Global climate change is intensifying due to the increase in the production of greenhouse gases (GHGs), including water vapour (H2 O), methane (CH4 ), carbon dioxide (CO2 ), nitrogen oxides (NOx ), and ozone (O3 ). In Brazil, H2 O and CH4 are produced in higher concentrations in the Amazonian rainforest with oodplain trees, where biogenic volatile organic compounds (BVOCs), as CH4 and others, and NOx are typically generated. In the presence of ultraviolet (UV), BVOCs and NOx are precursors of ozone (O3 ), toxic to all living beings. O3 is naturally produced in the rainforest during the wet season, but these reactions are intensi ed during the dry season, especially due to drought and biomass burning. In Cerrado, GHGs are mainly produced by biomass burning during the dry season, July and August, including O3 , which can pass from 20 ppb (nmol. mol-1) in the wet season to 50-100 ppb in areas under re during the dry season, with biomass burning in situ and transport of biomass burning emissions from the Amazonian forest to the Cerrado. Most of the Brazilian agriculture is produced in the Cerrado, where naturally or anthropogenically produced biomass burning occurs. erefore, important Brazilian cultures sensitive to O3 , as soybean and cotton, which are a ected by O3 concentrations above 40 ppb, are having a reduction in their yield because they are sown at the beginning of the wet season, September and October, when the O3 concentration is still high.