amilan17
commented
2 weeks ago https://github.com/wmo-im/tt-tdcf/wiki/2024.11.12.tt.tdcf notes:
- Sebastien introduced the proposal
- these parameters have been encoded in NetCDF and the NEMO ocean model at ECMWF
- Sibylle suggested adding a new category under discipline 10 instead of repeating parameters in multiple categories
Initial request
The parameter “Live fuel moisture content” (discipline=2, parameter category=4, parameter number =31) can be subdivided into a component for low and high vegetation. We propose to add these two additional entries.
The Obukhov Length (L) is a well-established parameter in boundary layer meteorology. We propose to add the reciprocal Obukhov length (1/L) because L can be infinite in certain cases of neutral stability.
ECMWF is also requesting a set of ocean parameters needed for our latest development so that more of the ocean output portfolio can be made available in GRIB. Note that due to the organisation of the oceanography discipline, we need to request the same parameter in 3 different categories.
Amendment details
Comments
No response
Requestor(s)
Sebastien Villaume (ECMWF) Robert Osinski (ECMWF) Matthew Griffith (ECMWF)
Stakeholder(s)
ECMWF
Publication(s)
Manual on Codes (WMO-No. 306), Volume I.2, GRIB code table 4.2, discipline 2, category 4 (update) Manual on Codes (WMO-No. 306), Volume I.2, GRIB code table 4.2, discipline 0, category 7 (update) Manual on Codes (WMO-No. 306), Volume I.2, GRIB code table 4.2, discipline 0, category 4 (update) Manual on Codes (WMO-No. 306), Volume I.2, GRIB code table 4.2, discipline 10, category 3 (update) Manual on Codes (WMO-No. 306), Volume I.2, GRIB code table 4.2, discipline 10, category 3 (update) Manual on Codes (WMO-No. 306), Volume I.2, GRIB code table 4.2, discipline 10, category 4 (update)
Expected impact of change
None
Collaborators
No response
References
No response
Validation
No response