Satellite image-based quantitative assessment of surface urban heat island supporting environmental management at the city level
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2017, Vol 10, Issue 3
Abstract
In urban area, one of the great problem is the rise of temperature, which leads to form the urban heat island effect. This paper refers to the urban surface temperature extracted from the satellite images from which to consider changes in the formation of surface urban heat island for Ho Chi Minh city in period 1995-2015. Research has identified land surface temperature from thermal infrared band, according to the ability of the surface emission based on characteristics of normalized difference vegetation index NDVI. The results showed that temperature fluctuated over the city with the spatial gradual expansion of the high temperature zone towards the suburbs. Within 20 years, the formation of surface urban heat island with two typical locations showed a clear difference between the surface temperature of urban and rural areas with spatial expansion of heat island in 4 times in 2015 compared to 1995. An extreme surface urban heat island located in the urban core has an area of approximately 18% compared to the total area of the region. Since then, the solution to mitigate the impact of surface urban heat island has been proposed, in order to protect the urban environment and the lives of residents in Ho Chi Minh City becoming better.
Authors and Affiliations
Tran Thi Van, Ha Duong Xuan Bao, Nguyen Thi Tuyet Mai
Keywords
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