Several studies showed that the atmosphere on the forest, free of pollutants, have low concentrations of Condensation Nuclei of the clouds, concentrations typical of the atmosphere at sea. In low concentrations of NCN, microphysics properties of clouds are more sensitive to the increase of NCN. In Amazon, the master source is the vegetation cover of the forest. Then, an increase in emissions of NCN by anthropogenic activities can have a strong impact on local weather. These results are discussed in this paper.
Volatil organic compound; Clouds; Precipitation