The Prospect of Urban Geometry Impact on Urban Heat Island: A Case Study of Bangkok

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Parin Buddee
Sirimas Hengrasmee


This research focused on the prospect of urban geometry base on possibility of building at the maximum allowance of current of regulations, and the impact on urban heat island phenomenon in Bangkok Metropolitan. The study is done through prediction of the street canyons of selected case studies. Study areas are based on land use planning issued by Bangkok Metropolitan Authority (BMA) where comparison is made between urban high density (marked as red) and rural (marked as green). Selected area in Petchaburi and Suwinthawong are chosen to represent urban and rural areas respectively, which the main road of both areas are E – W orientation. The urban geometry model of both areas are created by the combination of data from BMA land use plan, transportation projection plan, as well as related building regulations. It appears that the height to width ratio (H/W) along the main road inside the constructed street canyon modeled are 1.7 and 0.2 for urban and rural areas consecutively. Both models are tested using simulations through ENVI-met software. Air temperature data is set to collect at 1.5 meters above ground level on main and side roads of both cases. The results show that Bangkok urban geometry as constructed in accordance with all related laws and regulations to date will have impacts on diurnal and nocturnal urban heat island in the summer time. The maximum heat island intensity is 4.12 Celsius at 1pm. This is due to the dense urban area can reflect less heat than the countryside. Therefore this study provides a method of constructing urban geometry from current laws and regulations to forecast urban heat island and this can be used as a basis for a creation of guideline for lessening the impact of urban heat island in most urban areas.


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Ai, Z. T., & Mak, C. M. (2015). From street canyon microclimate to indoor environmental quality in naturally ventilated urban buildings: Issues and possibilities for improvement. Building and Environment, 94, 489-503. DOI: 10.1016/j.buildenv.2015.10.008

Ali-Toudert, F., & Mayer, H. (2006). Thermal comfort in an east–west oriented street canyon in Freiburg (Germany) under hot summer conditions. Theoretical and Applied Climatology, 87(1-4), 223-237. DOI: 10.1007/s00704-005-0194-4

Arifwidodo, S. (2015). Factors contribution to urban heat island in Bankok, Thailand. ARPN Journal of Engineering and Applied Sciences, 10(5), 6435 – 3439.

Bangkok City Planning Office. (2017). Geographic information system on the network. Retrieved from

Bangkok Information Center. (2013). Current Bangkok. Retrieved from

Bruse, M. (2013). ENVI-met. Retrieved from

Chatzidimitriou, A., & Axarli, K. (2017). Street Canyon Geometry Effects on Microclimate and Comfort; A Case Study in Thessaloniki. Procedia Environmental Sciences, 38, 643-650. DOI: 10.1016/j.proenv.2017.03.144

Goh Kim, C., & Chang Chew, H. (1999). The relationship between height to width ratios and the heat island intensity at 22:00 h for Singapore. International Journal of Climatology, 19(9), 1011-1023. DOI: 10.1002/(SICI)1097-0088(199907)19:9<1011::AID-JOC411>3.0.CO;2-U

Jariya Boonjawat, Kiyoshi Niitsu, & Sachio Kubo. (2000). Urban Heat Island : Thermal Pollution and Climate Change in Bangkok. Journal of Health Science, 9(1).

Keeratikasikorn, C., & Bonafoni, S. (2018). Urban Heat Island Analysis over the Land Use Zoning Plan of Bangkok by Means of Landsat 8 Imagery. Remote Sensing, 10(3), 440. DOI:10.3390/rs10030440

Lobaccaro, G., & Acero, J. A. (2015). Comparative analysis of green actions to improve outdoor thermal comfort inside typical urban street canyons. Urban Climate, 14, 251-267. DOI: 10.1016/j.uclim.2015.10.002

Nakata-Osaki, C. M., Souza, L. C. L., & Rodrigues, D. S. (2018). THIS – Tool for Heat Island Simulation: A GIS extension model to calculate urban heat island intensity based on urban geometry. Computers, Environment and Urban Systems, 67, 157-168. DOI: 10.1016/j.compenvurbsys.2017.09.007

Oke, T. R. (1981). Canyon geometry and the nocturnal urban heat island: Comparison of scale model and field observations. Journal of Climatology, 1(3), 237-254. DOI: 10.1002/joc.3370010304

Oke, T. R. (1987). Boundary Layer Climate. New York: Routledge.

Oke, T. R. (1988). Street design and urban canopy layer climate. Energy and Buildings, 11(1–3), 103-113. DOI:

Pakarnseree, R., Chunkao, K., & Bualert, S. (2018). Physical characteristics of Bangkok and its urban heat island phenomenon. Building and Environment, 143, 561-569. DOI:

Pichamon Leetongin, Daranee Jareemit & Manat Srivanit (2017). Calibration and validation of model creation Outdoor microcirculation in ENVI-met V4 and field measurements: experimental study of single-family residential areas. Built Environment Research Associates Conference 2017, 8, 78-85.

Samsonov, T. E., Konstantinov, P. I., & Varentsov, M. I. (2015). Object-oriented approach to urban canyon analysis and its applications in meteorological modeling. Urban Climate, 13, 122-139. DOI:

Sheng, L., Tang, X., You, H., Gu, Q., & Hu, H. (2017). Comparison of the urban heat island intensity quantified by using air temperature and Landsat land surface temperature in Hangzhou, China. Ecological Indicators, 72, 738-746. DOI: 10.1016/j.ecolind.2016.09.009

Srivanit, M., & Jareemit, D. (2019). Modelling the Urban Microclimate Effects of Street Configurations on Thermal Environment in the Residential Townhouse of Bangkok. International Congress on recent advances in sciences and technology, Kuala Lumpur, Malaysia.

Srivanit, M., & Kazunori, H. (2011). The Influence of Urban Morphology Indicators on Summer Diurnal Range of Urban Climate in Bangkok Metropolitan Area, Thailand. International Journal of Civil & Environmental Engineering, 11(05), 34-46.

Takkanon, P., & Chantarangul, P. (2019). Effects of urban geometry and green area on thermal condition of urban street canyons in Bangkok. Architectural Science Review, 62(1), 35-46. DOI: 10.1080/00038628.2018.1534724

Yassin, M. F., Kellnerová, R., & Jaňour, Z. (2008). Impact of street intersections on air quality in an urban environment. Atmospheric Environment, 42(20), 4948-4963. DOI: