CARACTERIZAÇÃO DAS PROPRIEDADES ÓPTICAS DE AEROSSÓIS NA ATMOSFERA DE NATAL/BRASIL POR MEIO DE UM FOTÔMETRO SOLAR DA REDE AERONE
Biomass burning. Desert dust. RIMA. LIDAR. HYSPLIT.
The study of atmospheric aerosols contributes to the understanding of radiative forcing and global warming, in addition, the aerosol influence visibility, acid rain, human health and precipitation. Since 2016, Natal, capital of Rio Grande do Norte, has a solar photometer (CIMEL) of the RIMA / AERONET network that can identify the presence of biomass burning aerosols and desert dust from Africa. For this identification, it is aimed to characterize the optical properties of these aerosols present in the atmospheric of Natal (RN). The data provided by AERONET, at level 1.5, Version 3, provide information on some microphysical characteristics such as optical aerosol depth (AOD), Ångström coefficient (α), single scattering albedo (SSA), asymmetry factor (g), complex refractive index (N), volume size distribution (DTV) and precipitable water.The data collection period will be from August 2017 to August 2018 and thus to classify aerosols by global/national climatologies and describe their optical properties. To confirm the classification and characterization of these will be compared with satellite and LIDAR measurements, in addition, will be modeled backward trajectories in HYSPLIT in order to ascertain the origin of the air masses and the frequency of them. The aerosols present in the atmospheric column of Natal are expected to be identified as marine aerosols due to the coastal location of the city and as african desert dust and biomass burning.