HR: 1340h
AN: A53C-1346    [Abstracts]
TI: GEM-AQ, an On-line Global Multiscale Chemical Weather System: Model Description and Evaluation of Gas Phase Chemistry Processes
AU: Neary, L
EM: lori@yorku.ca
AF: York University, 4700 Keele St., Toronto, M3J 1P3, Canada
AU: Kaminski, J W
EM: jacek@yorku.ca
AF: York University, 4700 Keele St., Toronto, M3J 1P3, Canada
AU: Struzewska, J
EM: joanna.struzewska@is.pw.edu.pl
AF: Warsaw University of Technology Institute of Environmental Engineering Systems, Pl. Politechniki 1, Warsaw, 00-661, Poland
AU: Ainslie, B
EM: bainslie@eos.ubc.ca
AF: University of British Columbia, 2329 West Mall, Vancouver, V6T 1Z4, Canada
AU: * McConnell, J C
EM: jcmcc@yorku.ca
AF: York University, 4700 Keele St., Toronto, M3J 1P3, Canada
AB: Tropospheric chemistry and air quality processes were implemented on-line in the Global Environmental Multiscale model. The integrated model, GEM-AQ, has been developed as a platform to investigate chemical weather at scales from global to urban. On the global scale, the model was exercised for five years (2001-2005) to evaluate its ability to simulate seasonal variations and regional distributions of trace gases such as ozone, nitrogen dioxide and carbon monoxide. The model results are compared with observations from satellites, aircraft measurement campaigns and balloon sondes. The same model has also been evaluated on the regional (~15km resolution) and urban scale (~3km resolution). A simulation of the formation and transport of photooxidants during the European heat wave of 2006 was performed and compared with surface observations throughout central and eastern Europe. The complex topographic region of the Lower Fraser Valley in British Columbia was the focus of another model evaluation during the PACIFIC 2001 field campaign. Comparison of model results with observations during this period will be shown.
DE: 0365 Troposphere: composition and chemistry
DE: 0368 Troposphere: constituent transport and chemistry
SC: Atmospheric Sciences [A]
MN: 2007 Fall Meeting