Ground based in situ observations of high_vol_sampler at Barcelona (Palau Reial) (ES0019U). These measurements are gathered as a part of the following projects ACTRIS, RI-URBANS and they are stored in the EBAS database (http://ebas.nilu.no/). Parameters measured are: elemental_carbon in pm1 (mass_concentration_of_elemental_carbon_in_pm1_in_air), elemental_carbon in pm1 (mass_concentration_of_elemental_carbon_in_pm1_in_air), organic_carbon in pm1 (mass_concentration_of_organic_carbon_in_pm1_in_air), organic_carbon in pm1 (mass_concentration_of_organic_carbon_in_pm1_in_air), total_carbon in pm1 (mass_concentration_of_total_carbon_in_pm1_in_air), total_carbon in pm1 (mass_concentration_of_total_carbon_in_pm1_in_air)