Abstract
A two-dimensional primitive equation model has been used to describe the changes of the fields of horizontal wind, temperature and vertical eddy exchange coefficient and the development and evolution of urban heat island circulation for the thermal and dynamical effects of urbanlization, while the air flows over a city in the nighttime. Because the turbulence and average fluid are in a condition of unbalance to each other, the turbulent energy varies with time. So the equations are closed by introducing the equation of the variable rate of turbulent energy in the model. We are able to obtain the distribution and change of the turbulent energy over the urban area in this way. Finally we examine the effect of urbanization by using the differences of the actual ground pollutant concentration and the vertical distribution of concentration emitted by an elevated pollutant source.
In order to verify this model, the profiles of horizontal velocity and temperature that are predicted by this model are compared with observed data for Changzhou city.
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© 1987 Springer Science+Business Media Dordrecht
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Miao, M. (1987). Numerical Modeling of the Nocturnal PBL over the Urban Heat Island in Changzhou City. In: Beniston, M., Pielke, R.A. (eds) Interactions between Energy Transformations and Atmospheric Phenomena. A Survey of Recent Research. Springer, Dordrecht. https://doi.org/10.1007/978-94-017-1911-7_4
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DOI: https://doi.org/10.1007/978-94-017-1911-7_4
Publisher Name: Springer, Dordrecht
Print ISBN: 978-90-481-8445-3
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