wmo-im
New variable - Nitrous oxide
Initial request
We are requesting to add the new variable Nitrous oxide which is part of ESAC-Ocean requirement in the RRR process.
Amendment details
Name: Nitrous oxide Definition: Nitrous oxide concentration in sea water.
Requestor(s)
ESAC-Ocean
Stakeholder(s)
GOOS, OCG and OceanOPS
Applications or Systems
- [X] OSCAR/Surface
- [X] OSCAR/requirements
- [ ] Radar/DB
- [X] OceanOPS
- [ ] WHOS
- [ ] WDQMS
- [ ] GBON Compliance Monitor
- [ ] Other
Expected impact of change
LOW
Collaborators
No response
References
GCOS 245 (https://library.wmo.int/idurl/4/58111)
Comments
The definition in GCOS 245 for nitrous oxide is slightly adopted to conform to the WIGOS entries for Nitrate and Phosphate.
Publication(s)
Manual on Codes (WMO-No. 306), Volume I.3, WMO Codes Registry - WMDR
Validation
No response
https://github.com/wmo-i/mtt-wigosmd/wiki/Meeting.2025.02.20 notes: Joerg noted that it is straight forward to add this to the Ocean variables and reusing the definitions
Suggested amendment, in line with the corresponding variable under Atmosphere:
| notation | path | label | description |
|---|---|---|---|
| tbd | ObservedVariableOcean | N2O (nitrous oxide) | IUPAC: nitrous oxide, PubChem CID: 948, CAS Number: 10024-97-2, concentration in sea water |
NB: A future amendment is likely in the context of migrating names to I-ADOPT compliant variable names.
https://github.com/wmo-im/tt-wigosmd/wiki/Meeting.2025.04.17 notes: Joerg presented revisions to this proposal for alignment with the same code in the atmosphere list; moved to in validation status
https://github.com/wmo-im/tt-wigosmd/wiki/Meeting.2025.06.12 notes:
@champikagallage please review branch