Atmospheric Chemistry and Physics Discussions www.atmos-chem-phys-discuss.net 1680-7367 1680-7375 5 6 2005 10.5194/acpd-5-11183-2005 http://www.atmos-chem-phys-discuss.net/5/11183/2005/ http://www.atmos-chem-phys-discuss.net/5/11183/2005/acpd-5-11183-2005.html http://www.atmos-chem-phys-discuss.net/5/11183/2005/acpd-5-11183-2005.pdf 11183 11213 2005-11-02 Large eddy simulation of urban features for Copenhagen metropolitan area A. Mahura ama@dmi.dk S. Leroyer P. Mestayer I. Calmet S. Dupont N. Long A. Baklanov C. Petersen K. Sattler N. W. Nielsen Laboratoire de Mécanique des Fluides, UMR CNRS 6598, Ecole Centrale de Nantes, ECN, France Danish Meteorological Institute, DMI, Copenhagen, Denmark Institute of Northern Environmental Problems, Kola Science Center, Apatity, Russia EPHYSE, Institut National de la Recherche Agronomique, Bordeaux, France The large eddy simulations employing the SUBMESO model with the urban soil layer model SM2-U were performed for the model domain covering the Danish Island of Sealand and including the Copenhagen metropolitan area. Monthly and diurnal cycle variability were studied for the net radiation, sensible and storage heat fluxes, surface's temperatures, and others. These were evaluated for selected urban vs. non urban related types of covers/surfaces and urban districts such as city center, high buildings, industrial, and residential. Results showed strong effects of urban features on temporal and spatial variability. They are useful and applicable for verification of numerical weather prediction models and development of urban canopy parameterizations.