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‼️ We are excited to announce that the 𝗜𝗙𝗦 𝗺𝗼𝗱𝗲𝗹 𝗖𝘆𝗰𝗹𝗲 𝟰𝟵𝗿𝟭 has entered the Release Candidate Phase‼️ 𝗪𝗵𝗮𝘁 𝗱𝗼𝗲𝘀 𝘁𝗵𝗶𝘀 𝗺𝗲𝗮𝗻? This is the final stage of the testing framework for the next version (IFS Cycle 49r1) of our weather forecast model. Forecast production using the new model is running in parallel with the operational production, and the test data is available for dissemination to those in Meteorological services of our Member and Co-operating states and our licensed users in near real-time. IFS Cycle 49r1 brings substantial changes to data assimilation methodology, the use of observations, and the underlying IFS forecast model. There are also technical changes and new parameters available, the full list of changes can be found here: https://lnkd.in/dqtGrURC 𝗪𝗵𝗮𝘁 𝗰𝗮𝗻 𝘆𝗼𝘂 𝗱𝗼? Users of ECMWF forecast products are invited to test their processing chains as early as possible with the test data provided! Step 1️⃣ Access 🔹Users with access to the MARS archive can access the data with experiment version (expver) 0079 (MARS keywords EXPVER=0079, CLASS=OD) 🔹Users with access to ECPDS and the Products Requirements Editor (PREd) can login to the test system at https://lnkd.in/duEy86aN and https://lnkd.in/daQ2DUYG and trigger the transmission of test products in the usual manner. Please note that PREd will be ready for testing at the beginning of next week. 🔹Licensed users may require intervention from the User Services Section and should raise requests via the ECMWF Support Portal. Step 2️⃣ Testing 🔹Test your workflows using the new data! 🔹Note that products provided during the release candidate phase are for internal evaluation purposes only. The products should not be redistributed, used in operations (including commercially) or published on social media platforms Step 3️⃣ Feedback Send us feedback and report any problems you find with this data via the ECMWF Support Portal: https://support.ecmwf.int/ 𝗡𝗲𝗲𝗱 𝗺𝗼𝗿𝗲 𝗶𝗻𝗳𝗼? 🔹All the details of the new model and how to use the test data: https://lnkd.in/dqtGrURC. 🔹ECMWF Support Portal for feedback: https://support.ecmwf.int/ 🔹Stay tuned for more information to come!