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J Air Waste Manag Assoc

Title:		Comparison of two photochemical modeling systems in a tropical urban area
Author(s):		Zhang B; Vautard R; Oanh NT;
Address:		"Environmental Engineering and Management, School of Environment, Resources and Development, Asian Institute of Technology, Pathumthani, Thailand. b2zhang@scimail.uwaterloo.ca"
Journal Title:		J Air Waste Manag Assoc
Year:		2005
Volume:		55
Issue:		7
Page Number:		903 - 918
DOI:		10.1080/10473289.2005.10464700
ISSN/ISBN:		1096-2247 (Print) 1096-2247 (Linking)
Abstract:		"Two photochemical smog modeling systems, UAM-V/ SAIMM (the Variable-Grid UAM/Systems Applications International Mesoscale Model) and CHIMERE/ECMWF (European Center for Medium Range Weather Forecast), are applied to the same tropical domain (Bangkok Metropolitan Region) and the same episode (January 13-14, 1997) to evaluate their relative performance using the same anthropogenic emission database (emission database available at the Pollution Control Department [PCD] 1997). Ozone (O3) produced by both models meets U.S. Environment Protection Agency (EPA) suggested prediction criteria of mean normalized bias error and mean normalized gross error on January 14 but none on January 13. Both models are tested with various modified databases of precursors emissions from the PCD original database. Performance of UAM-V is the best when using the modified emission data with volatile organic compound (VOC), NOx, and CO mobile source emission reduced by 50%, 50%, and 20% from the original database. CHIMERE suggests a similar emission database except for the VOC emission, which is a reduction by 40% from the original PCD mobile source emission. Spatial and temporal variations of O3, CO, NOy (total reactive nitrogen), and Ox (NO2+O3) predicted by both model systems using the modified"
Keywords:		"Cities *Models, Theoretical Photochemistry *Smog *Tropical Climate;"
Notes:		"MedlineZhang, Baoning Vautard, Robert Oanh, Nguyen Thi Kim eng Comparative Study Evaluation Study Research Support, Non-U.S. Gov't 2005/08/23 J Air Waste Manag Assoc. 2005 Jul; 55(7):903-18. doi: 10.1080/10473289.2005.10464700"