SciELO - Scientific Electronic Library Online

 
vol.27 issue2Characterization of ozone transport among metropolitan regionsInsights of meso and micro-scale processes for the Caxiuanã forest region from high resolution simulation author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Revista Brasileira de Meteorologia

Print version ISSN 0102-7786

Abstract

RIGOZO, Nivaor Rodolfo et al. Reconstruction and searching ozone data periodicities in southern Brazil (29ºS, 53ºW). Rev. bras. meteorol. [online]. 2012, vol.27, n.2, pp. 243-252. ISSN 0102-7786.  http://dx.doi.org/10.1590/S0102-77862012000200010.

Ozone plays a very important role in the nature due its characteristics as a natural filter of ultraviolet solar radiation. Thus, it is pertinent for the scientific community to understand all natural influence factors involving ozone along with a large time series. In this work, a reconstruction of ozone time series obtained by Brewer spectrophotometer from 1994 to 2008 at the Southern Space Observatory (SSO) - 29ºS, 53ºW - Southern Brazil is presented. TOMS-OMI data were used to follow the days without data, where a coefficient of correlation between TOMS-OMI and Brewer is acceptable around r = 0.89. Besides, wavelet analysis to determine the temporal evolution of the frequencies and the amplitudes was applied. Moreover, wavelet analysis aiming to determine the temporal evolution of the frequencies and the amplitudes was performed. The results pointed a period of 365 days (1 yr) for the seasonal variation of ozone, of 600 days attributed for a possible QBO influence and two periods of 2000 and other 4000 days regarding possibly to the second harmonic of the 11-year solar cycle.

Keywords : Ozone; Brewer; Quasi-Biennial Oscillation; solar activity; wavelet analysis.

        · abstract in Portuguese     · text in English     · pdf in English