Summertime climatology of ozone with a column version of a regional circulation model

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:466112

Bouchet, V; Torlasche, E; Laprise, R ^[1]; McConnell, J C ^[2]

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1. Univ. of Quebec, Montreal (Canada)
2. York Univ., North York, Ontario (Canada)

Photochemical pollution in the Windsor-Quebec Corridor is a topic of concern as it is the region of Canada where ozone excursions above the maximum acceptable level (82 ppb) occur with the highest frequency. Simulations of ozone formation are performed with a one-dimensional time dependent photochemical and dynamical model. A one-dimensional version of the Canadian Regional Circulation Model (RCM), which uses the subgrid-scale parameterization of the Canadian General Circulation Model (CGCM), controls the physical and dynamical process&s. Photochemical processes are treated within the model with an updated version of the chemical mechanism of the Acid Deposition and Oxidant Model (ADOM). The column version represents a tool that is straightforward to use to create the interface between the physical and chemical modules and readily allows for testing of various parameterizations of chemistry and dynamics. Results of simulations of the evolution of ozone in the Saint-Lawrence Valley over a whole summertime period will be presented. Our analysis for this presentation will focus on the days with high ozone levels. This work represents a preliminary step towards the climatology of the production of ozone occurring using the full three dimensional version of the RCM.

• OSTI ID: 466112
• Report Number(s): CONF-9606185--
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
AIR POLLUTION
ATMOSPHERIC CHEMISTRY
ATMOSPHERIC CIRCULATION
CANADA
ECOLOGICAL CONCENTRATION
MATHEMATICAL MODELS
OZONE
SEASONAL VARIATIONS