Code table 4.2 and 4.238: new source/sink entries in code table 4.238 and a new parameter in code table 4.2, discipline 0, category 20

[sebvi]

Initial request

In the context of the development of the next atmospheric composition cycle, ECMWF is requesting a new parameter in code table 4.2 and several new entries to identify new source/sink origin.

Amendment details

ADD to code table 4.2: Product discipline 0 - Meteorological products, parameter category 20: atmospheric chemical constituents Parameter number	name	Unit
82	Sink mass flux	[kg m-2 s-1]
83	Source mass flux	[kg m-2 s-1]
84	Volume-mean total column mixing ratio	[mol mol**-1]
112	Absorption aerosol optical thickness	[Numeric]

ADD to code table 4.238 Code	Description
30	Commercial buildings heating
31	Residential heating
32	Oil refineries and transformation industry
33	Gas production
34	Vegetation
35	Biomass burning
36	Settlements
37	Soil
38	Wild animals

Comments

No response

Requestor(s)

Sebastien Villaume (ECMWF) Robert Osinski (ECMWF)

Stakeholder(s)

ECMWF

Publication(s)

Manual on Codes (WMO-No. 306), Volume I.2, GRIB code table 4.2, discipline 0, category 20 (update) Manual on Codes (WMO-No. 306), Volume I.2, GRIB code table 4.238 (update)

Expected impact of change

LOW

Collaborators

No response

References

No response

Validation

No response

[amilan17]

https://github.com/wmo-im/CCT/wiki/Teleconference.14.May.2024 notes: Sebastien introduced the proposal;

[sebvi]

added few entries we had forgotten

[amilan17]

https://github.com/wmo-im/CCT/wiki/Teleconference.2024.June.4and5 notes: Sebastien introduced the new entries; @sebvi change to Sink and Source after checking with colleagues

[sebvi]

branch created and update (forgot to chase colleagues about sink/source)

[amilan17]

https://github.com/wmo-im/CCT/wiki/Teleconference.24and26.June.2024 notes: branch is prepared, but there is still an outstanding question about sink and source vs loss/gain;

[amilan17]

https://github.com/wmo-im/CCT/wiki/Teleconference.24and26.June.2024 notes: Sebastien will update the proposal and branch with sink and source.