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The meteorological changes can be found on the ECMWF IFS CY47R3 page.
The main change which impacts CAMS is the switch to running the forecasts (but not the analysis) using single-precision arithmetic for increased computational efficiency.
Atmospheric composition content of the new cycle
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Availability of test data from the cycle 47r2 test suites
The CAMS operational FTP server (ECPDS) currently serves the most recent 3 days of test data in the directories "/DATA/CAMS_GLOBAL_TEST" and "/DATA/CAMS_EUROPE_BC_TEST" for global and regional boundary condition data, respectively. In addition, surface level fields (model level 137) are provided as individual files in the CAMS_GLOBAL_ADDITIONAL_TEST directory. Users wanting to access the output from the current test system for a longer period can access the data from 1 November 2020 onwards directly on MARS or through our WebAPI. However, please note that only the data after 5 January 2021 are based on the latest configuration. More details can be found here: Accessing CAMS 47r2 test dataTest data will become available in August.
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