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Detailed Reference Information |
Kane, R.P., Sahai, Y. and Casiccia, C. (1998). Latitude dependence of the quasi-biennial oscillation and quasi-triennial oscillation characteristics of total ozone measured by TOMS. Journal of Geophysical Research 103: doi: 10.1029/97JD03651. issn: 0148-0227. |
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The 12-month moving averages of total ozone mapping spectrometer (TOMS) total ozone data for 14 years (1979--1992) were examined for quasi-biennial oscillation (QBO) and quasi-triennial oscillation (QTO) and compared with stratospheric low-latitude zonal wind and equatorial eastern Pacific sea surface temperature (SST). The equatorial ozone had a strong QBO with a period of ~30 months, and its maxima tallied with westerly wind maxima. At other latitudes the ozone maxima spacings were often different from 30 months, more so in the northern hemisphere. A spectral analysis showed that both hemispheres had one peak at ~20 months and another peak at ~30 months, only up to ~50¿ latitude. At higher latitudes these peaks shifted to ~23 and ~36 months. For 0¿--50¿ the ~30-month periodicity in the northern hemisphere showed abrupt phase changes, while the southern latitudes showed a roughly gradual phase shift. The northern hemisphere had an additional periodicity at ~4 years, roughly matching the SST. Analysis of the same data without 12-month averaging showed the above characteristics more clearly and revealed additional peaks at ~0.7 years (8--9 months) and ~1.30 years (16--17 months). All of these peaks showed shifts (mostly increases) at higher latitudes. ¿ 1998 American Geophysical Union |
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Abstract |
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Keywords
Atmospheric Composition and Structure, Middle atmosphere—composition and chemistry, Atmospheric Composition and Structure, Middle atmosphere—constituent transport and chemistry, Meteorology and Atmospheric Dynamics, Middle atmosphere dynamics (0341, 0342) |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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