HR: 0800h
AN: B41A-0173    [Abstracts]
TI: Low-Dimensional Model for Estimating the Effects of Anthropogenic Heat Sources on Air Temperature
AU: * Cislaghi, M
EM: matteo.cislaghi@polimi.it
AF: DIIAR-Politecnico di Milano, 32, P.zza L. da Vinci, Milano, I-20132 Italy
AU: Katul, G
EM: gaby@duke.edu
AF: Nicholas School of the Environment and Earth Sciences, Duke University, Durham, NC 27708-0328 United States
AU: De Michele, C
EM: carlo.demichele@polimi.it
AF: DIIAR-Politecnico di Milano, 32, P.zza L. da Vinci, Milano, I-20132 Italy
AB: The effects of anthropogenic source on air temperature within urban environments continues to be a fundamental and practical problem in air pollution meteorology and energy research. The approaches employed in the Literature are empirical and utilize statistical comparisons between air temperature series collected within urban environments and outside, or high-resolution regional modeling activities that require significant computational resources and the determination of a large number of parameters. Here, we explore a simplified low-dimensional model that retains the essential physics of surface-atmosphere exchange, boundary layer dynamics, and radiative transfer. It has the decisive advantage of transferability and usability with minimal parameter input or computational resources. Also, because of its simplicity, this low-dimensional model can deconvolve the anthropogenic effects from surface characteristics on mean air temperature traces. The model is applied to the metropolitan area of Milano, Italy. It is able to reproduce well the ensemble of hourly air temperature traces inside the city and outside, and for a wide range of anthropogenic heat source and environmental conditions.
DE: 0478 Pollution: urban, regional and global (0345, 4251)
DE: 0493 Urban systems
SC: Biogeosciences [B]
MN: Fall Meeting 2005