Advances in Science and Research www.adv-sci-res.net 1992-0628 1992-0636 3 8th EMS Annual Meeting and 7th European Conference on Applied Climatology 2008 2009 10.5194/asr-3-53-2009 http://www.adv-sci-res.net/3/53/2009/ http://www.adv-sci-res.net/3/53/2009/asr-3-53-2009.html http://www.adv-sci-res.net/3/53/2009/asr-3-53-2009.pdf 53 57 2009-04-15 Multi-scale atmospheric environment modelling for urban areas A. A. Baklanov R. B. Nuterman Danish Meteorological Institute, Copenhagen, Denmark Tomsk State University, Tomsk, Russia Modern supercomputers allow realising multi-scale systems for assessment and forecasting of urban meteorology, air pollution and emergency preparedness and considering nesting with obstacle-resolved models. A multi-scale modelling system with downscaling from regional to city-scale with the Environment – HIgh Resolution Limited Area Model (Enviro-HIRLAM) and to micro-scale with the obstacle-resolved Micro-scale Model for Urban Environment (M2UE) is suggested and demonstrated. The M2UE validation results versus the Mock Urban Setting Trial (MUST) experiment indicate satisfactory quality of the model. Necessary conditions for the choice of nested models, building descriptions, areas and resolutions of nested models are analysed. Two-way nesting (up- and down-scaling), when scale effects both directions (from the meso-scale on the micro-scale and from the micro-scale on the meso-scale), is also discussed. Baklanov, A., Korsholm, U., Mahura, A., Petersen, C., and Gross, A.: ENVIRO-HIRLAM: on-line coupled modelling of urban meteorology and air pollution, Adv. Sci. Res., 2, 41–46, 2008. Di Sabatino S., Buccolieri, R., Olesen, H., Ketzel, M., Berkowicz, R., Franke, J., Schatzmann, M., Schlunzen, H., Britter, R., Borrego, C., Costa, A. M., Castelli, S. T., Reisin, T., Hellsten, A., Saloranta, J., Moussiopoulos, N., Barmpas, F., Brzozowski, K., Goricsan, I., Balczo, M., Bartzis, J., Efthimiou, G., Santiago, J. L., Martilli, A., Piringer, M., Hirtl, M., Baklanov, A., Nuterman, R., and Starchenko, A.: COST 732 in practice: the MUST model evaluation exercise, Int. J. Environ. Pollut., in press, 2009. EMS-FUMAPEX: Urban Meteorology and Atmospheric Pollution, edited by: Baklanov, A., Joffre, S., and Galmarini, S., Special Issue, Atmos. Chem. Phys., http://www.atmos-chem-phys.net/special_issue24.html, 2005. Grell, G. A., Dudia, J, and Stauffer, D. R.: A description of the fifth generation Penn State/NCAR Mesoscale Model (MM5), NCAR, Tech. Note NCAR/TN-398 + STR, 1994. Jacobs, H. J., Feldmann, H., Hass, H., and Memmesheimer, M.: The use of nested models for air pollution studies: An application of the EURAD model to a SANA episode, J. Appl. Met., 34, 1301–1319, 1995. Korsholm, U. S., Baklanov, A., Gross, A., and Sørensen, J. H.: On the importance of the meteorological coupling interval in dispersion modeling during ETEX-1, Atmos. Environ., doi:10.1016/j.atmosenv.2008.11.017, 2008. Kunz, R., Khatib, I., and Moussiopoulos, N.: Coupling of mesoscale and microscale models – an approach to simulate scale interaction, Environ. Modell. Softw., 15, 597–602, 2000. Martilli, A., Clappier, A., and Rotach, M. W.: An Urban Surface Exchange Parameterisation for Mesoscale Models, Bound.-Lay. Meteorol., 104, 261–304, 2002. Martilli, A. and Santiago, J. L.: CFD simulation of airflow over a regular array of cubes. Part II: analysis of spatial average properties, Bound.-Lay. Meteorol., 122, 635–654, 2007. Nuterman, R. B., Starchenko, A. V., and Baklanov, A. A.: Development and evaluation of a microscale meteorological model for investigation of airflows in urban terrain, J. Computational Technologies, 13(3), 37–43, 2008.