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Remote Sens. 2017, 9(3), 250; doi:10.3390/rs9030250

The Impact of Energy Consumption on the Surface Urban Heat Island in China’s 32 Major Cities

1,2
,
1,2,* , 1,2,3,4
and
1,2
1
School of Geography and Planning, Sun Yat-sen University, Guangzhou 510275, China
2
Guangdong Key Laboratory for Urbanization and Geo-Simulation, Sun Yat-sen University, Guangzhou 510275, China
3
Department of Water Resources and Environment, Sun Yat-sen University, Guangzhou 510275, China
4
Key Laboratory of Water Cycle and Water Security in Southern China of Guangdong High Education Institute, Sun Yat-sen University, Guangzhou 510275, China
*
Author to whom correspondence should be addressed.
Academic Editors: Bailang Yu, Yuyu Zhou, Chunyang He, Xiaofeng Li, Soe Myint and Prasad S. Thenkabail
Received: 30 December 2016 / Revised: 23 February 2017 / Accepted: 6 March 2017 / Published: 8 March 2017
(This article belongs to the Special Issue Recent Advances in Remote Sensing with Nighttime Lights)
View Full-Text   |   Download PDF [5225 KB, uploaded 8 March 2017]   |  

Abstract

Supported by the rapid economic development in the last few decades, China has become the largest energy consumer in the world. Alongside this, the effect of the anthropogenic heat released from energy consumption is increasingly apparent. We quantified the daytime and nighttime surface urban heat island intensity (SUHII) for the 32 major cities in mainland China, using MODIS land surface temperature data from 2008 to 2012, and estimated the energy consumption intensity (ECI) based on the correlation between energy consumption and the sum of nighttime lights. On this basis, the impact of energy consumption on the surface urban heat island in China’s 32 major cities was analyzed, by directly examining the relationship between SUHII and the urban-suburban difference in ECI. The results show that energy consumption has a significantly positive correlation with the nighttime SUHII, but no correlation with the daytime SUHII. It indicates that the cities with a larger urban-suburban difference in ECI have a far greater impact on SUHII during the nighttime. Therefore, the statistical analysis of the historical observation data in this study provides evidence for a long-held hypothesis that the anthropogenic heat released from energy consumption is an important contributor to the urban thermal environment. View Full-Text
Keywords: energy consumption; surface urban heat island; nighttime light; land surface temperature; daytime; nighttime energy consumption; surface urban heat island; nighttime light; land surface temperature; daytime; nighttime
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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. (CC BY 4.0).

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Liao, W.; Liu, X.; Wang, D.; Sheng, Y. The Impact of Energy Consumption on the Surface Urban Heat Island in China’s 32 Major Cities. Remote Sens. 2017, 9, 250.

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