Object-core oriented data modelling for tracking of behaviors of urban heat Islands

R. Zhu, E. Guilbert, M. S. Wong

Research output: Journal article publicationConference articleAcademic researchpeer-review

Abstract

Modeling thematic and spatial dynamic behaviors of Urban Heat Islands (UHIs) over time is crucial to understand the evolution of this phenomenon and the city micro-climate. Previous studies conceptualized that a UHI can only have a single life period with spatial behaviors (i.e. areal changes and topological transformations). However, a UHI can also appear and disappear periodically several times expressed by thematic and spatial integrated behaviors, which has not been established yet. Thus, this study conceptualizes each UHI as an object which has thematic and spatial behaviors simultaneously and proposes several graphs to depict periodic life-time transitions triggered by the behaviors. The model was implemented in an object-relational database, and air temperatures collected from a number of weather stations were interpolated as temperature images each hour for six weeks. Results indicated that the model could track the spatial and thematic evolution of UHIs through continuous time effectively, and also revealed the periodical patterns and abnormal cases of UHIs over a city.

Original languageEnglish
Pages (from-to)143-149
Number of pages7
JournalInternational Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences - ISPRS Archives
Volume42
Issue number4
DOIs
Publication statusPublished - 19 Sep 2018
EventISPRS TC IV Mid-Term Symposium on 3D Spatial Information Science - The Engine of Change - Delft, Netherlands
Duration: 1 Oct 20185 Oct 2018

Keywords

  • Database management system
  • Geographical information science
  • Remote sensing
  • Spatiotemporal data modeling
  • Urban heat Islands

ASJC Scopus subject areas

  • Information Systems
  • Geography, Planning and Development

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