Characterizing the spatial dynamics of land surface temperature-impervious surface fraction relationship

Jiong Wang, Zhan Qingming, Huagui Guo, Zhicheng Jin

Research output: Contribution to journalArticleAcademicpeer-review

24 Citations (Scopus)

Abstract

The land surface temperature (LST) pattern is treated as one of the primary indications of environmental impacts of land cover change. Researchers continue to explore the potential contribution of land surface to temperature rising. The LST-land surface relationship is dynamic and varies spatially. Based upon the previous studies, this research assumes that such dynamics is manifested at two levels: (1) the phenomenon level, and (2) its formation mechanism level. The research presents a workflow of exploring such dynamics at both levels. The variogram of the phenomenon and multi-scale analysis of the LST-land surface relationship are mutually interpreted. In the case study of Wuhan, China, the variogram of the LST indicates that the operational scale of the phenomenon is 500–650 m. It suggests the optimal scale to inspect the LST and its cause in the study area. This finding is verified and further inspected through multi-scale analysis of the LST–Impervious Surface Fraction (ISF) relationship at the formation mechanism level. The research also employs the Spatial Autocorrelation model to show how the ISF impacts the LST through scales. A flexible autocorrelation weight matrix is proposed and implemented in the model. The parameters of the model exhibit the thermal sensitivity of land surface and again represent the scale features. The Ordinary Least Square regression is used as the benchmark. Several implications are discussed.
Original languageEnglish
Pages (from-to)55-65
Number of pages11
JournalInternational Journal of Applied Earth Observation and Geoinformation
Volume45
Issue numberpart A
Early online date16 Nov 2015
DOIs
Publication statusPublished - Mar 2016
Externally publishedYes

Keywords

  • Spatial dynamics
  • Scale
  • LST
  • ISF
  • Relationship

Cite this