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A-1.4.2 Studies on the Arctic ozone depletion mechanisms using the chemical transport model EF Fellow name: Alexander Lukyanov

[Contact Person]

Hideaki Nakane
Deputy Director
Atmospheric Environmental Division
National Institute for Environmental Studies
Environment Ageney
Onogawa 16-2. Tsukuba, Ibaraki 305, Japan
Tel. 81-298-50-2491 Fax, 81-298-58-2645
E-mail:nakane@nies.go.jp

Total Budget for FY 1996-FY 1998;

3,705,000 Yen (FY 1998;1,837,000Yen)

Abstract.

To simulate dynamical and chemical proeesses in the lower stratosphere the Lagrangian trajectory chemical model has been developed. This model is based on the chemical box model, developed in previous year, and trajectory model. Chemical species mixing ratio is integrated along large ensembles of isentropic or full three-dimensional calculated trajectories to produce the space distribution chemical picture in the region of interest. Reverse domain- filling technique provides the calculated values of the species on the uniform grid. The space resolution of the model depends on the number of trajectories only. In this study high latitude northern hemisphere in winter 1 997 is considered. Also model sensitivity studies have been conducted.

[Key Words]

Lagrangian Chemical Transport Model, Domain-filling trajectories, Polar Stratospheric Clouds. Heterogeneous chemistry