Pollutant dispersion in the atmosphere

The activity of the group in this field is relative both to the implementation and to the application of numerical simulation codes devoted to the study of the dispersion in atmosphere of both gaseous and particulate pollutant emitted by anthropogenic and biogenic sources.

The following codes are used to evaluate and calculate the emission values and to prepare emission datasets and inputs for the main dispersion codes:

        NEMO (Natural Emission MOdel), elaborated by the Atmospheric Physics group of the Aristotle University of Thessaloniki (AUTH), which calculates natural emission values processing meteorological inputs given by the WRF model

        SMOKE (Sparse Matrix Operator Kernel Emission), which is a freeware code developed by EPA (Environmental Proctecion Agency) for the preprocessing of emission data and the preparation of inputs for atmospheric dispersion codes

The following codes are now in use for the simulation of atmospheric dispersion:

        CAMx (Comprehensive Air-quality Modeling with Extensions), an Eulerian photochemical dispersion model developed by Environ corp. and freely available for research purposes, which allows for the study and analysis of gaseous and particulate pollutant ranging from regional to local scales (a 1-km spatial resolution can be reached)

       ADMS 4.2 (Atmospheric Dispersion Modeling System), a gaussian transport model elaborated by CERC (Cambridge Environmental Research Consultants) for dispersion and diffusion simulation at the microscale, optimized for single source scenarios (or group of sources).


The ability to a combined use of all of the aforementioned codes (or part of them), linked to mteorological pre-processors, allows for a complete and detailed analysis of the atmospheric dispersion of pollutants and for the assessment of air quality over domains of a wide range of dimensions and resolutions.