Within the framework of a project comprising part of the Spanish Space Program related to the JASON-1 CNES (Centre National d’Etudes Spatiales)/NASA (National Aeronautics and Space Administration) mission, a campaign was conducted on June 9-17, 2003, in the Absolute Calibration Site of the island of Ibiza. The objective was to determine the local marine geoid slope under the ascending (187) and...