Dear Rafael Costa,

I am not familiar with the specific meteorological changes in IFS cycles for a particular diagnostic. As this is the OpenIFS user forum, and OpenIFS 48r1 has yet to be released, we have no first hand experience yet about the OpenIFS model's performance.

If you are interested in the upgrades and improvements with IFS cycle CY48R1 then there is a summary news item available here: https://www.ecmwf.int/en/about/media-centre/news/2023/model-upgrade-increases-skill-and-unifies-medium-range-resolutions. Therein you will also find a web link to the model cycle implementation page (Implementation of IFS Cycle 48r1) which contains a very detailed description of technical changes and to evaluation scorecards.  I hope this helps you further.

Kind regards,

Marcus