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Teleconference 29.6.2021

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

Teleconference 29.6.2021

Agenda

  1. Opening and approval of agenda
  2. Secretariat updates
  3. Review of GRIB proposals
  4. Review of BUFR proposals
  5. Review of Common Code Tables proposals
  6. Schedule of FT2022-1
  7. AOB

Secretariat Updates

Team will review following proposals. Finalized issues will not be discussed unless a request is made. Issues indicated by "Finalized (new)" were added and approved after the meeting, dealing with only editorial corrections/changes.

No. GRIB2 Issue Link Assignee Status
1. Issue 84 Extend local time template to ensembles, postprocessed forecasts and average, accumulated or other statistically processed values https://github.com/wmo-im/GRIB2/issues/84 Sébastien Sample and dump files are provided, branch will be updated, in validation status
2. Issue 89 surface adjusted wind (UK) https://github.com/wmo-im/GRIB2/issues/89 Richard pending
3. Issue 106 code table 4.2: new hydrological parameters, part 2 https://github.com/wmo-im/GRIB2/issues/106 Sébastien Checking status
4. Issue 108 Convective lightning potential index https://github.com/wmo-im/GRIB2/issues/108 Sibylle Checking status
5. Issue 63 Question: use of Product Definition Templates and Code Table 4.2 for Aerosols vs chemical constituents. https://github.com/wmo-im/GRIB2/issues/63 Sébastien Discussing solution, is it enough to add to category 13 saying that this category has stopped being populated in the PDF version?
Withdrawn Issue 83 Validate Product definition template 4.10 https://github.com/wmo-im/GRIB2/issues/83 Richard Met Office has withdrawn this request
Finalized Issue 79 Discipline 4, category 2 table: code entry 8 https://github.com/wmo-im/GRIB2/issues/79 Abde Contents validated, branch updated, moved to validated status
Finalized Issue 33 GRIB Mercator grid types https://github.com/wmo-im/GRIB2/issues/33 Abde Contents validated, branch updated, moved to validated status
Finalized Issue 81 Add code table entry for character of precipitation https://github.com/wmo-im/GRIB2/issues/81 Tom Contents validated, branch updated, moved to validated status
Finalized Issue 82 Add new codes for thermal stress indicators https://github.com/wmo-im/GRIB2/issues/82 Tom Note added only in PDF, branch is being updated, moved to validated status
Finalized Issue 85 New GRIB2 code Table 4.2 entries requested by Norway https://github.com/wmo-im/GRIB2/issues/85 Sébastien Contents validated, branch updated, moved to validated status
Finalized Issue 86 New hydrological parameters in Code Table 4.2 https://github.com/wmo-im/GRIB2/issues/86 Sébastien Two parameters (Snow melt rate, Water runoff and drainage rate) are validated, branch updated, moved to validated status. The other three parameters are moved to a new issue wmo-im/GRIB2#106 to consult with hydrology community.
Finalized Issue 95 new parameter "Solar induced chlorophyll fluorescence" for atmospheric composition modelling https://github.com/wmo-im/GRIB2/issues/95 Sébastien Contents validated, branch updated, moved to validated status
Finazlied Issue 96 additional ocean parameters and levels https://github.com/wmo-im/GRIB2/issues/96 Sébastien Contents validated, branch updated, moved to validated status
Finalized Issue 92 code table 4.10: Most severe and most frequent precipitation type over a time period https://github.com/wmo-im/GRIB2/issues/92 Sébastien Proposal updated, issue title updated, contents validated, branch updated, moved to validated status
Finalized Issue 87 Wet Bulb Potential Temperature (UK) https://github.com/wmo-im/GRIB2/issues/87 Richard Contents validated, branch updated, moved to validated status
Finalized Issue 88 cloud water mixing ratio (UK) https://github.com/wmo-im/GRIB2/issues/88 Richard Contents validated, branch updated, moved to validated status
Finalized Issue 90 upward UV radiation (UK) https://github.com/wmo-im/GRIB2/issues/90 Richard Contents validated, branch updated, moved to validated status
Finalized Issue 91 convective cloud level (UK) https://github.com/wmo-im/GRIB2/issues/91 Richard Contents validated, branch updated, moved to validated status
Finalized Issue 93 publish codes for 4.2, product discipline 20 to manual https://github.com/wmo-im/GRIB2/issues/93 Anna Contents validated, will be reflected in the next PDF publication (no change in CSVs), moved to validated status
Finalized (new) Issue 99 Publish missing code table 4.228 to PDF manual https://github.com/wmo-im/GRIB2/issues/99 Anna Contents validated, will be reflected in the next PDF publication (no change in CSVs), moved to validated status
Finalized (new) Issue 19 Publish missing Space Weather codes to PDF manual https://github.com/wmo-im/GRIB2/issues/19 Anna Contents validated, will be reflected in the next version of PDF publication (no change in CSVs?), moved to validated status
Finalized (new) Issue 74 GRIB2_CodeFlag_4_2_CodeTable_en.csv: unit for code 19 https://github.com/wmo-im/GRIB2/issues/74 Anna Contents validated, will be reflected in the next version of CSVs (no change in PDF publication), moved to validated status
Finalized (new) Issue 107 Template 4.88: editorial change required "Code Table 2.248 -> Code Table 4.248" https://github.com/wmo-im/GRIB2/issues/107 Anna Contents validated, will be reflected in the next version of CSVs and in PDF publication, moved to validated status

Team will review following proposals. Finalized issues will not be discussed unless a request is made. Issues indicated by "Finalized (new)" were added and approved after the meeting, dealing with only editorial corrections/changes.

No. BUFR4 Issue Link Assignee Status
1. Issue 51 BUFR sequence for DAYCLI https://github.com/wmo-im/BUFR4/issues/51 Sergio Code table of quality information was finalized with 8 bits. Chairs of ET-DRC and TT-TDCF have agreed to have more validation on time slots with more examples of time zones. This issue will be approved in FT2022-1.
2. Issue 65 BUFR template for representation of ground based lidar observations https://github.com/wmo-im/BUFR4/issues/65 Marijana Proposal updated to be aligned with the existing sequence for single wavelength ground based lidar observations (3 09 026), contents validated, branch updated?, sample will be provided and validated by Met Office, in validation status
3. Issue 16 New Table D sequence for reporting observations from ocean gliders https://github.com/wmo-im/BUFR4/issues/16 Dave Validation will be completed in the next cycle of the FT.
4. Issue 55 non-CCITTIA5 characters in GitHub .csv file https://github.com/wmo-im/BUFR4/issues/55 Jeff For diacritic characters, one column will be added to CSVs to keep original and alternate printable CCITTIA5 version (chosen case-by-case), branch updates in progress and will be completed by June, moved to in validation status, guidance document is required for future proposals
5. (new) Issue 73 Missing entries in BUFRCREX CodeFlag https://github.com/wmo-im/BUFR4/issues/73 Sibylle Proposal updated, contents validated, branch updated, checking details
Finalized (new) Issue 68 Ambiguity in code table entries for 0-20-063 https://github.com/wmo-im/BUFR4/issues/68 Simon Proposal updated, contents validated, branch updated, moved to validated status
Finalized (new) Issue 54 BUFRCREX CodeFlag 33: disconnect between EUMETSAT ROMSAF documentation and WMO documentation re: 0-33-039 flag table https://github.com/wmo-im/BUFR4/issues/54 Jeff Proposal updated, contents validated, branch updated, moved to validated status
Finalized Issue 56 apparent paradox in BNF attachment for FM-94 BUFR in WMO 306 manual https://github.com/wmo-im/BUFR4/issues/56 Jeff Remove entire chapter 3, will be reflected in the next PDF publication (no change in CSVs), moved to validated status
Finalized Issue 63 Proposal for new BUFR descriptor extended integrated mass density https://github.com/wmo-im/BUFR4/issues/63 Marijana Proposal updated, contents validated, branch updated, moved to validated status
Finalized Issue 64 New code for Volcanic sulphur dioxide https://github.com/wmo-im/BUFR4/issues/64 Marijana Contents validated, branch updated, moved to validated status
Finalized Issue 66 New BUFR descriptor and code table for Retrieval identifier https://github.com/wmo-im/BUFR4/issues/66 Marijana Proposal updated to 8 bits and to include only one entry at this moment, contents validated, branch updated, moved to validated status
Finalized (new) Issue 79 New data category Lidar (ground based) in BUFR Table A https://github.com/wmo-im/BUFR4/issues/79 Marijana Derived from wmo-im/CCT#53, contents validated, branch updated, moved to validated status

Team will review following proposals. Finalized issues will not be discussed unless a request is made.

No. CCT Issue Link Assignee Status
1. Issue 52 Add new entry in Common Code Table C12 to identify Saint-Denis (Réunion) as a sub-centre for Lannion (France) https://github.com/wmo-im/CCT/issues/52 Yann Contents validated (printable CCITTIA5 version: Saint-Denis (Reunion)), branch will be rebased in alignment with the discussion of wmo-im/BUFR4#55 and updated, in validation status
2. Issue 53 New data category for Lidar (ground based) in Common Code Table C–13 https://github.com/wmo-im/CCT/issues/53 Marijana A new sub-category was added in BUFR Table A as separated issue wmo-im/BUFR4#79, contents validated, branch updated, checking details
Finalized Issue 50 Add new entry to Common Code Table C-5 to identify Nimbus-1 and Nimbus-2 satellite https://github.com/wmo-im/CCT/issues/50 Marijana Contents validated, branch updated, moved to validated status
Finalized Issue 51 Add new entries to Common Code Table C-8 to identify rescued data from Spascia https://github.com/wmo-im/CCT/issues/51 Marijana Confirmed by CGMS TF, contents validated, branch updated, moved to validated status
Finalized Issue 55 new chemical constituents/aerosols https://github.com/wmo-im/CCT/issues/55 Sébastien Contents validated, branch updated, moved to validated status
Finalized Issue 57 new entry in CCT-13 for marine surface drones https://github.com/wmo-im/CCT/issues/57 Jeff Contents validated, branch updated, moved to validated status

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, asignee 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 FT2022-1

The schedule for FT2022-1 is under discussion between Chair and the Secretariat.

  • One 1.5 hour meeting to confirm schedule: September 14
  • Deadline for submission of proposals: September 30
  • Two 2-hour meetings to review new proposals: October 5-6
  • Two 2-hour meetings to conclude the proposals: November 9-10
  • Deadline for validation (if not completed by the meeting above): December 11
  • One additional meeting to finalize remaining issues if necessary: December 14
  • National Focal Point review: mid-January
  • WMO adoption process: mid-March
  • Codes are officially operational: mid-May

AOB

List of participants

No. Name Agency June 29
1 Jitsuko HASEGAWA JMA X
2 Enrico FUCILE WMO Secretariat
3 Abderrazak LEMKHENTER Météo Maroc
4 Fang ZHAO CMA X
5 Sergio Henrique Soares FERREIRA National Institute for Space Research, Brazil X
6 Tom KRALIDIS Environment and Climate Change Canada
7 Jeffrey ATOR NOAA X
8 Sibylle KREBBER DWD
9 Richard WEEDON Met office X
10 Sébastien VILLAUME ECMWF X
11 Marijana CREPULJA ECMWF X
12 Simon Stuart ELLIOTT EUMETSAT
13 Marian MAJAN HMEI
14 David Berry NOC X
15 Denis STUBER France, ET-DRC
16 Christina Lief USA, ET-DRC
17 Anna MILAN WMO Secretariat X
18 Xiaoxia CHEN WMO Secretariat X
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