13]  Chew Hung Chang,et al.  The relationship between height to width ratios and the heat island intensity at 22:00 h for Singapore , 1999 .

[14]  N. Wong,et al.  The effects of rooftop garden on energy consumption of a commercial building in Singapore , 2003 .

[15]  Ingegärd Eliasson,et al.  Spatial air temperature variations and urban land use — a statistical approach , 2003 .

[16]  N. Wong,et al.  Investigation of thermal benefits of rooftop garden in the tropical environment , 2003 .

[17]  N. Wong,et al.  Study of green areas and urban heat island in a tropical city , 2005 .

[18]  M. Roth,et al.  Temporal dynamics of the urban heat island of Singapore , 2006 .

[19]  M. Roth.  Review of urban climate research in (sub)tropical regions , 2007 .

[20]  N. Wong,et al.  The influence of land use on the urban heat island in Singapore , 2007 .

[21]  Donald M. Yow.  Urban Heat Islands: Observations, Impacts, and Adaptation , 2007 .

[22]  R. Navy.  THERMAL COMFORT IN WARM , HUMID ATMOSPHERES , 2007 .

[23]  Gerald Mills,et al.  Cities as agents of global change , 2007 .

[24]  Wong Nyuk Hien,et al.  Microclimatic modeling of the urban thermal environment of Singapore to mitigate urban heat island , 2008 .

[25]  N. Wong,et al.  Study on the microclimate condition along a green pedestrian canyon in Singapore , 2010 .

[26]  Winston Boo Thian Toh,et al.  HDB's next generation of eco-districts at Punggol and eco-modernisation of existing towns , 2010 .

[27]  Soo Chin Liew,et al.  The vegetation of Singapore - an updated map. , 2011 .

[28]  I. Stewart,et al.  A systematic review and scientific critique of methodology in modern urban heat island literature , 2011 .

[29]  M. Roth,et al.  Diurnal and weekly variation of anthropogenic heat emissions in a tropical city, Singapore , 2012 .