[en] Among the different variables that cause impacts on the climate, we must rely on the variation of atmospheric aerosols, in this context and excluding human activity, its appearance is closely correlated with the presence of ions in the Atmosphere. These ionized molecules are formed both by the actions of cosmic space rays and by the terrestrial Gamma and Alpha radiations that will constitute the ionic agglomerates which, in turn, influence the amount of atmospheric aerosols of a given region, especially in forest areas. This will be due to the transport of Radon gas dissolved in the groundwater to the air by evapotranspiration of the plants, since the high density of the Radon gas (10 kg/m³ ) released directly from soils and rocks has little penetration power in the Atmosphere. In this paper we present a study on the correlation of ionic particles in an island forest atmosphere (Trindade Island) and Atlantic dune forest (Dunas Park, Natal RN) with the variation of Radon gas. (author)