Add 'accumulated precipitation' to atmospheric variables (1-01-01)

[amilan17]

Initial request

Accumulated precipitation was updated in OSCAR/Requirements in the summer of 2024. The initial request is to add 'accumulated precipitation' to the WIGOS atmospheric variables (1-01-01).

Amendment details

Instead of introducing a new term, the existing variable 210 is amended with a definition.

Notation	Name	Description
210	Amount of precipitation	The amount, usually expressed in millimeters or inches of liquid water depth, of the water substance that has fallen at a given point over a specified period of time. (source: AMS Glossary, https://glossary.ametsoc.org/wiki/Precipitation)

Requestor(s)

GCOS, OSCAR Requirements, @kpremec

Stakeholder(s)

Enter list of stakeholder(s).

Applications or Systems

• OSCAR/Surface
• OSCAR/requirements
• Radar/DB
• OceanOPS
• WHOS
• WDQMS
• GBON Compliance Monitor
• Other

Expected impact of change

LOW

Collaborators

David Berry provides two alternative sources essentially in support of the existing WMO code 210.

References

https://space.oscar.wmo.int/variables/view/accumulated_precipitation
https://codes.wmo.int/wmdr/ObservedVariableAtmosphere/210

Comments

This is similar to Amount of precipitation
which does not have a definition yet. A definition was added. OSCAR/Requirements is invited to adopt the existing code 210 (Amount of precipitation).

Publication(s)

Example: Manual on Codes (WMO-No. 306), Volume I.3, WMO Codes Registry, Code table 1-01-01

Validation

No response

[amilan17]

https://github.com/wmo-im/tt-wigosmd/wiki/Meeting.2024.10.24 notes:
@joergklausen taking responsiblity

[joergklausen]

The proposed variable is indeed synonymous to the existing variable (210). The following description is proposed:

"The amount, usually expressed in millimeters or inches of liquid water depth, of the water substance that has fallen at a given point over a specified period of time. (source: AMS Glossary, https://glossary.ametsoc.org/wiki/Precipitation)

It is suggested for the OSCAR/Space platform to adopt the name 'Amount of precipitation'.

[amilan17]

https://github.com/wmo-im/tt-wigosmd/wiki/Meeting.2024.11.21 notes:
Joerg presented proposal as in comments above

[david-i-berry]

See https://hydro.geodab.eu/hydro-ontology/concept/65 for the equivalent in the WHOS ontology.

We also have the CF convention definition, see https://vocab.nerc.ac.uk/standard_name/precipitation_amount/

[joergklausen]

hydro-ontology uses the existing term, but does not provide a definition.
The NERC name is consistent with WIGOS, but does not have the notion of time period, which I consider important.
Since no negative feedback was received, I have updated the proposal as presented on 20 Nov 2024.

[amilan17]

https://github.com/wmo-im/tt-wigosmd/wiki/Meeting.2025.01.16 notes:

• Joerg recommends adding a definition to "Amount of precipitation", the definition is from AMS glossary
• @joergklausen update branch
• @amilan17 coordinate feedback to EOSDE;

[amilan17]

It is advised to be consistent with the definition of precipitation in the cloud atlas (https://cloudatlas.wmo.int/en/glossary.html#P)

@kpremec will review WMO publications