@jurgenkusche.bsky.social
Geodesist, interested in global water cycle, sea level, gravity field, thermosphere. Professor at University of Bonn. Views are my own.
S-6 MF radiation pressure
Of all 12,000 satellites in orbit, the one with the highest requirement for precise orbit determination is Sentinel-6 MF. Since it is a reference mission for measuring sea level change. Kristin Vielberg has just published an improved force model for S-6 MF: link.springer.com/article/10.1...
23.09.2025 18:29 — 👍 5 🔁 0 💬 0 📌 0Field work is beautiful.
10.09.2025 15:52 — 👍 0 🔁 0 💬 0 📌 0
40yr trend in TWSA, red = drying (-up to 6mm/yr) blue = wetting (up to 6mm/yr)
Our PhD student Charlotte Hacker (@crc1502-detect.bsky.social @unibonn.bsky.social) published a 40yr record of total water storage anomalies (TWSA), similar to GRACE but from 1984 on. She combined SLR, DORIS and climate data in a new method.
zenodo.org/records/1582...
doi.org/10.22541/ess...
Neutral density (left) and ion density (right) at 200km altitude simulated with TIE-GCM on April 10, 2010
We have a new doctor. Congrats to Armin Corbin for defending his PhD work on numerical simulation of mass density in the upper Earth's atmosphere with data assimilation at @unibonn.bsky.social
(bonndoc.ulb.uni-bonn.de/xmlui/handle...).
Final review paper of the GROCE team on the atmosphere-land-ice-ocean system around the 79°N glacier by Torsten Kanzow et al. in tc.copernicus.org/articles/19/...
09.05.2025 12:11 — 👍 0 🔁 1 💬 0 📌 0
The change in height of the different GPS stations (red = rising; blue = sinking). The rise was particularly pronounced in the drought between 2015 and 2019. - Copyright Image: AG Kusche/University of Bonn
Climate change is lifting South Africa out of the ocean: According to a study by the University of Bonn, droughts caused the country to rise by six millimeters between 2012 and 2020. ...
weiterlesen
Read our brief news article about the watercycle/GEWEX perspective of upcoming gravity satellite missions
15.04.2025 19:02 — 👍 1 🔁 0 💬 0 📌 0Excellent paper, demonstrates the importance of land cover composition (shares) and configuration (spatial arrangemen) on climate
12.04.2025 19:08 — 👍 1 🔁 0 💬 0 📌 0What is the significance? The satellites did not fly over the disaster area in 2021. But every year they pass hundreds of similar and bigger extreme events, many over tropical ocean and/or regions where we don't have radar networks and good NWP models. All this adds to the LRI noise.
02.02.2025 11:58 — 👍 0 🔁 0 💬 0 📌 0
Precip accumulated for 10hours during the event, and the satellite overpasses
Master student Magda Kracheletz shows in agupubs.onlinelibrary.wiley.com/doi/epdf/10.... how the GRACE-FO laser ranging instrument would have observed the devastating 2021 Ahr Valley water masses, even during atmospheric convection prior to flooding.
02.02.2025 11:51 — 👍 2 🔁 0 💬 1 📌 0
