Variabilidade do perfil vertical de ozônio sobre a região metropolitana de Manaus: uma abordagem por satélite

Abstract

This work deals with the variability of the vertical ozone profile in the metropolitan region of Manaus. This study aimed to study the temporal variability of vertical ozone profile in order to evaluate the possible relationship between variability and large-scale climate variability associated with the El Niño - Southern Oscillation (ENSO) and the Oscillation Almost Biennial (OQB ). also intends to to investigate the effects of weather and fire outbreaks in the behavior of the concentration of tropospheric ozone over the study area. For this, daily estimates of ozone profile were used, inferred by satellite AQUA for the period 2003 to 2014. The statistical analysis used were averaging, deviations (anomalies), variance, Pearson's coefficient and wavelet transform. The results show negative linear correlation between ozone and ENSO index. In La Niña years, positive anomalies of ozone were found, and El Niño years was observed negative anomalies of ozone. As for the ozone correlation analysis with OQB, the Pearson coefficient is positive, showing that for positive / negative values of OQB, positive / negative anomalies are observed in ozone over the metropolitan region of Manaus. In the troposphere about 80% of the variability of the vertical ozone profile is associated with high frequency variations, or annual and semiannual which are probably related to the amount of solar radiation with the seasons change, with burned and thus relates with carbon monoxide profile over the study area. The remaining 20% of ozone variability at low levels, in turn, are correlated to the almost two-year and interannual fluctuations (ENSO and OQB). By withdrawing the annual cycle, it is observed that the semianual scale, 18% of the variance occurs near the surface and approximately 10% above 30 hPa. In biennial range about 15% of the variance contained in the total variation is observed in the lower troposphere and 25% is seen in the stratosphere above 30hPa and analyzing the interannual scale about 5% of the variability is contained in the full band and is most significant at the level 120 hPa.