# COSIMA TWG Meeting Minutes 2025

**URL:** <https://forum.access-hive.org.au/t/cosima-twg-meeting-minutes-2025/4067>\
**Category:** TWG\
**Tags:** cosima, meeting, twg, ocean, notes, minutes\
**Created:** [14 January 2025 05:58 UTC](https://forum.access-hive.org.au/t/cosima-twg-meeting-minutes-2025/4067 "2025-01-14T05:58:45Z")\
**Posts on this page:** 1\
**Showing post:** 11

<div class="post-metadata">

**Author:** ![ezhilsabareesh8](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.access-hive.org.au/ezhilsabareesh8/32/790_2.png) [@ezhilsabareesh8](https://forum.access-hive.org.au/u/ezhilsabareesh8)\
**Post date:** [22 May 2025 01:13 UTC](https://forum.access-hive.org.au/t/cosima-twg-meeting-minutes-2025/4067/11 "2025-05-22T01:13:50Z")

</div>

**Date:** May 21, 2025  
**Chair:** @cbull  
**Attendees:** @cbull, @dougiesquire, @helen, @ezhilabareesh8, @anton, @MartinDix, @AndyHoggAnu, @PaulSpence, @aekiss, @sofarrell

### **Ocean Team Survey**

- Ocean team survey is available [here](https://forms.office.com/pages/responsepage.aspx?id=XHJ941yrJEaa5fBTPkhkN4zb0RDpOZRLgFq9HUYSIO1UNkk1V0hUN1hDUTJTWDNCNTJXQkRWUTlDOS4u&route=shorturl)
- All staff, including those not formally in the ocean team, are encouraged to complete it.
- **Purpose:** To gather feedback on team collaboration and workflows. Responses will inform potential changes.

### **Model Development Meeting Planning**

- **Config Documentation Presentation** (Anton): To support other teams needing configuration documentation.
- **Release Definitions Discussion:** Clarify terms like _alpha_, _beta_, and _release_ across the organization.
- Config documentation discussion should be delayed until the documentation team finalizes a template.
- The release discussion could be informal and framed as sharing the ocean team’s experience.
- Potential to invite someone from the release team to participate.

### **Work Plan and Community Engagement**

- Hive forum discussion on workload and priorities is [here](https://forum.access-hive.org.au/t/feedback-on-access-nri-work-plan-fy2025-2026/4508/3)
- **SAC Feedback:** Emphasis on prioritizing an 8 km resolution model.
- **Concerns Raised:**
  - Risk of overcommitting to an 8 km alpha release by end of FY26.
  - Need to balance 25 km evaluation (for CM3) with community interest in 8 km.

- **Considerations:**
  - 25 km model is foundational for CM3 and must be evaluated first.
  - Community is more engaged with high-resolution Antarctic modeling (8 km).
  - Discussion on whether to proceed with 25 km and 8 km in parallel or sequentially.

### Evaluation Paper Planning

- **Purpose:** To formalize model evaluation, engage the community, and provide documentation.
- **Scope Discussion:**
  - Whether to focus on 25 km, 8 km, or include other configurations (e.g., WaveWatch III, Wombat).
  - Comparisons between OM2 and OM3, and potentially between OM3 resolutions.
  - Whether to publish a peer-reviewed paper or a technical report with DOI.

- **Community Engagement:**
  - Paper could encourage ECRs to contribute.
  - Need to ensure contributors to 25 km scripts are credited in future 8 km papers.

- **Action Items:**
  - Draft agenda for next week’s meeting to scope the paper.
  - Use Hive forum [here](https://forum.access-hive.org.au/t/access-om3-25km-model-evaluation-team-announce/4476/4) to coordinate and collect agenda items.

### **Alpha Release Status**

- **Goal:** Release a new alpha version this week to support Minghang’s work.
- **Status Update:**
  - Generic tracers: Complete
  - Build flags: Pending confirmation
  - MOM6 update: Awaiting merge
  - MOM6 metrics: Delayed

- **Next Steps:** Sprint planned to finalize configuration and documentation.

### **Mediterranean Sea Salinity Issue**

- **Problem:** Excessive salinity in the eastern Mediterranean in ESM 1.6 due to limited salt transport.
- **Findings:**
  - Bathymetry shows unrealistic depth and width at the Strait of Sicily.
  - Maximum depth is only 50m in UV grid, compared to ~300m in ACCESS-OM2 01

- **Recommendations:**
  - Adjust Sicily strait depth and possibly width to improve flow.
  - Compare salt transport and Nile runoff with ACCESS-OM2 01

### Next Steps

- Finalize alpha release
- Paul to invite broader community to the evaluation paper scoping meeting.
- Coordinate agenda and participation for evaluation paper meeting.

---

_[View the full topic](https://forum.access-hive.org.au/t/cosima-twg-meeting-minutes-2025/4067)._