Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XXXIX-B8, 131-136, 2012
https://doi.org/10.5194/isprsarchives-XXXIX-B8-131-2012
© Author(s) 2012. This work is distributed under
the Creative Commons Attribution 3.0 License.
 
28 Jul 2012
AN INVESTIGATION OF LOCAL EFFECTS ON SURFACE WARMING WITH GEOGRAPHICALLY WEIGHTED REGRESSION (GWR)
Y. Xue2,1, T. Fung2, and J. Tsou3 1Satellite Surveying and Mapping Application Center, National Administration of Surveying, Mapping and Geoinformation, P.R.China
2Department of Geography and Resource Management, the Chinese University of Hong Kong, Shatin, Hongkong SAR, P.R.China
3School of Architecture, the Chinese University of Hong Kong, Shatin, Hongkong SAR, P.R.China
Keywords: Urban Warming, Thermal Landscape, Geographically Weighted Regression (GWR), Thermal Infrared Remote Sensing, ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) Abstract. Urban warming is sensitive to the nature (thermal properties, including albedo, water content, heat capacity and thermal conductivity) and the placement (surface geometry or urban topography) of urban surface. In the literature the spatial dependence and heterogeneity of urban thermal landscape is widely observed based on thermal infrared remote sensing within the urban environment. Urban surface warming is conceived as a big contribution to urban warming, the study of urban surface warming possesses significant meaning for probing into the problem of urban warming.The urban thermal landscape study takes advantage of the continuous surface derived from thermal infrared remote sensing at the landscape scale, the detailed variation of local surface temperature can be measured and analyzed through the systematic investigation. At the same time urban environmental factors can be quantified with remote sensing and GIS techniques. This enables a systematic investigation of urban thermal landscape with a link to be established between local environmental setting and surface temperature variation. The goal of this research is utilizing Geographically Weighted Regression (GWR) to analyze the spatial relationship between urban form and surface temperature variation in order to clarify the local effects on surface warming, moreover to reveal the possible dynamics in the local influences of environmental indicators on the variation of local surface temperature across space and time. In this research, GWR analysis proved that the spatial variation in relationships between environmental setting and surface temperature was significant with Monte Carlo significance test and distinctive in day-night change. Comparatively, GWR facilitated the site specific investigation based on local statistical technique. The inference based on GWR model provided enriched information regarding the spatial variation of local environment effect on surface temperature variation which global model cannot approach.
Conference paper (PDF, 718 KB)


Citation: Xue, Y., Fung, T., and Tsou, J.: AN INVESTIGATION OF LOCAL EFFECTS ON SURFACE WARMING WITH GEOGRAPHICALLY WEIGHTED REGRESSION (GWR), Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XXXIX-B8, 131-136, https://doi.org/10.5194/isprsarchives-XXXIX-B8-131-2012, 2012.

BibTeX EndNote Reference Manager XML