ET‐ACDM‐2024‐6: 12‐September‐2024 - wmo-im/et-acdm GitHub Wiki

Date and Time

12 September 2024 11:00-12:30 UTC (13:00-14:30 CEST)

Venue

telecon

Participants

Markus Fiebig, Jörg Klausen, Debra Kollonige, Judd Welton, Tom Kralidis, Jeannette Wild, Alex Vermeulen, Kaisa Lakkala, Sergi Moreno

Notes

1. Approved minutes from previous meeting

Minutes ET-ACDM-2024-5

2. GAW updates from Secretariat

GAW’s Chair and Head visited China for the anniversary of Mt. Waliguan station. Plans for better collaboration with Fudan University and CMA.
Possibility of an ET-ACDM in-person meeting in 2025. Main topic: WDCs data submission information updated in GAWSIS/OSCAR. Linked to a possible project CAMS-GAW.
Study Group on Future Data Infrastructure (SG-FIT) Workshop | World Meteorological Organization (wmo.int)

3. Updates about open issues:

Project page created:

View 1 · WMO ET-WDC Action Items (github.com)

WOUDC has started to feed relevant information into the WIS 2.0 topic issue.

Action: All the WDCs: identify and add topics from your domains, that would be sufficient to start the discussion towards publication

Any questions, please contact Tom.

3. Follow up on GEOMS interoperability

Presentation from Ann Mari Fjaeraa.

Open question:

GEOMS is running for a while and could be a model for ozone data, is ET-ACDM going to endorse GEOMS?

From WOUDC:

GEOMS is the format while Data Center Interoperability (DCIO) deals with interactions and technical exchanges.

So far, the SAG O3 and UV has not endorsed GEOMS, so that should be the first step: 1-SAG support, 2-WDC support for input, 3-WDC support for output.

It would need a bit of work on managing outputs of existing data in extended CSV format.
From NASA Larc:

At campaigns with multiple instruments GEOMS format limits one file per instrument. It would be possible to combine some of these files, but not all. This means the user would need to combine files and that could be an issue.

Vocabulary issues exist but still can be mapped.
From WDCA/WDCRG/ACTRIS:

No issues with multiple instruments in one file because that would not abide provenance requirements.

GEOMS works well for the purpose it was created, however GEOMS presents some limitations:
1. Urban observations requiring additional metadata elements.
2. Obsolete vocabulary.
3. GEOMS governed by ESA and GEOMS community.
From GALION:

Governance due to small group of people.

New stations need to be validated in GEOMS.

Vocabulary for instrumentation insufficient and numbering instruments could be an issue.

Confusion about mandatory and optional variables. Issue with misunderstanding between variables and attributes.

Control process not clear, this could be a problem when expanding GEOMS to a wider user community.
From NDACC:

Concerns about governance, however adding new stations taking less than 24 hours.

Mandatory variables because of uniformity and to force PIs to add error bars.

NDACC instrument working groups collaborate closely and agree upon the required and optional variables.
From SHADOZ:

GEOMS supported unification of variables, and addition of uncertainty. Data is usually offered in both GEOMS and SHADOZ format.

Conclusions:

At the moment there is no quorum in ET-ACDM to endorse GEOMS as an exchange format.

GEOMS governance not established, there is a group of people (up to 10) meeting regularly and dealing with current issues, but no formal membership/organigram.

Action: Jeannette to contact Ann Mari and enquire for GEOMS ‘Control processes’ and ‘Management Team’.