Ground based in situ observations of filter_2pack at Ny-Ålesund - Gruvebadet (NO0618R). These measurements are gathered as a part of the following projects AMAP, NILU and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: sulphate_corrected in aerosol (mass_concentration_of_sulphate_corrected_for_seaspray_expressed_as_sulphur_in_dry_aerosol_particles_in_air), sulphur_dioxide in air (mass_concentration_of_sulphur_dioxide_expressed_as_sulphur_in_air)