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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.
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- Update of heterogeneous chemistry parameterization
- Revision of SO2 + H2O2 aqueous phase reaction
Impact of the new cycle
Technical details of the new cycle
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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 |
6 | 14 | generatingProcessIdentifier | soil moisture model | 146 | 146 |
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
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