WIT Press

Preliminary Simulation Of A Summer Smog Situation In Switzerland Using The Urban Airshed Model (UAM)

Price

Free (open access)

Paper DOI

10.2495/AIR950401

Volume

9

Pages

8

Published

1995

Size

899 kb

Copyright

WIT Press

Author(s)

S. Andreani-Aksoyoglu, W.R. Graber & J. Keller

Abstract

The photochemical smog situation in Switzerland on July 29, 1993 was simulated using the 3- dimensional grid model UAM (Urban Airshed Model). Results were compared with the field measurements. The calculations showed that ozone formation in Switzerland is mainly NO% limited. However, some areas seem also to be sensitive to VOC emissions. Calculation of dry deposition of the pollutants indicated that most of the Og formed over the Swiss Plateau is deposited in the Alpine regions which have high forest coverage. The impact of biogenic VOC on Og concentrations was predicted to be small (<5%). Their effect on PAN and H2^>2 concentrations however, is found to be significant. 1 Introduction During the last fe

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