1Federal University of Santa Maria, Santa Maria – RS 97195-000,
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,
5University of ZuluLand, Department of Geography, KwaDlangezwa, 3886,
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
Received: 07 May 2016 – Revised: 04 Nov 2016 – Accepted: 14 Nov 2016 – Published: 03 Jan 2017
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.
Vaz Peres, L., Bencherif, H., Mbatha, N., Passaglia Schuch, A., Toihir, A. M., Bègue, N., Portafaix, T., Anabor, V., Kirsch Pinheiro, D., Paes Leme, N. M., Bageston, J. V., and Schuch, N. J.: Measurements of the total ozone column using a Brewer spectrophotometer and TOMS and OMI satellite instruments over the Southern Space Observatory in Brazil, Ann. Geophys., 35, 25-37, doi:10.5194/angeo-35-25-2017, 2017.