Abstract
The Antarctic continent shows a significant decrease of the total ozone content during the austral spring, from where air mass with poor ozone content can move generating secondary effects of the Antarctic Ozone Hole in low latitudes. The total ozone column data from Brewer Spectrophotometer is monitored at the Southern Space Observatory - OES/CRS/INPE-MCT (29.42° S, 53.87°W, 480 m a.s.l.), Sao Martinho da Serra, RS, Brazil, in a cooperation between the Southern Regional Space Research Center – CRS/INPE–MCT with the Space Science Laboratory of Santa Maria – LACESM/CT-UFSM, and the Ozone Laboratory – LO/DGE/CEA/INPE – MCT. Ozone data from TOMS on board NASA Satellite are also used in this analysis. The methodology is based in analysis of potential vorticity on isentropic surfaces for the period 1997 to 2007. The obtained results show the influence of ozone poor content air masses on the central region of the Rio Grande do Sul state, in southern Brazil.
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