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[A-1.2.4 Effects of polar-mid latitude interactions on ozone trends]


[Contact person]

      　
      Alexei Kournossenko
      Hideaki Nakane, D.Sc.,
      Deputy Director, Atmospheric Environment Division
      National Institute for Environmental Studies (NIES)
      Environment Agency
      16-2 Onogawa, Tsukuba, Ibaraki 305 Japan
      Te1. 81-298-50-2491, Fax. 81-298-58-2645
      E-mail: nakane@nies.go.jp


[Total Budget for FY1998]

　1,966,000 Yen

［Abstract］

　As the initial stage of the study of long termed ozone trends combined with the analysis of polar vortex behavior, the deseasoned QBO model was developed. The data of 40-years NCAR/NCEP Reanalysis Project (zonal component of equatorial winds) have been treated using harmonic analysis technique.


［Key Words］

　QBO (Quasi-biennial Oscillations), ozone trends, polar vortex, solar activity, NCEP Reanalysis data