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Journal of Applied Remote Sensing

Dynamic analysis and ecological evaluation of urban heat islands in Raipur city, India
Author(s): Subhanil Guha; Himanshu Govil; Sandip Mukherjee
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Paper Abstract

Spatial–temporal distribution of the urban heat islands (UHI) and their changes over Raipur city have been analyzed using multitemporal Landsat satellite data from 1995 to 2016. Land surface temperature (LST) was retrieved through a mono-window algorithm. Some selected land use/land cover (LU–LC) indices were analyzed with LST using linear regression. The urban thermal field variance index (UTFVI) was applied to measure the thermal comfort level of the city. Results show that during the observed period, the study area experienced a gradual increasing rate in mean LST (<1% per annum). The UHI developed especially along the north-western industrial area and south-eastern bare land of the city. A difference in mean LST between UHI and non-UHI for different time periods (2.6°C in 1995, 2.85°C in 2006, 3.42°C in 2009, and 3.63°C in 2016) reflects the continuous warming status of the city. The LST map also shows the existence of a few urban hot spots near the industrial areas, metal roofs, and high density transport parking lots, which are more abundant in the north-western part of the city. The UTFVI map associated with UHI indicates that the inner parts of the city are ecologically more comfortable than the outer peripheries.

Paper Details

Date Published: 28 August 2017
PDF: 23 pages
J. Appl. Rem. Sens. 11(3) 036020 doi: 10.1117/1.JRS.11.036020
Published in: Journal of Applied Remote Sensing Volume 11, Issue 3
Show Author Affiliations
Subhanil Guha, National Institute of Technology, Raipur (India)
Himanshu Govil, National Institute of Technology, Raipur (India)
Sandip Mukherjee, TERI Univ. (India)

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