ArcticOcean, satellitealtimetry, tidegauge, sealevelreconstruction, Reconstruction, Oceans, Methodology, Measuring instruments, Altimeters, Ice, Oceanography, Sea level, Tides, Gauges, Mean sea level, Tide gauges, Satellites, Datum (elevation), Satellite altimetry, Satellite data, Polar environments, Quality, Yield, Coastal environments