Multi-resolution analysis of global total ozone column during 1979?1992 Nimbus-7 TOMS period - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Annales Geophysicae Année : 2004

Multi-resolution analysis of global total ozone column during 1979?1992 Nimbus-7 TOMS period

E. Echer

Résumé

A relatively recent technique, the multi-resolution analysis (MRA), was applied to the global total ozone column measured by the Nimbus-7 TOMS instrument during 1979?1992. Ozone monthly averages were filtered in orthonormal frequency bands using the Meyer wavelet transform, and the ozone variability was analyzed in different time scales: high frequency oscillations (2?4 months), semiannual variation (6 months), annual variation, quasi-biennial oscillation (QBO), El Niño-Southern Oscillation (ENSO) and solar cycle related variations. MRA was thus showed to be an efficient band-pass filter to isolate different time scale signals. QBO, ENSO and solar cycle related variations in global total ozone are investigated in more detail through spectral and cross-correlation analyses.
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Dates et versions

hal-00317323 , version 1 (18-06-2008)

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  • HAL Id : hal-00317323 , version 1

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E. Echer. Multi-resolution analysis of global total ozone column during 1979?1992 Nimbus-7 TOMS period. Annales Geophysicae, 2004, 22 (5), pp.1487-1493. ⟨hal-00317323⟩

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