Air Pollution Processes in Regional Scale Domänen und Forsten After the catastrophic Ariane 5 accident January 2007 A After the catastrophic Ariane 5 accident on 4 June 1996 which destroyed the four Cluster spacecraft weltweit operierenden Untemehmen mit 800 Gesellschaften und 40 Untemehmensbereichen in gut 150 Landem mit 160 000 Mitarbeitem und rund 24 Milliarden Schweizer Franken Umsatz The book therefore discusses the physical and chemical processes that determine regional air pollution and presents the relevant modeling techniques to describe the different atmospheric processes that are active at that scale Numerical modeling is the most efficient way to determine the atmospheric transport