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The Impact of Central Heating on the Urban Thermal Environment Based on Multi-Temporal Remote Sensing Images

Authors :
Xinran Chen
Xingfa Gu
Yulin Zhan
Dakang Wang
Yazhou Zhang
Faisal Mumtaz
Shuaiyi Shi
Qixin Liu
Source :
Remote Sensing; Volume 14; Issue 10; Pages: 2327
Publication Year :
2022
Publisher :
Multidisciplinary Digital Publishing Institute, 2022.

Abstract

Research on the impact of anthropogenic heat discharge in a thermal environment is significant in climate change research. Central heating is more common in the winter in Northeast China as an anthropogenic heat. This study investigates the impact of central heating on the thermal environment in Shenyang, Changchun, and Harbin based on multi-temporal land surface temperature retrieval from remote sensing. An equivalent heat island index method was proposed to overcome the problem of the method based on a single-phase image, which cannot evaluate all the central heating season changes. The method improves the comprehensiveness of a thermal environment evaluation by considering the long-term heat accumulation. The results indicated a significant increase in equivalent heat island areas at night with 22.1%, 17.3%, and 19.5% over Shenyang, Changchun, and Harbin. The increase was significantly positively correlated with the central heating supply (with an R-value of 0.89 for Shenyang, 0.93 for Changchun, and 0.86 for Harbin; p < 0.05). The impact of central heating has a more significant effect than the air temperature. The results provide a reference for future studies of urban thermal environment changes.

Details

Language :
English
ISSN :
20724292
Database :
OpenAIRE
Journal :
Remote Sensing; Volume 14; Issue 10; Pages: 2327
Accession number :
edsair.doi.dedup.....dfbf4feb60ff153bb63d59fd491b4796
Full Text :
https://doi.org/10.3390/rs14102327