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23 June 2016 Surface urban heat island effect and its relationship with urban expansion in Nanjing, China
Lili Tu, Zhihao Qin, Wenjuan Li, Jun Geng, Lechan Yang, Shuhe Zhao, Wenfeng Zhan, Fei Wang
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Journal of Applied Remote Sensing, Vol. 10, Issue 2, 026037 (June 2016). https://doi.org/10.1117/1.JRS.10.026037
Abstract
Nanjing, a typical megacity in eastern China, has undergone dramatic expansion during the past decade. The surface urban heat island (SUHI) effect is an important indicator of the environmental consequences of urbanization and has rapidly changed the dynamics of Nanjing. Accurate measurements of the effects and changes resulting from the SUHI effect may provide useful information for urban planning. Index, centroid transfer, and correlation analyses were conducted to measure the dynamics of the SUHI and elucidate the relationship between the SUHI and urban expansion in Nanjing over the past decade. Overall, the results indicated that (1) the region affected by the SUHI effect gradually expanded southward and eastward from 2000 to 2012; (2) the centroid of the SUHI moved gradually southeastward and then southward and southwestward, which is consistent with the movement of the urban centroid; (3) the trajectory of the level-3 SUHI centroid did not correspond with the urban mass or SUHI centroids during the study period and (4) the SUHI intensity and urban fractal characteristics were negatively correlated. In addition, we presented insights regarding the minimization of the SUHI effect in cities such as Nanjing, China.
CC BY: © The Authors. Published by SPIE under a Creative Commons Attribution 4.0 Unported License. Distribution or reproduction of this work in whole or in part requires full attribution of the original publication, including its DOI.
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Lili Tu, Zhihao Qin, Wenjuan Li, Jun Geng, Lechan Yang, Shuhe Zhao, Wenfeng Zhan, and Fei Wang "Surface urban heat island effect and its relationship with urban expansion in Nanjing, China," Journal of Applied Remote Sensing 10(2), 026037 (23 June 2016). https://doi.org/10.1117/1.JRS.10.026037
Published: 23 June 2016
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KEYWORDS
Thermal effects
Fractal analysis
Earth observing sensors
Landsat
Data acquisition
Temperature metrology
Lithium
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