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The planned timetable for the implementation of the cycle 50R1 is as follows:
| Date | Event |
|---|---|
| 12 May 2026 | Implementation |
The timetable represents current expectations and may change in light of actual progress made.
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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 |
Software
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 ECMWF HPC these versions correspond to ecmwf-toolbox/2025.1
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