Teleconference.17.18.October.2023

Task Team on Table Driven Code Forms (TT-TDCF)

Teleconference

• 17 and 18 October 12-14h UTC

Agenda (draft)

1. Opening and approval of agenda
2. Secretariat updates
3. Revisit actions from last meeting
4. Review of GRIB proposals
5. Review of BUFR proposals
6. Review of Common Code Tables proposals
7. AOB

Notes

Tuesday

• Marijana opened the meeting
• The team revisited actions from the last meeting
• Sebastien talked about options for drought index codes GRIB2/issues/221
• Lennart discussed recent changes to the GRIB2/issues/173
• The team discussed the plan for updating GRIB code table 4.2 and prefers to have the table change in between fast-track proposal
• Jeff Ator introduced new ocean and ice parameters GRIB2/issues/222
• Sebastien introduced GRIB2/issues/224, GRIB2/issues/225, GRIB2/issues/226
• Chris and Martin introduced their request for map GRIB to ISO 19111 Issue 187; a decision on how to move forward - see notes

Wednesday

Fast-track 2024-1 proposals

All notes are in the comment section of each issue.

GRIB2

1. Updates to facilitate needs in modelling for nuclear protection #173 (Lennart/Sebastien)*, in discussion
2. new entry for "Convectively-induced turbulence" in Code Table 4.2 #218 (Jeff), in validation
3. Additional entry of length or number of octets in GRIB2_Template_ csv-files #219 (Sybille), in discussion
4. Code Table 4.2 : adding new parameters #220 (Sebastien), preliminary, in discussion
5. Encoding of Drought indexes as defined by WMO Issue 221 (Sebastien)*, preliminary, in discussion
6. new ocean and ice parameters in Code Table 4.2, Discipline 10 Issue 222 (Jeff)*, in validation
7. new probability templates for large ensemble Issue 224 (Sebastien)*, in discussion
8. new templates for probability forecasts based on focal statistics Issue 225 (Sebastien)*, , in discussion
9. new section 4 template for further statistics on probabilities based on focal statistics Issue 226 (Sebastien)*, in discussion
10. new hydrology parameters in code Table 4.2 #227 (Sebastien), new

BUFR4

1. Update BUFRCREX_CodeFlag_en_01.csv Retrieval identifier Issue 182
2. New BUFR entries for representing ASCAT in BUFR Issue 184
3. Fix notes CSVs for Table D Category 1 Issue 183

CCT

1. CCT 08 request to identify TANSO-FTS2 instrument Issue 164
2. CCT 05 request to identify TANSO satellite Issue 163

Other Proposals

1. Divide CodeFlag_4_2.csv into multiple files #Issue 163 (Anna), in discussion
2. map GRIB to ISO 19111 Issue 187
3. Register GRIB with IANA Issue 175
4. Register BUFR with IANA Issue 140
5. Use of GRIB and BUFR registers in codes.wmo.int #23 (Anna)

Schedule for FT2024-1

• 15 Dec - Complete validations of proposals
• 15 Jan - Finalize all proposals
  • Validate and document (in issues) all proposals
  • 2-week window to prepare amendments
• 1 Feb - National Focal Point (NFP) review
  • submit amendments for endorsement and review
  • 2-month window for National Focal Point (NFP) review
• **1 April ** - WMO Adoption Procedure
  • 1.5-month window for final WMO adoption and publication
• **15 May ** - operational date (we are planning on releasing the machine-readable codes earlier)

see: https://github.com/wmo-im/wmo-im.github.io/wiki/Fast-Track-Schedules

Meeting schedule

• 17 and 18 October 2023
• 21 and 22 November 2023
• 12 December 2023
• ? January 2024

AOB

List of participants

TT-TDCF Members

No.	Name	Agency	17 Oct	18 Oct
1	Jeffrey ATOR	NOAA	X
2	Marijana CREPULJA (lead)	ECMWF	X
3	Simon Stuart ELLIOTT	EUMETSAT	X
4	Sergio Henrique Soares FERREIRA	National Institute for Space Research, Brazil	X
5	Tom KRALIDIS	Environment and Climate Change Canada
6	Sibylle KREBBER	DWD	X
7	Abderrazak LEMKHENTER	Météo Maroc
8	Marian MAJAN	HMEI
10	XUE Lei	CMA	X

Collaborators/Guests

Name	Agency	17 Oct	18 Oct
Sébastien VILLAUME	ECMWF	X
Antoine MERLE	EUMETSAT	X
Jakub Beer	HMEI	X
Lennart ROBERTSON	SMHI	X
Chris Little	UK Met	X
Martin Desruisseaux	GEOMATYS/OGC	X

WMO Secretariat

Name	17 Oct	18 Oct
Anna MILAN	X