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    Comparison of profile total ozone from SBUV (v8.6) with GOME-type and ground-based total ozone for a 16-year period (1996 to 2011)

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    Authors
    Chiou, E.W.
    Bhartia, P.K.
    McPeters, R.D.
    Loyola, D.G.
    Coldewey-Egbers, M.
    Fioletov, V.E.
    Van Roozendael, M.
    Spurr, R.
    Lerot, C.
    Frith, S.M.
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    Discipline
    Earth and related Environmental sciences
    Audience
    Scientific
    Date
    2014
    Metadata
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    Description
    This paper describes the comparison of the variability of total column ozone inferred from the three independent multi-year data records, namely, (i) Solar Backscatter Ultraviolet Instrument (SBUV) v8.6 profile total ozone, (ii) GTO (GOME-type total ozone), and (iii) ground-based total ozone data records covering the 16-year overlap period (March 1996 through June 2011). Analyses are conducted based on area-weighted zonal means for 0-30° S, 0-30° N, 50-30° S, and 30-60° N. It has been found that, on average, the differences in monthly zonal mean total ozone vary between -0.3 and 0.8 % and are well within 1%. For GTO minus SBUV, the standard deviations and ranges (maximum minus minimum) of the differences regarding monthly zonal mean total ozone vary between 0.6-0.7% and 2.8-3.8% respectively, depending on the latitude band. The corresponding standard deviations and ranges regarding the differences in monthly zonal mean anomalies show values between 0.4-0.6% and 2.2-3.5%. The standard deviations and ranges of the differences ground-based minus SBUV regarding both monthly zonal means and anomalies are larger by a factor of 1.4-2.9 in comparison to GTO minus SBUV. The ground-based zonal means demonstrate larger scattering of monthly data compared to satellite-based records. The differences in the scattering are significantly reduced if seasonal zonal averages are analyzed. The trends of the differences GTO minus SBUV and ground-based minus SBUV are found to vary between -0.04 and 0.1% yr-1 (-0.1 and 0.3 DU yr-1). These negligibly small trends have provided strong evidence that there are no significant time-dependent differences among these multi-year total ozone data records. Analyses of the annual deviations from pre-1980 level indicate that, for the 15-year period of 1996 to 2010, all three data records show a gradual increase at 30-60° N from -5% in 1996 to -2% in 2010. In contrast, at 50-30° S and 30° S-30° N there has been a levelling off in the 15 years after 1996. The deviations inferred from GTO and SBUV show agreement within 1%, but a slight increase has been found in the differences during the period 1996-2010.
    Citation
    Chiou, E.W.; Bhartia, P.K.; McPeters, R.D.; Loyola, D.G.; Coldewey-Egbers, M.; Fioletov, V.E.; Van Roozendael, M.; Spurr, R.; Lerot, C.; Frith, S.M. (2014). Comparison of profile total ozone from SBUV (v8.6) with GOME-type and ground-based total ozone for a 16-year period (1996 to 2011). , Atmospheric Measurement Techniques, Vol. 7, Issue 6, 1681-1692, DOI: 10.5194/amt-7-1681-2014.
    Identifiers
    uri: https://orfeo.belnet.be/handle/internal/2851
    doi: http://dx.doi.org/10.5194/amt-7-1681-2014
    scopus: 2-s2.0-84902125494
    Type
    Article
    Peer-Review
    Yes
    Language
    eng
    Links
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