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Analysis of Rivers’ Hidden Cooling Potential on a River Front City- a Case Study on Vijayawada City, Andhra Pradesh, India
Haripavan Nekkanti
Analysis of Rivers’ Hidden Cooling Potential on a River Front City- a Case Study on Vijayawada City, Andhra Pradesh, India - p59–69
The importance in studying issues like heat waves, urban heat islands, and polluted air, is on the rise in the perspective of global warming. One effective method to mitigate the hot climate in urban areas is by harnessing the cooling effect of rivers. This study aims to examine the impact of the Krishna River on its surrounding urban environment by utilizing geospatial techniques in identifying and analysing the surface temperature and urban morphology data. Additionally, it seeks to explore the potential of rivers in cooling urban areas using linear regression models. The findings of this study indicate the following key points. Initially, it is noteworthy that aqueous entities possess a cooling impact on the adjacent environment. The maximum range of this cooling influence is observable at 2,000 m, while the most favourable distance is at 1200–1400 m. Since the stretch of the river in the study area was divided with a barrage as upstream and downstream, the river cooling effect is clear in the upstream side as it contains water when compared to the downstream side with dry sand. The findings indicate a correlation between elevation in the Normalised Difference Vegetation Index and a reduction in Land Surface Temperature (LST), as evidenced by negative correlation. Moreover, an elevation in the Built-Up Index results in reduction in Land Surface Temperature (LST) values. With regards to the Sky View Factor, it is generally observed that higher values are associated with elevated Land Surface Temperature (LST), except in regions where air circulation is enhanced, leading to a reduction in temperatures. The results give the view over possibility of measures that can be itaken to sustain the urban environment and reduce the impact of the heat island effect. Examples include increasing the amount of urban vegetation and reducing the density of buildings. The findings of this study provide important empirical facts and instructive examples to support the efforts of urban planning and development organizations in improving the urban environment and creating sustainable urban habitats.
Environmental Physics
Environmental Sciences
Environmental Geography
Geography
Physical Geography
Urban Ecology
Analysis of Rivers’ Hidden Cooling Potential on a River Front City- a Case Study on Vijayawada City, Andhra Pradesh, India - p59–69
The importance in studying issues like heat waves, urban heat islands, and polluted air, is on the rise in the perspective of global warming. One effective method to mitigate the hot climate in urban areas is by harnessing the cooling effect of rivers. This study aims to examine the impact of the Krishna River on its surrounding urban environment by utilizing geospatial techniques in identifying and analysing the surface temperature and urban morphology data. Additionally, it seeks to explore the potential of rivers in cooling urban areas using linear regression models. The findings of this study indicate the following key points. Initially, it is noteworthy that aqueous entities possess a cooling impact on the adjacent environment. The maximum range of this cooling influence is observable at 2,000 m, while the most favourable distance is at 1200–1400 m. Since the stretch of the river in the study area was divided with a barrage as upstream and downstream, the river cooling effect is clear in the upstream side as it contains water when compared to the downstream side with dry sand. The findings indicate a correlation between elevation in the Normalised Difference Vegetation Index and a reduction in Land Surface Temperature (LST), as evidenced by negative correlation. Moreover, an elevation in the Built-Up Index results in reduction in Land Surface Temperature (LST) values. With regards to the Sky View Factor, it is generally observed that higher values are associated with elevated Land Surface Temperature (LST), except in regions where air circulation is enhanced, leading to a reduction in temperatures. The results give the view over possibility of measures that can be itaken to sustain the urban environment and reduce the impact of the heat island effect. Examples include increasing the amount of urban vegetation and reducing the density of buildings. The findings of this study provide important empirical facts and instructive examples to support the efforts of urban planning and development organizations in improving the urban environment and creating sustainable urban habitats.
Environmental Physics
Environmental Sciences
Environmental Geography
Geography
Physical Geography
Urban Ecology