[...]... fully-coupled models for meteorological, chemical, physical processes and presents significant challenges in terms of both scientific understanding and computational demand In this work, the history and current status of development and application of on-line models are reviewed Several representative models developed in the US are used to illustrate the current status of on-line coupled models Major challenges and. .. integration of meso-scale meteorological models and atmospheric aerosol and chemical transport models enables the utilization of all meteorological 3D fields in ACTMs at each time step and the consideration of the feedbacks of air pollution (e.g urban aerosols) on meteorological processes and climate forcing Developments in on-line coupled modelling will lead to a new generation of integrated models for... European strategy for integrated meso-scale modelling capabilities The first report of WG2 (Baklanov et al 2007a) compiles existing state -of- the-art methodologies, approaches, models and practices for building integrated (off-line and on-line) meso-scale systems in different, mainly European, countries The report also includes an overview and a summary of existing integrated models and their characteristics... Inverse methods and adjoint models Atmospheric chemistry and transport models Aerosol dynamics models Radiative & optic properties models Ocean dynamics model Cloud condensation nuclei (CCN) model Multi-scale Meteorological/ Climate Models Ecosystem models Integrated Assessment Model Fig 1.2 The integrated system structure for studies of the meso-scale meteorology and air pollution, and their interaction... approaching meso- and city-scale resolution (due to advances in computing power) and the use of land-use databases and remote sensing data with finer resolution, this situation is changing As a result the conventional concepts of meso- and urban-scale air pollution forecasting need revision along the lines of integration of meso-scale meteorological models (MetMs) and atmospheric chemical transport models (ACTMs)... different MetMs/NWP models and ACTMs Such a strategy may only be realised through jointly agreed specifications of module structure for easy-to-use interfacing and integration The overall aim of working group 2 (WG2) of the COST 728 Action, Integrated systems of MetM and ACTM: strategy, interfaces and module unification”, is to identify the requirements for the unification of MetM and ACTM modules and to propose... challenges and recommendations for future development and improvement of on-line- coupled models are provided Y Zhang Department of Marine, Earth and Atmospheric Sciences, North Carolina State University, Raleigh, NC 27695, USA e-mail: yang_zhang@ncsu.edu A Baklanov et al (eds.), Integrated Systems of Meso-Meteorological and Chemical Transport Models, DOI 10.1007/978-3-642-13980-2_2, # Springer-Verlag... (Textor et al 2006; Ghan and Easter 2006), and the Caltech unified GCM (Liao et al 2003; Liao and Seinfeld 2005) All these models predict gases, aerosols, and clouds with varying degrees of complexities in chemical mechanisms and aerosol/cloud microphysics The history and current status of these models along with other relevant models are reviewed below Jacobson (1994, 1997a, b) and Jacobson et al (1996)... a quite surprising number of on-line coupled MetM and ACTM systems already being used in Europe However, many of the on-line coupled models were not built for the meso-meteorological scale, and they (e.g GME, ECMWF C-IFS, MESSy) are global-scale modelling systems and first of all designed for climate change modelling Besides, at the current stage most of the on-line coupled models do not consider feedback... Toronto, University of British Columbia, Canada, and Warsaw University of Technology, Poland) GEM/LAM-AQ (York Univ, Toronto, University of British Columbia, Canada, and Warsaw University of Technology, Poland) WRF-CHem: Weather Research and Forecast and Chemistry Community modelling system (NCAR and many other organisations) MESSy: ECHAM5-Lokalmodell LM planned at MPI-C Mainz, Univ of Bonn, Germany However, . Integrated Systems of Meso-Meteorological and Chemical Transport Models . Alexander Baklanov l Alexander Mahura l Ranjeet S. Sokhi Integrated Systems of Meso-Meteorological and. Introduction – Integrated Systems: On-line and Off-line Coupling of Meteorological and Air Quality Models, Advantages and Disadvantages 1 Alexander Baklanov Part