Application of cosmogenic radionuclides in ozone tracer studies |
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Authors: | V Lujanas G Lujanien? |
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Institution: | (1) Institute of Physics, Savanorių 231, LT-02300 Vilnius, Lithuania |
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Abstract: | Downward flux of stratospheric ozone contributes to the near ground level ozone concentrations. The intensity, amount of vertical
ozone flow can be evaluated by the ratio of two cosmogenic radionuclides (33P/32P, 7Be/32P). Some examples presented in this paper are demonstrating the possibilities of this method. The application of tracer method
makes evident the seasonal variations (with maxima during the spring — summer months and minima during winter) of the amount
of stratospheric ozone in the ground air. Average monthly contribution from stratospheric ozone in the lower level of the
atmosphere ranged from 0 to 18% in 1998–99. During short term intervals (2–3 days) the amount of the stratospheric ozone can
increase up to ∼90%. |
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