Reconsidering Urban Densification for Microclimatic Improvement: Planning and Design Strategies for Istanbul




Istanbul, spatial planning, urban density, urban design, urban heat island


One of the key issues of the urban planning agenda is how urban density be decided in the spatial configurations of future neighbourhoods to overcome complex challenges such as urban warming. This paper aims to reconsider urban density as a spatial planning instrument to develop effective densification policies, planning and design strategies in terms of surface urban heat island (SUHI) mitigation in Istanbul. The quantitative research embraced a four-stage methodology including grid-based sampling design, decoding the taxonomy of urban density-matrix (UDM), land surface temperature mapping, and ANOVA tests. Tests were conducted on the UDM consisting of nine building typologies representing the horizontal and vertical urban density. The research indicated that the impact of urbanisation on SUHI can be mitigated by controlling densities and urban forms based on quantitative findings. The highest temperatures were recorded in areas with high-coverage-mid-rise and mid-coverage-mid-rise development. The different levels of SUHI in different building typologies having the same density indicated the mitigation potentials of the built-form in Istanbul's local urban warming. Low coverage and high-rise building forms were an optimal solution for mitigating SUHI in densely populated urban areas. The research gives insight into an ongoing debate among urban professionals in Istanbul concerning the impacts of density and the urban form for climate adaptation. It enables professionals to understand the impact of urban planning decisions on microclimate and integrate them into the operational processes. Considering quantitative research findings as a strong foundation for developing policy recommendations and using them as a guideline may create new opportunities for researchers, practitioners, and policymakers. The study has an original value for exploring design strategies to improve microclimate and promoting sustainable urban development.


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Author Biographies

Deniz Erdem Okumuş, Yıldız Technical University

Deniz Erdem Okumuş, received BSc. degrees in Urban and Regional Planning (2011) and Landscape Architecture (2014), and earned MSc. Degree in Urban Planning (2014) from Istanbul Technical University. Worked as a visiting researcher in the Chair of Design Informatics at Delft University of Technology (2021). Currently conducts PhD research in ITU and works as a Research Assistant at Yildiz Technical University. Major research interests include urban microclimate issues, urban heat island mitigation, urban informatics, GIS, urban design and computational design approaches.

Fatih Terzi, Istanbul Technical University

Prof. Dr. Fatih Terzi, is a faculty member in the department of urban and regional planning at Istanbul Technical University. The area of interest focuses on sustainable urban development, climate responsive design, and eco-smart cities. Fatih Terzi paid a visit to Clemson University, SC, USA, in 2004; the Center for Advanced Spatial Analysis Center (CASA), University College London, in 2008; and the Technology and Community Research Center of the Technical University Berlin in 2017 as a guest researcher. TERZİ, has worked as a researcher in projects supported by the European Union, COST, TUBITAK, and the Development Agency related to sustainable urban development, ecological planning, risk reduction, and quality of life issues. Most recently, he worked as a team co-leader in the "Medium-Term Development Planning and Financing in Five Turkish Metropolitan Cities (Kayseri Muğla Mardin, Malatya, Kahramanmaraş) under the World Bank's "Sustainable Cities Program" being carried out by PWC, funded by the European Union under the leadership of Ilbank.


Alexander, E. R. (1993). Density measures: A review and analysis. Journal of Architectural and Planning Research, 181–202.

Arnfield, A. J. (1990a). Canyon geometry, the urban fabric and nocturnal cooling: a simulation approach. Physical Geography, 11(3), 220–239.

Arnfield, A. J. (1990b). Street design and urban canyon solar access. Energy and Buildings, 14(2), 117–131.

Arnfield, A. J. (2003). Two decades of urban climate research: a review of turbulence, exchanges of energy and water, and the urban heat island. International Journal of Climatology, 23(1), 1–26.

Barsi, J., Schott, J., Hook, S., Raqueno, N., Markham, B., & Radocinski, R. (2014). Landsat-8 thermal infrared sensor (TIRS) vicarious radiometric calibration. Remote Sensing, 6(11), 11607–11626.

Basar, U. G., Kaya, S., & Karaca, M. (2008). Evaluation of urban heat island in Istanbul using remote sensing techniques. Commission VII, WG VII/5. The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 37.

Bektas Balcik, F. (2014). Determining the impact of urban components on land surface temperature of Istanbul by using remote sensing indices. Environmental Monitoring and Assessment, 186(2), 859–872.

Błażejczyk, K., Jendritzky, G., Bröde, P., Fiala, D., Havenith, G., Epstein, Y., … Kampmann, B. (2013). An introduction to the universal thermal climate index (UTCI). Geographia Polonica, 86(1), 5–10.

Bolen, F. (2004). Housing policy and housing systems in Turkey. A| Z ITU Journal of the Faculty of Architecture, 1(1), 14–31.

Ç.Ş.B. (2018). İstanbul İli 2017 Yılı Çevre Durum Raporu. Retrieved from

Chow, W. T. L., Brennan, D., & Brazel, A. J. (2012). Urban heat island research in Phoenix, Arizona: Theoretical contributions and policy applications. Bulletin of the American Meteorological Society, 93(4), 517–530.

Chun, B., & Guldmann, J.-M. (2014). Spatial statistical analysis and simulation of the urban heat island in high-density central cities. Landscape and Urban Planning, 125, 76–88.

Corburn, J. (2009). Cities, climate change and urban heat island mitigation: localising global environmental science. Urban Studies, 46(2), 413–427.

Dihkan, M., Karsli, F., Guneroglu, A., & Guneroglu, N. (2015). Evaluation of surface urban heat island (SUHI) effect on coastal zone: The case of Istanbul Megacity. Ocean & Coastal Management, 118, 309–316.

Erdem Okumus, D., & Terzi, F. (2021). Evaluating the role of urban fabric on surface urban heat island: The case of Istanbul. Sustainable Cities and Society, 73.

Ezber, Y., Sen, O. L., Kindap, T., & Karaca, M. (2007). Climatic effects of urbanization in Istanbul: a statistical and modeling analysis. International Journal of Climatology: A Journal of the Royal Meteorological Society, 27(5), 667–679.

Feng, X., & Myint, S. W. (2016). Exploring the effect of neighboring land cover pattern on land surface temperature of central building objects. Building and Environment, 95, 346–354.

Gago, E. J., Roldan, J., Pacheco-Torres, R., & Ordóñez, J. (2013). The city and urban heat islands: A review of strategies to mitigate adverse effects. Renewable and Sustainable Energy Reviews, 25, 749–758.

Giridharan, R., Lau, S. S. Y., Ganesan, S., & Givoni, B. (2007). Urban design factors influencing heat island intensity in high-rise high-density environments of Hong Kong. Building and Environment, 42(10), 3669–3684.

Guha, S., Govil, H., Dey, A., & Gill, N. (2018). Analytical study of land surface temperature with NDVI and NDBI using Landsat 8 OLI and TIRS data in Florence and Naples city, Italy. European Journal of Remote Sensing, 51(1), 667–678.

Guo, G., Zhou, X., Wu, Z., Xiao, R., & Chen, Y. (2016). Characterizing the impact of urban morphology heterogeneity on land surface temperature in Guangzhou, China. Environmental Modelling & Software, 84, 427–439.

Hamin, E. M., & Gurran, N. (2009). Urban form and climate change : Balancing adaptation and mitigation in the U . S . and Australia. Habitat International, 33(3), 238–245.

He, B.-J., Ding, L., & Prasad, D. (2020a). Relationships among local-scale urban morphology, urban ventilation, urban heat island and outdoor thermal comfort under sea breeze influence. Sustainable Cities and Society, 60, 102289.

He, B.-J., Ding, L., & Prasad, D. (2020b). Urban ventilation and its potential for local warming mitigation: A field experiment in an open low-rise gridiron precinct. Sustainable Cities and Society, 55, 102028.

Hu, Y., White, M., & Ding, W. (2016). An urban form experiment on urban heat island effect in high density area. Procedia Engineering, 169, 166–174.

İ.B.B. (2018). İstanbul Büyükşehir Belediyesi İstanbul İklim Değişikliği Eylem Planı. Retrieved from

IPCC. (2021). Climate Change 2021: The Physical Science Basis. Contribution of Working Group I to the Sixth Assessment Report of the Intergovernmental Panel on Climate Change. Retrieved from

IPCC. (2022). Climate Change 2022: Impacts, Adaptation and Vulnerability. Retrieved from

Jiménez‐Muñoz, J. C., Sobrino, J., Gillespie, A., Sabol, D., & Gustafson, W. (2006). Improved land surface emissivities over agricultural areas using ASTER NDVI. Remote Sensing of Environment, 103(4), 474–487.

Jiménez‐Muñoz, J. C., Sobrino, J., Plaza, A., Guanter, L., Moreno, J., & Martínez, P. (2009). Comparison between fractional vegetation cover retrievals from vegetation indices and spectral mixture analysis: Case study of PROBA/CHRIS data over an agricultural area. Sensors, 9(2), 768–793.

Kaya, S., Basar, U. G., Karaca, M., & Seker, D. Z. (2012). Assessment of urban heat islands using remotely sensed data. Ekoloji, 21(84), 107–113.

Keles, R. (1993). Kentleşme politikası. İmge Kitabevi.

Kleerekoper, L., Van Esch, M., & Salcedo, T. B. (2012). How to make a city climate-proof, addressing the urban heat island effect. Resources, Conservation and Recycling, 64, 30–38.

Knuth, S., Stehlin, J., & Millington, N. (2020). Rethinking climate futures through urban fabrics:(De) growth, densification, and the politics of scale. Urban Geography, 1–9.

Liao, W., Hong, T., & Heo, Y. (2021). The effect of spatial heterogeneity in urban morphology on surface urban heat islands. Energy and Buildings, 244, 111027.

Lin, P., Lau, S. S. Y., Qin, H., & Gou, Z. (2017). Effects of urban planning indicators on urban heat island: a case study of pocket parks in high-rise high-density environment. Landscape and Urban Planning, 168, 48–60.

M.G.M. (2022). General statistical data of the provinces. Retrieved 6 April 2022, from Turkish State Meteorological Service website:

Masoumi, H. E., Terzi, F., & Serag, Y. M. (2019). Neighborhood-scale urban form typologies of large metropolitan areas: Observations on Istanbul, Cairo, and Tehran. Cities, 85, 170–186.

Metz, B., Berk, M., den Elzen, M., de Vries, B., & van Vuuren, D. (2002). Towards an equitable global climate change regime: compatibility with Article 2 of the Climate Change Convention and the link with sustainable development. Climate Policy, 2(2–3), 211–230.

Mirzaei, P. A., & Haghighat, F. (2010). Approaches to study urban heat island–abilities and limitations. Building and Environment, 45(10), 2192–2201.

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.

Oke, T. R. (1982). The energetic basis of the urban heat island. Quarterly Journal of the Royal Meteorological Society, 108(455), 1–24.

Oke, T. R. (1987). Boundary layer climates. Routledge.

Oke, T. R., & Maxwell, G. B. (1975). Urban heat island dynamics in Montreal and Vancouver. Atmospheric Environment (1967), 9(2), 191–200.

Pomponi, F., Saint, R., Arehart, J. H., Gharavi, N., & D’Amico, B. (2021). Decoupling density from tallness in analysing the life cycle greenhouse gas emissions of cities. Npj Urban Sustainability, 1(1), 1–10.

Quattrochi, D. A., & Goel, N. S. (1995). Spatial and temporal scaling of thermal infrared remote sensing data. Remote Sensing Reviews, 12(3–4), 255–286.

Salvati, A., Roura, H. C., & Cecere, C. (2017). Assessing the urban heat island and its energy impact on residential buildings in Mediterranean climate: Barcelona case study. Energy and Buildings, 146, 38–54.

Santamouris, M. (2013). Using cool pavements as a mitigation strategy to fi ght urban heat island — A review of the actual developments. Renewable and Sustainable Energy Reviews, 26, 224–240.

Santamouris, M., Ding, L., & Osmond, P. (2019). Urban Heat Island Mitigation. In Decarbonising the Built Environment (pp. 337–355). Springer.

Scheffe, H. (1953). A method for judging all contrasts in the analysis of variance. Biometrika, 40(1–2), 87–110.

Scheffe, H. (1959). The Analysis of Variance, New York: JohnWiley & Sons. SchefféThe Analysis of Variance1959.

Shishegar, N. (2013). Street Design and Urban Microclimate: Analyzing the Effects of Street Geometryand Orientation on Airflow and Solar Access in Urban Canyons. Journal of Clean Energy Technologies, 1(1).

Sobrino, J. A., Jiménez-Muñoz, J. C., & Paolini, L. (2004). Land surface temperature retrieval from LANDSAT TM 5. Remote Sensing of Environment, 90(4), 434–440.

Song, J., Chen, W., Zhang, J., Huang, K., Hou, B., & Prishchepov, A. V. (2020). Effects of building density on land surface temperature in China: Spatial patterns and determinants. Landscape and Urban Planning, 198, 103794.

Stewart, I. D., & Oke, T. R. (2012). Local climate zones for urban temperature studies. Bulletin of the American Meteorological Society, 93(12), 1879–1900.

Strømann-Andersen, J., & Sattrup, P. A. (2011). The urban canyon and building energy use: Urban density versus daylight and passive solar gains. Energy and Buildings, 43(8).

Sun, Y., Gao, C., Li, J., Wang, R., & Liu, J. (2019). Quantifying the effects of urban form on land surface temperature in subtropical high-density urban areas using machine learning. Remote Sensing, 11(8), 959.

Swart, R., Robinson, J., & Cohen, S. (2003). Climate change and sustainable development: expanding the options. Climate Policy, 3(sup1), S19–S40.

Terzi, F., & Bolen, F. (2009). Urban sprawl measurement of Istanbul. European Planning Studies, 17(10), 1559–1570.

Terzi, F., & Bolen, F. (2012). The potential effects of spatial strategies on urban sprawl in Istanbul. Urban Studies, 49(6), 1229–1250.

U.N. (2015). Transforming Our World:The 2030 Agenda For Sustainable Development. Retrieved from Agenda for Sustainable Development web.pdf

U.N. (2019). The strategic plan 2020-2023. Retrieved from UN Habitat website:

U.N.D.P. (2015). Sürdürülebilir Kalkınma Amaçları. Retrieved from

USGS. (2019). Landsat 8 Data Users Handbook Version 5.0 November 2019. Nasa, 8(November), 97. Retrieved from

Voogt, James A, & Oke, T. R. (1997). Complete urban surface temperatures. Journal of Applied Meteorology, 36(9), 1117–1132.

Voogt, James A, & Oke, T. R. (1998). Effects of urban surface geometry on remotely-sensed surface temperature. International Journal of Remote Sensing, 19(5), 895–920.

Voogt, James A, & Oke, T. R. (2003). Thermal remote sensing of urban climates. Remote Sensing of Environment, 86(3), 370–384.

Voogt, James Adrian. (1995). Thermal remote sensing of urban surface temperatures. University of British Columbia.

Weng, Q. (2009). Thermal infrared remote sensing for urban climate and environmental studies: Methods, applications, and trends. ISPRS Journal of Photogrammetry and Remote Sensing, 64(4), 335–344.

Weng, Q., Lu, D., & Schubring, J. (2004). Estimation of land surface temperature–vegetation abundance relationship for urban heat island studies. Remote Sensing of Environment, 89(4), 467–483.

Wong, N. H., Jusuf, S. K., Syafii, N. I., Chen, Y., Hajadi, N., Sathyanarayanan, H., & Manickavasagam, Y. V. (2011). Evaluation of the impact of the surrounding urban morphology on building energy consumption. Solar Energy, 85(1), 57–71.

Xu, H., & Chen, B. (2004). Remote sensing of the urban heat island and its changes in Xiamen City of SE. Journal of Environmental Sciences, 16(2), 276–281.

Yang, F., Lau, S. S. Y., & Qian, F. (2010). Summertime heat island intensities in three high-rise housing quarters in inner-city Shanghai China: Building layout, density and greenery. Building and Environment, 45(1), 115–134.

Yang, Jun, Jin, S., Xiao, X., Jin, C., Xia, J. C., Li, X., & Wang, S. (2019). Local climate zone ventilation and urban land surface temperatures: Towards a performance-based and wind-sensitive planning proposal in megacities. Sustainable Cities and Society, 47, 101487.

Yang, Junyan, Shi, B., Xia, G., Xue, Q., & Cao, S.-J. (2020). Impacts of Urban form on Thermal Environment near the Surface Region at Pedestrian Height: A Case Study Based on High-density Built-up Areas of Nanjing City in China. Sustainability, 12(5), 1737.

Yang, X., & Li, Y. (2015). The impact of building density and building height heterogeneity on average urban albedo and street surface temperature. Building and Environment, 90, 146–156.

Yilmaz, S., Irmak, M. A., & Qaid, A. (2022). Assessing the effects of different urban landscapes and built environment patterns on thermal comfort and air pollution in Erzurum city, Turkey. Building and Environment, 109210.

Yilmaz, S., Külekçi, E. A., Mutlu, B. E., & Sezen, I. (2021). Analysis of winter thermal comfort conditions: street scenarios using ENVI-met model. Environmental Science and Pollution Research, 28(45), 63837–63859.

Yin, C., Yuan, M., Lu, Y., Huang, Y., & Liu, Y. (2018). Effects of urban form on the urban heat island effect based on spatial regression model. Science of The Total Environment, 634, 696–704.

Zhao, C. (2018). Linking the local climate zones and land surface temperature to investigate the surface urban heat island, a case study of San Antonio, Texas, US. ISPRS Annals of Photogrammetry, Remote Sensing & Spatial Information Sciences, 4(3).

Zheng, Z., Zhou, W., Yan, J., Qian, Y., Wang, J., & Li, W. (2019). The higher, the cooler? Effects of building height on land surface temperatures in residential areas of Beijing. Physics and Chemistry of the Earth, Parts A/B/C, 110, 149–156.

Zhou, W., Huang, G., & Cadenasso, M. L. (2011). Does spatial configuration matter? Understanding the effects of land cover pattern on land surface temperature in urban landscapes. Landscape and Urban Planning, 102(1), 54–63.




How to Cite

Erdem Okumuş, D., & Terzi, F. (2022). Reconsidering Urban Densification for Microclimatic Improvement: Planning and Design Strategies for Istanbul. ICONARP International Journal of Architecture and Planning, 10(2), 660–687.




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