As one of the service products, CAMS is currently producing a global reanalysis of reactive trace gases, greenhouse gases and aerosol concentrations (Inness et al., 2019). The production of the reanalysis has started early 2017, and the period 2003-2019 was completed in January 2020. The CAMS reanalysis will be further extended in the years up to 2021. This document presents the validation results for the 17-year reanalysis run, 2003 - 2019, focussing on aerosols and reactive gases.