# Experiment Proposal: ACCESS-ESM1.6 DAMIP runs for CMIP7

**URL:** <https://forum.access-hive.org.au/t/experiment-proposal-access-esm1-6-damip-runs-for-cmip7/6520>\
**Category:** Experiments\
**Tags:** experiment, working-group, esm, proposal\
**Created:** [19 June 2026 03:34 UTC](https://forum.access-hive.org.au/t/experiment-proposal-access-esm1-6-damip-runs-for-cmip7/6520 "2026-06-19T03:34:55Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ctychung](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.access-hive.org.au/ctychung/32/586_2.png) [@ctychung](https://forum.access-hive.org.au/u/ctychung)\
**Post date:** [19 June 2026 03:34 UTC](https://forum.access-hive.org.au/t/experiment-proposal-access-esm1-6-damip-runs-for-cmip7/6520/1 "2026-06-19T03:34:55Z")

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**Experiment title 🔔:** ESM1.6 DAMIP runs for CMIP7

**Summary 🔔:** Production runs for the Detection Attribution MIP for CMIP7

**Scientific motivation:**

The Detection and Attribution Model Intercomparison Project (DAMIP) is part of the **[Coupled Model Intercomparison Project Phase 6 (CMIP6)](https://www.google.com/url?q=http%3A%2F%2Fwww.wcrp-climate.org%2Fwgcm-cmip%2Fwgcm-cmip6&sa=D&sntz=1&usg=AOvVaw0zV9g4Flhtg9GH5jJ-rsUa)**, a coordinated international effort “to better understand past, present and future climate changes arising from either natural, unforced variability or in response to changes in radiative forcing in a multi-model context.”

DAMIP is the component of CMIP6 dealing with understanding the individual contributions of various external factors to past and future changes in global and regional climate. The primary goals of DAMIP are to facilitate improved estimation of the contributions of anthropogenic and natural forcing changes to observed global warming as well as to observed global and regional changes in other climate variables; to contribute to the estimation of how historical emissions have altered and are altering contemporary climate risk; and to facilitate improved observationally-constrained projections of future climate change.

**Experiment Name 🔔:** esm16\_damip  
**People 🔔:** Christine Chung, Zoe Gillett, Ghyslaine Boschat, Rachel Law, Tilo Ziehn, in collaboration with colleagues in NESP  
**Model: ACCESS-ESM1.6**  
**Configuration:** 3x single forcing configurations (GHG-only, aerosol-only, natural-only)  
**Initial conditions:** Simulations will be branched from  
**Run plan:** 3 ensemble members per configuration (9 in total) - 185 years per member  
**Simulation details:**

The model will be run over the Historical period with a slight overlap into the future (1850-2035) under three configurations (GHG-only, aerosol-only and natural-only) to isolate the impacts of these forcings. Each configuration will consist of 3 members. The future forcings would come from the Medium scenario. These runs will form part of the ACCESS consortium’s official submission to the CMIP7 Assessment Fast Track.

**Total KSUs required 🔔:** 1.665 MSU (~1kSU per year x 185 years x 9 members)  
**Total storage required 🔔: None from lg87.** Output is 31.6 TB, but can be written to p66 scratch initially  
**Storage lifetime 🔔:** Around 6 months, until it can be post-processed and archived.  
**Long term data plan 🔔:** To be stored on NCI ESGF node once post-processed  
**Outputs:** Standard CMIP7 variables  
**Restarts:** TBC  
**Related articles:**

**Analysis:**

**Conclusion:**

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**Author:** ![spencerwong](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.access-hive.org.au/spencerwong/32/1894_2.png) [@spencerwong](https://forum.access-hive.org.au/u/spencerwong)\
**Post date:** [29 June 2026 05:24 UTC](https://forum.access-hive.org.au/t/experiment-proposal-access-esm1-6-damip-runs-for-cmip7/6520/2 "2026-06-29T05:24:10Z")

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Hi @ctychung, thanks volunteering to run these experiments! We’re currently waiting for the forcing data for the medium scenario to be released, which is required for the final section of the DAMIP runs. Once those are ready we I’ll get back to you and we can continue with setting up the experiments.

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**Author:** ![ctychung](https://sea2.discourse-cdn.com/flex020/user_avatar/forum.access-hive.org.au/ctychung/32/586_2.png) [@ctychung](https://forum.access-hive.org.au/u/ctychung)\
**Post date:** [29 June 2026 06:49 UTC](https://forum.access-hive.org.au/t/experiment-proposal-access-esm1-6-damip-runs-for-cmip7/6520/3 "2026-06-29T06:49:49Z")

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Thanks Spencer. @RachelLaw had mentioned that it would be good to get a headstart with running up to 2021 first, and then add on the last few years when the medium forcing becomes available