This session will focus on the recent local and global geoid models (GGMs), satellite only and combined models based on the GRACE, CHAMP and GOCE satellites with special emphasize on the evaluation of the EGM2008 model. Also, investigations for combination of the local and global geoid models, height datum, datum unification, application of the corrective surface idea as well as the new progress in theories and numerical approaches in local and global geoid modeling are in focus of this session.