What if we brought all four major space-geodetic techniques together on a single spacecraft for the first time? ESA’s Genesis mission, expected to launch in 2028, will do just that, combining Global Navigation Satellite System (GNSS), Satellite Laser Ranging (SLR), DORIS and Very Long Baseline Interferometry (VLBI) on one carefully calibrated platform. Well before launch, …[Read More]
The research gap Ocean tides play a significant role on ocean circulation, coastal processes and mass variations. Tides are generated from the gravitational interaction between Earth, Moon and Sun, which typically results in two high and two low tides observed each day. Satellite observations have vastly expanded our understanding of ocean tides. In 2022, the Surface …[Read More]
Geodesy is fundamental to understanding our dynamic planet. From monitoring sea-level rise and glacier melt to maintaining precise terrestrial reference frames for GNSS and Earth observation, geodesy provides the scientific backbone for many disciplines represented within the EGU and beyond. Despite its importance, geodesy often remains invisible outside the scientific community. Even within geosciences, many people …[Read More]
Part 2 – the regional case In our previous post, we discussed global scale phenomena, showing how the Global Navigation Satellite Systems (GNSS) constellation is the ultimate instrument for monitoring the Earth as a whole: tracking plate tectonics, defining the planet’s absolute size, and measuring variations of its gravity field. Essentially, the big questions of …[Read More]
Part 1 – the global case When you check directions on your smartphone or track your morning run, you’re tapping into a global infrastructure that has revolutionized not just navigation, but our understanding of Earth itself. What began as military technology has evolved into powerful scientific tools that confirm longstanding theories and reveal previously unobservable …[Read More]
Imagine you are going on a long mountain tour. Your backpack is heavy, the path is steep, and although you have been walking for hours, all you can see ahead of you is the next climb. Doing a PhD is like climbing such a mountain. It can feel exhausting, there is always the next challenge …[Read More]
Geodesy is the science of measuring the Earth’s shape, gravity field, and rotation. What if we could make it exciting, fun, and easy for everyone to understand? That’s exactly why the International Association of Geodesy (IAG) and its Global Geodetic Observing System (GGOS) launched the Geodesy Cartoons initiative: to bring geodesy closer to the public …[Read More]
It is almost time for the scientific assembly of the International Association of Geodesy (IAG), an association of the International Union of Geodesy and Geophysics (IUGG). The EGU Geodesy Division and the IAG have worked together for many years. For example, the IAG has been the main sponsor of the Geodesy Reception at past EGU …[Read More]
Knowledge gaps in our understanding of the Hydrological Cycle The water cycle continuously provides us with fresh water. A critical process in the water cycle is evapotranspiration (ET), meaning that water evaporates from the surface and transpires from plants into the atmosphere. ET plays a crucial role in climate stability and the regulation of global …[Read More]
Welcome to the first of its kind, the Geotandem 01! A collaborative series between EGU divisions. Interdisciplinarity is intrinsic to Geosciences, so we want to showcase how researchers approach the same topics from different but also complementing perspectives. In each edition, we will bring you a high-interest topic for the community seen from the eyes …[Read More]
