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During the last decade, the efforts in the field of atmospheric modeling have been directed towards a joint ‘online’ approach of the meteorological and chemical processes in order to treat, in an integrated way, their complex and interactive links. This approach allows for the use of all meteorological fields as input in the chemical submodel, at each model time step, as well as takes into consideration the concentration of the pollutants on the meteorological processes (radiation and cloud microphysics). In this work, the air pollution over East Mediterranean is assessed with the use of the fully coupled, two-way interactive modeling system ICLAMS. Simulations have been performed for several test cases enhancing on the feedback mechanisms that occur. The summer case (July 2005) is used as base evaluation case due the increased insolation and high photolytic activity. The ozone model results are compared with measurements from stations from the European Monitoring and Evaluation Programme (EMEP). The correlation coefficient over all model domain reaches 0.7 with a root mean square error 22.78 μg/m3 and mean bias 0.74 μg/m3. The spring case (April 2004) highlights on the impact of mineral dust and sea salt on the photolysis rates that in turn determine the concentration of ozone in the area. The presence of dust over Finokalia station (Crete, Greece) leads to a decrease in the photolysis rates of NO2 and O3. Another winter case has also been discussed regarding the role of anthropogenic aerosols on clouds and precipitation.
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- An Online Coupled Two Way Interactive Modelling Study of Air Pollution Over Europe and Mediterranean
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- Chapter 47
Systemische Notwendigkeit zur Weiterentwicklung von Hybridnetzen