The study of atmospheric trace gases is increasing over the years. One of these gases is sulfur dioxide (SO2), which is found in the troposphere and stratosphere, as a result of both natural and anthropogenic emissions. A campaign was made in Cubatao-SP, from 04/12/2007 to 08/07/2007, to measure the total column of this gas with a Brewer Spectrophotometer. With this instrument the total column of SO2 was calculated. Since this region is highly industrialized, high total columns of SO2 were expected, which indeed occurred, with a daily average of 6.4 DU during the whole period.
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