Global averages of monthly ozone profile data obtained using the solar backscatter ultraviolet (SBUV) instrument, are analyzed for the period from November 1978 to September 1985. Differences between ozone profile data for Umkehr layers 4 to 10-from 19 km to 53 km, approximately-and the deseasonalized ozone data are first estimated for the entire time period at all Umkehr layers, and are then Fourier analyzed to obtain the amplitude, phase and percentage contribution to the total variance of the first and second harmonics. It is found that the annual wave in global ozone is strong in the annual wave strong in the high and low stratosphere and weak in the middle stratosphere, whereas the semiannual wave in global ozone is strong in the middle stratosphere. Global ozone deviations at Umkehr layer 7 are compared to the 10.7 cm solar flux to yield a strong positive correlation for the entire period, which implies that the quasi-semiannual wave in global ozone depends on the quasi-semiannual wave of the 10.7 cm solar flux.
Geophysical Research Letters
- Pub Date:
- May 1992
- Atmospheric Composition and Structure: Middle atmosphere-composition and chemistry