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Advances in Meteorology
Volume 2017, Article ID 8917310, 18 pages
https://doi.org/10.1155/2017/8917310
Research Article

Seasonal Variations of the Urban Thermal Environment Effect in a Tropical Coastal City

1State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China
2Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
3University of Chinese Academy of Sciences, Beijing 100049, China
4Faculty of Environmental Sciences, University of Lay Adventists of Kigali (UNILAK), P.O. Box 6392, Kigali, Rwanda
5Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100094, China

Correspondence should be addressed to Qian Jing; nc.ca.tais@naiq.gnij

Received 1 June 2017; Revised 4 September 2017; Accepted 11 October 2017; Published 12 November 2017

Academic Editor: Jorge E. Gonzalez

Copyright © 2017 Yao Yuan et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Shenzhen city was selected to analyze the Surface Urban Heat Island (SUHI) variations based on land surface temperature (LST) in four different seasons of 2015. UHI intensity (UHII) as an indicator of SUHI was established and the method of density segmentation was utilized to classify the SUHI after LSTs were normalized. The gravity center model of UHII and Moran’s (a spatial autocorrelation index) were used to analyze the spatiotemporal variations of SUHI. Results indicated that LST was higher in the west than in the east of the city. The values of UHII were higher in spring and summer and lower in autumn and winter. Five profiles were drawn to analyze the distribution of UHII in different seasons, and it was found that the No. 1 path profiles, corresponding to the western urban development axis, had higher UHII than other path profiles. The center of UHII gravity shifts converged in the Longhua, Baoan, and Nanshan Districts throughout the four seasons and Moran’s values were higher in summer and spring. From the UHII’s spatial distribution pattern analysis, a spatially discontinuous pattern was observed in four seasons; there was a compact pattern of high temperature zones.