The AeroCom project is an open international initiative of scientists interested in the advancement of the understanding of the global aerosol and its impact on climate. A large amount of observational data and model results have been assembled to document and compare state of the art modeling of global aerosol. The AeroCom tool is hosted by MET Norway and can be used to visualize observational data and to evaluate models. Observations for China from the AERONET sun photometer network are already included in the AeroCom. The tool can be used to evaluate models globally, but also regionally for the region of East Asia. An example is shown here.