Numerical Studies on Multi-period of Urban Heat Islands Effect during Rapid Urbanization: A Case Study of Shanghai, China (1987 - 2014)

  • Hao GONG, 2014: Numerical Studies on Multi-period of Urban Heat Islands Effect during Rapid Urbanization: A Case Study of Shanghai, China (1987 - 2014) .

Abstract

As one of the most concerned urban climate events, to accurate represent the urban heat islands phenomena from the past scenario to the future scenario is our purpose. To achieve this purpose, a surface-atmospheric coupled model system was established, which included the image classification, urban growth model simulation, calculation of satellite retrieved LST data, calculation of anthropogenic heat flux density and atmospheric model simulation process.

On the other hand, in order to verify the surface-atmospheric coupled model system, as one of the most changed cities in the world Shanghai was selected to test the coupled model. As one of the mainly objective of this study was achieved with the demonstration of the successful coupling two model system to simulate the urban heat islands phenomena for Shanghai during three selected study periods since 1987.

For the results of the model simulation, the urban heat islands phenomena in Shanghai can be excellently represented with the coupled model. Furthermore,the coupled model can provide a spatial-temporal continuity solution to represent the urban heat islands since 30 years ago to recent. Through these analyses, the availability of the methodology was proved. Finally, we can utilize the verified coupled model to evaluate and estimate the urban heat islands effect of other mega cities or metropolitan areas.

Keywords: anthropogenic heat flux, coupled model, land surface temperature, LULC, numerical studies, OBIA, urban growth model, urban heat islands, WRF