Atmospheric aerosols Aerosols 6 Argentina 6 Augers 6 Cosmic rays 6 Observatories 6 Pierre Auger observatory 6 Aerosol 4 Aerosol optical depths 4 Astroparticle physics 4 Buenos Aires 4 Cosmology 4 Fluorescence 4 Large detector systems for particle and astroparticle physics 4 South America 4 Ultra high-energy cosmic rays 4 article 4 atmospheric pollution 4 particulate matter 4 urban atmosphere 4 Aerosol concentration 2 Air Pollutants 2 Air mass 2 Air masses 2 Air quality 2 Air quality monitoring 2 Atlantic Ocean 2 Atmospheric conditions 2 Atmospheric corrections 2 Atmospheric effect 2