Teleconference.2&3May.2023

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

Teleconference

• Tuesday, 2 May 12-14h UTC
• Wednesday, 3 May 11-13h UTC

Agenda

1. Opening and approval of agenda
2. Secretariat updates
3. Review of Common Code Tables proposals
4. Review of BUFR proposals
5. Review of GRIB proposals
6. AOB

Fast-track 2023-2 proposals

The team discussed the following proposals. All notes are in the comment section of each issue. (status text with * were discussed during meeting)

GRIB2

No.	GRIB2 Issue	Assignee	Status
1.	Updates to facilitate needs in modelling for nuclear protection #173	Marijana/Lennart	in progress*
2.	New section 4 templates for advanced surface tiling #191	Sebastien	in discussion
3.	New section 4 Templates for large ensembles #192	Sebastien	in discussion
4.	Code Table 4.2 : new entry for hydrology #193	Sebastien	in discussion
5.	Code Table 4.2 : new ocean wave parameters #194	Sebastien	in discussion
6.	Code Table 4.2 : new fire parameters #195	Sebastien	submitted
7.	Code Tables 4.1, 4.2 and 4.5: new entries for ERA6 and Destination Earth datasets #196	Sebastien	in discussion
8.	New section 3 grid template: The HEALPix grid #197	Sebastien	submitted
9.	Code Table 4.2, discipline 0, category 19: new entries for persistent contrails #198	Sibylle	in discussion*

BUFR4

No.	BUFR4 Issue	Assignee	Status
1.	Update to ELEMENT DESCRIPTOR column contents for 3-10-026 #153	Simon	in validation
2.	New Table D sequences for reporting biogeochemical measurements from Argo floats #155	Jon Turton	in validation
3.	BUFR Table for the variable Permafrost Temperature #157	Marijana	in discussion*
4.	BUFR Table D, New BUFR template for lighting observations from satellite #159	Marijana	in discussion*
5.	Proposal for new BUFR table entries for EPS-SG (EUMETSAT) : IASI-NG Level 2 and VII Level 2 #161	Simon, Antoine	in discussion*
6.	BUFR Table D 10, New BUFR template for satellite reflectance #158	Marijana	in discussion*
7.	BUFR table B descriptors for atmospheric composition #160	Marijana	in discussion*
8.	Table D 10, BUFR template for DMSP satellites #156	Marijana	in discussion*
9.	Table D 10, new BUFR Template for representation of UAS #163	Marijana	in discussion*
10.	BUFR table D and B, new entries for ground-based microwave radiometer data #162	Sibylle	in discussion*

CCT

No.	CCT Issues	Assignee	Status
1.	APEX_D RBR - Additions to Common Code Table C-3 Instrument make and type for water temperature profile measurements. #115	Victor Turpin	in validation*
2.	CCT-02 errors Issue 126	Anna	in validation*
3.	New entry for CCT C-3 - "Navis_EBR SBE" #128	Victor Turpin	in validation*
4.	CCT 05, new codes for DMSP-F01, DMSP-F02, DMSP-F03, DMSP-F04 #130	Marijana	in discussion*
5.	CCT 08, new code for SSH instrument #129	Marijana	in discussion*
6.	CCT 08, new codes for GIIRS series, AGRI series and GHI on FY-4 #131	Shirley Xuelei	in discussion*
7.	CCT 13, new international data sub-category for MW temperature/humidity sounding #132	Sibylle	in discussion*

Other Proposals

No.	Issues	Assignee	Status
1.	Divide CodeFlag_4_2.csv into multiple files #Issue 163	Anna
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

Recommended practice of GitHub issue management

• When a new proposal (issue) is created, the issue is generally assigned to the person who makes the proposal and put in "submitted" status.
• Once the team agrees to the general approach and decides to go to validation status, chair moves the issue to "in validation" status and the Secretariat creates a branch. If further discussion is necessary, the issue is moved to "in discussion" status.
• Once the team agrees to the final proposal, assignee consolidates the finalized the proposal in the original post, updates the branch, and post a comment saying "branch updated" with mention to Chair and the Secretariat. (Please do not change issue status.)
• Chair confirms that the proposal is finalized and the associated branch is updated, and moved the issue to the "validated" status.

Schedule for FT2023-2

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

Meeting schedule

• Tuesday, 2 May 12-14h UTC
• Wednesday, 3 May 11-13h UTC
• Tuesday, 6 June 12-14h UTC
• Wednesday, 7 June 11-13h UTC

AOB

List of participants

No.	Name	Agency	2 May	3 May
1	Jeffrey ATOR	NOAA	X	X
2	Marijana CREPULJA	ECMWF	X	X
3	Simon Stuart ELLIOTT	EUMETSAT	X	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	X
7	Abderrazak LEMKHENTER	Météo Maroc
8	Marian MAJAN	HMEI
9	Sébastien VILLAUME	ECMWF	X	X
10	Richard WEEDON	UK Met office
11	XUE Lei	CMA
17	Antoine MERLE	EUMETSAT	X	X
18	Victor TURPIN	OceanOPS
19	Ketil ISAKSEN	MetNO	X
20	Pål Harald Sannes	MetNO	X
21	Jon TURTON	UK Met Office
22	Lennart ROBERTSON	SMHI		X
23	Anna MILAN	WMO Secretariat	X	X
24	David BERRY	WMO Secretariat
25	Xiaoxia CHEN	WMO Secretariat
26	Rodica NITU	WMO Secretariat
27	Mark Hedley	UK Met Office	X	X