The CAMS IFS cycle 50R1 is based on ECMWF's IFS Cycle 50r1.
The CAMS datasets affected by the upgrade are:
The planned timetable for the implementation of the cycle 50R1 is as follows:
| Date | Event |
|---|---|
| late April 2025 | Implementation |
The timetable represents current expectations and may change in light of actual progress made.
IFS cycle 50R1 is going through its final preparation phase.
The meteorological changes can be found on the ECMWF IFS CY50R1 page.
Assimilation
Observations
Emissions
Model changes
Aerosol developments (COMPO):
Reactive gases developments (COMPO):
The GRIB model identifiers (generating process identification number) for cycle 50r1 will be changed as follows:
GRIB 1 Section 1 Octets | GRIB 2 Section 4 Octets | ecCodes key | Component | Model identifier | |
|---|---|---|---|---|---|
49r1 | 50r1 | ||||
6 | 14 | generatingProcessIdentifier | Atmospheric model | 158 | 161 |
6 | 14 | generatingProcessIdentifier | Ocean wave model | 106 | 109 |
For all parameters in GRIB 2 the Master Tables Version Number will be changed as follows:
GRIB 2 Section 1 Octets | ecCodes key | Master Tables Version Number | |
|---|---|---|---|
49r1 | 50r1 | ||
10 | tablesVersion | 33 | 35 |
To handle the data of Cycle 50r1 we recommend to use the ECMWF software packages
ecCodes (2.44.0)
CodesUI (minimum version)
Magics (4.16.0)
Metview (5.26.1)
ODC (1.6.0)
On the ATOS HPC these versions correspond to ecmwf-toolbox/2025.1
The CAMS operational ECMWF data portal (aux.ecmwf.int; SFTP/FTP/HTTPS data access) will serve the most recent 3 days of test data, once the e-suite is running in near-real-time, 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) will be provided as individual files in the "/DATA/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 05-2025 onwards directly on MARS or through the Atmosphere Data Store. More details can be found here: Accessing CAMS 50r1 test data. |
This document has been produced in the context of the Copernicus Atmosphere Monitoring Service (CAMS). The activities leading to these results have been contracted by the European Centre for Medium-Range Weather Forecasts, operator of CAMS on behalf of the European Union (Delegation Agreement signed on 11/11/2014 and Contribution Agreement signed on 22/07/2021). All information in this document is provided "as is" and no guarantee or warranty is given that the information is fit for any particular purpose. The users thereof use the information at their sole risk and liability. For the avoidance of all doubt , the European Commission and the European Centre for Medium - Range Weather Forecasts have no liability in respect of this document, which is merely representing the author's view. |
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