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[A-1.4 Data Analysis and Modeling of Variability of the Ozone Layer]

[Contact Person]

Hideaki Nakane
Head, Ozone Layer Research Team
National Institute for Environmental Studies
Environment Agency
Onogawa, Tsukuba, Ibaraki 305, Japan
Phone +81-298-51-6111, Fax +81-298-51-4732
E-mail nakane@nies.go.jp

[Total Budget for FY1994-FY1996]

41,002,000 Yen (FY1996; 19,333,000 Yen)

[Abstract]

　To understand the mechanism of variability of the ozone layer, we developed a software system working on a workstation for interactiveanalyses of observed data, trajectory analyses and calculation/display of potentialvorticity and other meteorologicalparameters. The interrelation between the ozone variations in the two polar regions and a circulationchange in the winter stratosphere were investigated using the daily total ozone data observed by Nimbus 7/TOMS(ver.6) and the geopotentialheight data analyzed by NMC. We also developed the numerical models for the study of the time development and the stability of the polar vortex.

[Key Words]

Ozone depletion, Polar Vortex, SESAME, Planetary Wave, Sudden Warming