Sky view factor and the heat island effect in Valparaiso
Keywords:
heat island, climate, urban morphology, urban fabric, urban planningAbstract
Urban form transforms territory and its climatic behavior. The morphology of a city varies from its centers to its periphery, as do population density, the temporal use of buildings, the presence or absence of vegetation and transport density. These variables condition the thermal behavior of public spaces. Sky View Factor (SVF) is defined by taking into account sky visibility from an urban canyon, which is related to the thermal storage and ventilation of street space. Both variables are key to pedestrian comfort and city warming. This paper presents climate performance data associated with the morphology of the city of Valparaíso, which has a coastal Mediterranean climate. Simultaneous climate measurements were taken in different parts of the city. These were then correlated with the geometric and material parameters of the locations studied. A close relationship was found between urban morphology, the thermal behavior of public spaces and an increased temperature favoring the urban heat island phenomenon (UHI). This data would make it possible to more accurately predict street level climate conditions and how they affect the UHI.
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