Tracking the spatial evolution of urban heat islands

Authors: Zhu, Rui; Guilbert, Eric; Wong, Man Sing
Abstract: The urban heat island (UHI) phenomenon occurring in the urban areas or city-clusters is increasingly becoming a severe problem in the urbanization process. Previous research mainly rely on grid analysis techniques to study temperature data from images recorded at fixed time instants. The evolutionary process of UHI in both time and space has not been investigated yet. This research designs an object-oriented spatiotemporal model to reconstruct the evolution of UHI and provide a qualitative interpretation. Each UHI is modeled as a spatiotemporal field object with it own life cycle. Dynamic behavior of an UHI is defined by sequences of spatial changes (e.g. contraction or expansion) and topological transformations (e.g. merge or split). The model is implemented in an object-relational database and applied to air temperature data collected from weather stations every hour over three days. UHIs with their behavior were extracted from the data. Results suggest that the model can effectively track and provide a qualitative description of the UHI evolution.
Document Type: Article de recherche
Issue Date: 2 June 2016
Open Access Date: 11 May 2017
Document version: VoR
This document was published in: ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol. III-2, 3–8 (2016)
Alternative version: 10.5194/isprs-annals-III-2-3-2016
Collection:Articles publiés dans des revues avec comité de lecture

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