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Annales Geophysicae An interactive open-access journal of the European Geosciences Union
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Volume 35, issue 1
Ann. Geophys., 35, 25–37, 2017
https://doi.org/10.5194/angeo-35-25-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
Ann. Geophys., 35, 25–37, 2017
https://doi.org/10.5194/angeo-35-25-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.

Regular paper 03 Jan 2017

Regular paper | 03 Jan 2017

Measurements of the total ozone column using a Brewer spectrophotometer and TOMS and OMI satellite instruments over the Southern Space Observatory in Brazil

Lucas Vaz Peres1,2, Hassan Bencherif3,4, Nkanyiso Mbatha5, André Passaglia Schuch1, Abdoulwahab Mohamed Toihir3, Nelson Bègue3, Thierry Portafaix3, Vagner Anabor1, Damaris Kirsch Pinheiro1, Neusa Maria Paes Leme6, José Valentin Bageston7, and Nelson Jorge Schuch7 Lucas Vaz Peres et al.
  • 1Federal University of Santa Maria, Santa Maria – RS 97195-000, Brazil
  • 2CAPES Foundation, Ministry of Education of Brazil, Brasília – DF 70040-020, Brazil
  • 3University of Reunion Island, LACy, UMR 8105, Réunion, France
  • 4University of KwaZulu-Natal, School of Chemistry and Physics, Durban, South Africa
  • 5University of ZuluLand, Department of Geography, KwaDlangezwa, 3886, South Africa
  • 6Northern Regional Center, National Institute for Space Research – CRN/INPE, Natal – RN, 59076-740, Brazil
  • 7Southern Regional Center, National Institute for Space Research – CRS/INPE, Santa Maria – RS, 97105-970, Brazil

Abstract. This paper presents 23 years (1992–2014) of quasi-continuous measurements of the total ozone column (TOC) over the Southern Space Observatory (SSO) in São Martinho da Serra, Brazil (29.26° S, 53.48° and 488 m altitude). The TOC was measured by a Brewer spectrometer, and the results are also compared to daily and monthly observations from the TOMS (Total Ozone Mapping Spectrometer) and OMI (Ozone Monitoring Instrument) satellite instruments. Analyses of the main interannual modes of variability computed using the wavelet transform method were performed. A favorable agreement between the Brewer spectrophotometer and satellite datasets was found. The seasonal TOC variation is dominated by an annual cycle, with a minimum of approximately 260 DU in April and a maximum of approximately 295 DU in September. The wavelet analysis applied in the SSO TOC anomaly time series revealed that the Quasi-Biennial Oscillation (QBO) modulation was the main mode of interannual variability. The comparison between the SSO TOC anomaly time series with the QBO index revealed that the two are in opposite phases.

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In this paper, we analyze the total ozone column over the Southern Space Observatory, Brazil, between 1992 and 2014 by Brewer spectrometer and TOMS and OMI satellite instruments, finding good agreement between the two. In addition, the seasonal TOC variation is dominated by an annual cycle, and the Quasi-Biennial Oscillation modulation was the main mode of interannual variability and in opposite phase to the total ozone column anomaly time series.
In this paper, we analyze the total ozone column over the Southern Space Observatory, Brazil,...
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