The 2023 GNSS Interferometric Reflectometry Short Course, co-sponsored by EarthScope Consortium and the the Collaborative Research Center 1502 DETECT, University of Bonn, was held last week. GNSS Interferometric Reflectometry (GNSS-IR) uses data from GNSS sites to measure changing conditions such as snow depth, soil moisture, and water levels around a GNSS antenna.

The metaphor of a “slippery slope” is often invoked for things that might quickly get out of control, but in glaciology these words can be applied more literally. In a warming world, we want to know how quickly ice sheets can melt and raise sea level.