The 58 GPS station network in Greenland has been running for more than 10 years. It has been documented that surface displacements can be estimated successfully from the network and give valuable information about ice mass loss and GIA. Hence, GNET are improving our understanding of glacier dynamics, geodynamics and impact of climate changes. In addition, GNET has been used for studying ionospheric conditions. This session will bring together scientists to report on their use of GNET data for improving our understanding of geodynamic, glaciological, and climate change processes at work on the ice sheet, as well as of the ionospheric conditions. Presentations on the use of GNET 3D displacements and on the integration with other data sources such as GRACE are solicited.