Surface elevation of Qaanaaq ice cap, Greenland in July 2015

Two sets of dual-frequency GPS (Leica Geosystems System 1200) were used to measure the surface elevation with a kinematic positioning mode. One antenna was fixed on the roof of Qaanaaq Club House as a reference station. Another GPS antenna was mounted on a backpack to serve as a rover station. The survey was carried out along a longitudinal profile. Measurements were performed every seconds. Three-dimensional coordinates relative to the reference station were computed by post-processing the data with GPS analysis software (RTKLIB). The estimated error of the measurements is less than 5 cm.