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[A-3.3 Studies on Physics of Stratospheric Ozone Layer and Numerical Modeling]

[Contact Person]

Sachiko Hayashida^*
Senior Research Scientist, Ozone Layer Research Team
Global Environment Division, National Institute for Environmental Studies
Environment Agency
16-2 Onogawa, Tsukuba, Ibaraki 305 Japan
Phone +81-298-51-6111(Ext.431), Fax +81-298-51-4732
E-mail nakane@nies.go.jp
^*present address; Nara Wemen's University

[Total Budget for FY1990-1992]

16,247,000 Yen

[Abstract]

　To understand the variation of the ozone layer, modeling and studies on physical processes are important as well as photochemical ones. In this study, we examine a case in which ozone number density was low in the lower stratosphere. An one dimensional model has been developed. This model was applied to understand the seasonal variation in the upper stratospheric ozone measured with the ozone lidar at the National Institute for Environmental Studies(NIES). In order to model the stratospheric heterogeneous chemistry under disturbance by the Pinatubo eruption, the vertical distributions of the surface area of the stratospheric aerosols were estimated based on the aureolemeter and lidar data. Numerical studies on the breakdown of the polar vortex have been carried out to understand the variations of the stratospheric ozone.

[Key Words]

One-dimensional model, Polar Vortex, Trajectory, Potential Vorticity, Pinatubo Aerosols