Study of urban heat island and its interplay with impervious surface in Dongguan, China

Impervious surface which is almost never affected by seasonal variations is a key indicator of urban expansion and urban heat island effect. In this study, we employ a new integrated enhancing index to extract impervious surfaces and compare the results with those retrieved by other existing spectra...

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Bibliographic Details
Main Authors: Ya Ma, Aimin Liu, Gaodi Xie, Yi Zou, Wenli Qiang
Format: Conference Proceeding
Language:English
Subjects:
Correlation
Indexes
Land surface
Land surface temperature
Noise measurement
Percent impervious surface
Remote sensing
surface biophysical parameter
Thermal pollution
TM image
Urban heat island
Online Access:Request full text
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Summary:Impervious surface which is almost never affected by seasonal variations is a key indicator of urban expansion and urban heat island effect. In this study, we employ a new integrated enhancing index to extract impervious surfaces and compare the results with those retrieved by other existing spectral indices. The results show that the new integrated enhancing index can mitigate background noises effectively and achieve satisfactory accuracy. The land surface temperatures (LSTs) are also retrieved from thermal infrared bands of two TM datasets. And the relationships between impervious surfaces and LSTs are then analyzed. Results indicate that LSTs possess a strong positive correlation with percent impervious surfaces at regional-scale. The findings can definitely reveal the correlation of impervious surfaces and urban heat island (UHI) and provide a reference for the urban ecological environment protection.
ISSN:2153-6996
2153-7003
DOI:10.1109/IGARSS.2012.6351731