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...

Field work is beautiful.

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...

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/...

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

Excellent paper, demonstrates the importance of land cover composition (shares) and configuration (spatial arrangemen) on climate

What 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.

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.