CMIP7 Announce

This topic will be used for announcements related to CMIP7.

You need to watch this topic to receive new announcements via email notifications


To avoid individuals accidentally spamming the whole group, this topic is closed and only the leadership team should post replies.

If you have questions check if it has already been asked in the CMIP7 category and if not open a topic on the forum.

Using the forum

There are three short videos on the forum about using the forum:

  1. How to navigate the forum
  2. How to watch a topic to get updates
  3. How to create a topic

As well there are a number of other knowledge-base articles about using the forum .

Fast Track proposal v1 consultation

The CMIP panel is surveying modelling groups on the proposed Fast Track experiments that would be prioritised for IPCC. If you would like more information, please see Fast Track proposal v1 - CMIP7 / CMIP7 MIPs and other experiments - ACCESS Hive Community Forum ( You can also use that topic to provide any comments on the experiments for inclusion in the ACCESS survey response.

There will be a wider consultation step early next year on v2 of the Fast Track proposal.

CMIP7 at AMOS 2024

For those attending the AMOS 2024 conference, you are invited to a lunchtime session ‘Co-creating the Future CMIP’ facilitated by Julie Arblaster, Andy Hogg and Tilo Ziehn.

This lunchtime discussion will provide an update on the activities of the international CMIP Panel and Task Teams in planning for CMIP7, as well as recent progress towards the next generation of ACCESS (ACCESS-ESM3) that will form the basis of Australia’s CMIP7 submission. It will highlight opportunities to contribute as well as seek feedback from the Australian community’s wide and diverse range of CMIP users. Grab your lunch and come along.

That is on the 6 Feb, 1:00-2:00 pm, according with the Program

Will there be the option to participate online?


There won’t be an online option for the AMOS session. We could run a similar presentation/discussion in one of the Earth System, Coupled Working Group meetings if there is interest.

1 Like

Harmonised thematic variables - CMIP7 data request

The CMIP7 data request task team are looking for authors and reviewers for thematic papers to define a collection of harmonised variables to support high impact analysis of climate model output.

More information is available here: Climate Data Request Task Team - Coupled Model Intercomparison Project (

It would be great to have some Australian involvement in these papers.

1 Like

Fast Track proposal v2 now open for feedback

Following input from modelling centres, v2 of the Fast Track proposal is now available for feedback. The Fast Track is a set of experiments that are considered most relevant for IPCC AR7 needs. See Fast Track - CMIP7 / CMIP7 MIPs and other experiments - ACCESS Hive Community Forum ( for more information. Feedback is open to modelling centres and CMIP data users.

Update on CMIP7 plans

An update on CMIP7 plans was given at the Earth System Working Group meeting on 9th May 2024. The slides and notes are available here.

We are now aiming for two submissions to CMIP7:

  • ACCESS-ESM3 (with 0.25 degree ocean) and
  • ACCESS-ESM1.6 (with 1 degree ocean).

The addition of ACCESS-ESM1.6 is to ensure an ACCESS contribution to the CMIP7 Fast Track, given the tight timeline for this component of CMIP7. ACCESS-ESM1.6 is intended to be a relatively small upgrade to ACCESS-ESM1.5 to avoid (as much as possible) compromising the ACCESS-ESM3 CMIP7 effort, while acknowledging resource constraints.

If you are interested in the scope of ACCESS-ESM1.6 or in helping to run Fast Track experiments with ACCESS-ESM1.6, please provide input through the Hive Forum topic : ACCESS-ESM1.6 scope and use for CMIP7 Fast Track.

1 Like

Model Benchmarking Survey

This message came through the CMIP-IPO mailing list. Note that the survey deadline is tomorrow (May 17th).

"We write to share a survey created by the Model Evaluation Sub-group of Fresh Eyes on CMIP, in collaboration with the CMIP Model Benchmarking Task Team. We would greatly appreciate if you could complete our survey by May 17th, and we encourage you to share it with your colleagues who download, read and analyse CMIP data for model evaluation and benchmarking.

This survey will help the Fresh Eyes group and Task Team to identify how the community engages in CMIP model evaluation, and will allow them to explore, and make recommendations for, ways in which model evaluation could be better facilitated in future CMIP activities.

Access the survey"