GC-Net AWS observed and estimated positions

This script processes the compilation of coordinates gathered at the GC-Net sites. Most of the coordinates were obtained with handheld GPSs with varying accuracies. For each site, we then fit use a spline of order one to inter- or extrapolate the station summer position. Consequently, the fit does not necessarily match with the observation for a given year. The repository also contains raw and processed files for a GNSS survey at JAR1 in 2009. Only for the following sites could the yearly position be estimated due to sufficient coordinates and surface velocities above the GPS accuracy level: Swiss Camp Crawford Point 1 DYE-2 EastGRIP Humboldt JAR1 NASA-E NASA-U NASA-SE Petermann ELA Tunu-N The compilation of coordinates is available here All the field books are available here For the latest updates, please visit: https://github.com/GEUS-Glaciology-and-Climate/GCNet_positions