Christoph Herbert, (ECMWF) presented the CERISE progress on coupled land-atmosphere data assimilation for future global reanalysis at the online International Symposium on Data Assimilation (ISDA) event on 13 February 2025: https://isda-online.univie.ac.at/online-events/february-2025-coupled-data-assimilation-ii/

Christoph introduced the land-atmosphere coupling approach developed at ECMWF which is based on outer loop coupling. He presented results exploring different strengths of coupling and ongoing work to develop coupled skin temperature data assimilation over land using coupled eXtended Control Variable approach.

The ISDA event included other presentations related to land and ocean data assimilation coupling with the atmosphere. The Session was very well attended with more than 100 participants.

 

picture of Christophe speaking