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A Quantitative Morphological Method for Mapping Local Climate Types

Author

Listed:
  • Daniela Maiullari

    (Department of Urbanism, Delft University of Technology, The Netherlands)

  • Marjolein Pijpers-van Esch

    (Department of Urbanism, Delft University of Technology, The Netherlands)

  • Arjan van Timmeren

    (Department of Urbanism, Delft University of Technology, The Netherlands)

Abstract

Morphological characteristics of cities significantly influence urban heat island intensities and thermal responses to heat waves. Form attributes such as density, compactness, and vegetation cover are commonly used to analyse the impact of urban morphology on overheating processes. However, the use of abstract large-scale classifications hinders a full understanding of the thermal trade-off between single buildings and their immediate surrounding microclimate. Without analytical tools able to capture the complexity of cities with a high resolution, the microspatial dimension of urban climate phenomena cannot be properly addressed. Therefore, this study develops a new method for numerical identification of types, based on geometrical characteristics of buildings and climate-related form attributes of their surroundings in a 25m and 50m radius. The method, applied to the city of Rotterdam, combines quantitative descriptors of urban form, mapping GIS procedures, and clustering techniques. The resulting typo-morphological classification is assessed by modelling temperature, wind, and humidity during a hot summer period, in ENVI-met. Significant correlations are found between the morphotypes’ characteristics and local climate phenomena, highlighting the differences in performative potential between the classified urban patterns. The study suggests that the method can be used to provide insight into the systemic relations between buildings, their context, and the risk of overheating in different urban settings. Finally, the study highlights the relevance of advanced mapping and modelling tools to inform spatial planning and mitigation strategies to reduce the risk of urban overheating.

Suggested Citation

  • Daniela Maiullari & Marjolein Pijpers-van Esch & Arjan van Timmeren, 2021. "A Quantitative Morphological Method for Mapping Local Climate Types," Urban Planning, Cogitatio Press, vol. 6(3), pages 240-257.
    • Handle: RePEc:cog:urbpla:v:6:y:2021:i:3:p:240-257
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    References listed on IDEAS

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    1. Petter Næss & Inger-Lise Saglie & Tim Richardson, 2020. "Urban sustainability: is densification sufficient?," European Planning Studies, Taylor & Francis Journals, vol. 28(1), pages 146-165, January.
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    Cited by:

    1. Thomas Thaler & Patrick A. Witte & Thomas Hartmann & Stan C. M. Geertman, 2021. "Smart Urban Governance for Climate Change Adaptation," Urban Planning, Cogitatio Press, vol. 6(3), pages 223-226.

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