The Greenland GNSS Network (GNET): Geodetic Grade GNSS measurements of Greenland's 3D Bedrock Displacement from 1995–2025

Abstract. The Greenland GNSS Network (GNET) consists of 71 individual geodetic-grade Global Navigation Satellite Systems (GNSS) stations mounted directly in bedrock located along the perimeter of the Greenland Ice Sheet (GrIS). The first continuously running GNSS (cGNSS) station was set up in 1995 and has been running up to date. During the fourth International Polar Year (IPY) 2007–2008, GNET was established with the expansion of 49 stations. As of 2025, the network has expanded to include 19 town sites and 48 remote sites. Over time, the installations have undergone various updates, helping to stabilize and improve the return observations from the network. The original installations were done using Global Positioning System (GPS)-only receivers; these have, with time, been changed to receivers capable of tracking multiple constellations. Operating cGNSS stations in the remote high Arctic is troublesome, giving rise to data gaps and/or downtime for stations in the network. Here we present the most comprehensive dataset from 1995 to 2025, Receiver Independent Exchange Format (RINEX) v2 and/or v3 daily files are now available, see Table B1. Processed daily East-North-Up (ENU) time series for all sites is available at https://doi.org/10.11583/DTU.31397901 Solgaard, et al. (2026), and extensive metadata logfiles documenting the entire lifespan of the specific stations can be found here Danish Agency for Climate Data (KDS) (2026). Photos of the stations can be found on (https://go-gnet.org/). Through a noise characterization analysis, we show that a fractional Gaussian noise profile is expected. Furthermore, we compare our processed ENU time series with already published subsets of the full dataset from independent processing centers. Here, we conclude that the DTU release is significantly more stable in the horizontal components compared to other publicly available products.