Data available: 0.1° 1958-2018 ACCESS-OM2 IAF run


25TB of model output data from a 1958-2018 spinup run with COSIMA’s ACCESS-OM2-01 0.1-degree global coupled ocean – sea ice model is now available for anyone to use (see conditions below) on this path at NCI:


You will need to be a member of the ik11 group for access – apply at if needed.

The 01deg_jra55v140_iaf spinup was run under interannually-varying JRA55-do v1.4.0 forcing from 1 Jan 1958 to 31 Dec 2018, starting from rest with World Ocean Atlas 2013 v2 climatological temperature and salinity. The run configuration is based on that used for Kiss et al. (2020) but has many improvements which will be documented soon.

There are many outputs available for the entire run, with additional outputs also enabled for the later years (see below for details).
MOM5 ocean model outputs are saved under self-explanatory filenames in
and CICE5 outputs are in
(there are too many files to list with ls, so narrow it down, e.g. by including the year, e.g. *2000*.nc)
We recommend using the COSIMA Cookbook to access and analyse this data:

In addition, from 1 Jan 1987 to 31 Dec 2018 we have daily-mean 3d temp, salt, u, v and wt data. However, this is currently stored at
and not yet available on /g/data/ik11 (to access this you will need to be a member of project x77 – apply here). It amounts to 51TB and we are considering ways to reduce this storage requirement, for example by restricting the geographical or depth or time range, reducing numerical precision or vertical resolution, and/or averaging over longer time intervals. If you have an interest in this daily 3d data please let us know what form of data reduction is compatible with your needs.

Annual restarts (on 1 Jan each year) are also available at
for anyone who may wish to re-run a segment with different diagnostics or branch off a perturbation experiment.
Summary details of each submitted run are tabulated (and searchable) here and the model configuration used for the spinup is here.

Conditions of use:
We request that users of this or other COSIMA model code or output data:

    1. consider citing Kiss et al. (2020) []
    2. include an acknowledgement such as the following:
      The authors thank the Consortium for Ocean-Sea Ice Modelling in Australia (COSIMA;, for making the ACCESS-OM2 suite of models available at Model runs were undertaken with the assistance of resources from the National Computational Infrastructure (NCI), which is supported by the Australian Government.
    3. let us know of any publications which use these models or data so we can add them to our list

Details of model outputs available at /g/data/ik11/outputs/access-om2-01/01deg_jra55v140_iaf
You may find this partial list of diagnostics useful for decoding the MOM diagnostic names.

  • 1 Jan 1958 to 31 Dec 2018
    • MOM ocean data
      • Daily mean 2d bottom_temp, frazil_3d_int_z, mld, pme_river, sea_level, sfc_hflux_coupler, sfc_hflux_from_runoff, sfc_hflux_pme, surface_salt, surface_temp
      • Monthly mean 3d age_global, buoyfreq2_wt, diff_cbt_t, dzt, pot_rho_0, pot_rho_2, pot_temp, salt, temp_xflux_adv, temp_yflux_adv, temp, tx_trans, ty_trans_nrho_submeso, ty_trans_rho, ty_trans_submeso, ty_trans, u, v, vert_pv, wt
      • Monthly mean 2d bmf_u, bmf_v, ekman_we, eta_nonbouss, evap_heat, evap, fprec_melt_heat, fprec, frazil_3d_int_z, lprec, lw_heat, melt, mh_flux, mld, net_sfc_heating, pbot_t, pme_net, pme_river, river, runoff, sea_level_sq, sea_level, sens_heat, sfc_hflux_coupler, sfc_hflux_from_runoff, sfc_hflux_pme, sfc_salt_flux_coupler, sfc_salt_flux_ice, sfc_salt_flux_restore, surface_salt, surface_temp, swflx, tau_x, tau_y, temp_int_rhodz, temp_xflux_adv_int_z, temp_yflux_adv_int_z, tx_trans_int_z, ty_trans_int_z, wfiform, wfimelt
      • Monthly mean squared 3d u, v
      • Monthly max 2d mld
      • Monthly min 2d surface_temp
      • Daily snapshot scalar eta_global, ke_tot, pe_tot, rhoave, salt_global_ave, salt_surface_ave, temp_global_ave, temp_surface_ave, total_net_sfc_heating, total_ocean_evap_heat, total_ocean_evap, total_ocean_fprec_melt_heat, total_ocean_fprec, total_ocean_heat, total_ocean_hflux_coupler, total_ocean_hflux_evap, total_ocean_hflux_prec, total_ocean_lprec, total_ocean_lw_heat, total_ocean_melt, total_ocean_mh_flux, total_ocean_pme_river, total_ocean_river_heat, total_ocean_river, total_ocean_runoff_heat, total_ocean_runoff, total_ocean_salt, total_ocean_sens_heat, total_ocean_sfc_salt_flux_coupler, total_ocean_swflx_vis, total_ocean_swflx
    • CICE sea ice data
      • Daily mean 2d aice, congel, dvidtd, dvidtt, frazil, frzmlt, hi, hs, snoice, uvel, vvel
      • Monthly mean 2d aice, alvl, ardg, congel, daidtd, daidtt, divu, dvidtd, dvidtt, flatn_ai, fmeltt_ai, frazil, frzmlt, fsalt, fsalt_ai, hi, hs, iage, opening, shear, snoice, strairx, strairy, strength, tsfc, uvel, vvel
  • 1 Jan 1987 to 31 Dec 2018 only
    • MOM ocean data
      • monthly mean 3d bih_fric_u, bih_fric_v, u_dot_grad_vert_pv
      • daily mean 3d salt, temp, u, v, wt (not yet available on ik11 – see above)
    • CICE sea ice data
      • daily mean 2d aicen, vicen
  • 1 Jan 2012 to 31 Dec 2018 only
    • MOM ocean data
      • monthly snapshot 2d sea_level
      • monthly snapshot 3d salt, temp, u, v, vert_pv and vorticity_z


COSIMA 2019 Report

This report summarises the fourth meeting of the Consortium for Ocean Sea Ice Modelling in Australia (COSIMA), held in Canberra on 3-4 September 2019. Shweta Sharma has provided a more informal (and entertaining) report here.

Aims & Goals

The annual COSIMA workshop aims to:

  • Maintain and grow the established community around ocean-sea ice modelling in Australia;
  • Discuss recent scientific advances in ocean and sea ice research in a forum that is inclusive and model-agnostic, particularly including observational programs;
  • Agree on immediate next steps in the COSIMA model development plan; and
  • Develop a long-term vision for ocean-sea ice model development to support Australian researchers.


Attendees included Alberto Alberello (U Adelaide), Christopher Bladwell (UNSW), Fabio Boeira Dias (UTAS/CSIRO), Gary Brassington (BOM), Matt Chamberlain (CSIRO), Navid Constantinou (ANU), Prasanth Divakaran (BOM), Kelsey Druken (NCI), Matthew England (UNSW), Ben Evans (NCI), Hakase Hayashida (IMAS, UTAS), Petra Heil (AAD & AAPP), Andy Hogg (ANU), Ryan Holmes (UNSW), Maurice Huguenin (UNSW), Yi Jin (CSIRO), Andrew Kiss (ANU), Andreas Klocker (UTAS), Qian Li (UNSW), Kewei Lyu (CSIRO), Simon Marsland (CSIRO), Josue Martinez Moreno (ANU), Richard Matear (CSIRO), Ruth Moorman (ANU), Adele Morrison (ANU), Eric Mortenson (CSIRO), Jemima Rama (ANU), Paul Sandery (CSIRO), Abhishek Savita (UTAS/IMAS/CSIRO), Callum Shakespeare (ANU), Shweta Sharma (UNSW), Callum Shaw (ANU), Taimoor Sohail (ANU), Paul Spence (UNSW), Kial Stewart (ANU), Veronica Tamsitt (UNSW), Mirko Velic (BOM), Nick Velzeboer (ANU), Jingbo Wang (NCI), Xuebin Zhang (CSIRO), Xihan Zhang (ANU), Aihong Zhong (BOM), plus those who attended via video conference.


Tuesday 3rd September

Session 1 (Chair – Navid Constantinou)

Andrew Kiss (ANU): ACCESS-OM2 update
Simon Marsland (CSIRO): ACCESS and CMIP6
Hakase Hayashida (IMAS, UTAS): Preliminary results of biogeochemistry simulation with ACCESS-OM2 and plans for OMIP-BGC and IAMIP
Ben Evans (NCI): Addressing the next HPC challenges for Climate and Weather

Session 2 (Chair – Andreas Klocker)

Veronica Tamsitt (UNSW): Lagrangian pathways and residence time of warm Circumpolar Deep Water on the Antarctic continental shelf
Ruth Moorman (ANU): Response of Antarctic ocean circulation to increased glacial meltwater
Kewei Lyu (CSIRO): Southern Ocean heat uptake and redistribution in theoretical framework and model perturbation experiments
Fabio Boeira Dias (UTAS/CSIRO): High-latitude Southern Ocean response to changes in surface momentum, heat and freshwater fluxes under 2xCO2 concentration

Session 3 (Chair – Simon Marsland)

Xuebin Zhang (CSIRO): Dynamical downscaling of climate changes with OFAM3
Matt Chamberlain (CSIRO): Multiscale data assimilation in Bluelink Reanalysis
Paul Sandery (CSIRO): A data assimilation framework for ocean-sea-ice prediction
Prasanth Divakaran (Bureau of Meteorology): OceanMAPS 3.3 Developments

Wednesday 4th September

Session 4 (Chair – Veronica Tamsitt)

Ryan Holmes (UNSW):  Atlantic ocean heat transport enabled by Indo-Pacific heat uptake and mixing
Eric Mortenson (CSIRO): Decoupling of carbon and heat uptake rates of the global ocean over the 21st century
Christopher Bladwell (UNSW): Diahaline transport in global ocean models
Abhishek Savita (UTAS, IMAS, CSIRO): Uncertainty in the estimation of global and regional ocean heat content since 1970
Gary Brassington (BOM): Comparison of ACCESS-OM2-01 to other models and observations

Session 5 (Chair – Qian Li)

Xihan Zhang (ANU): Gulf Stream separation in ACCESS-OM2
Alberto Alberello (U Adelaide): Impacts of winter cyclones on sea ice dynamics
Petra Heil (AAD): Sea ice in the ACCESS-OM2-01: Exploring near-coastal processes

COSIMA Discussion (Chair – Paul Spence)

Open discussion highlighted a number of potential avenues for work in the near-term, as well as some suggestions for directions that could be included in a future COSIMA funding bid.

Near-term Priorities

  • Running the COSIMA cookbook on the VDI is becoming untenable, and recent improvements in the cookbook have not been widely adopted. This should be a priority, possibly with a tutorial session at the CLEx Annual Workshop?
  • Start investigating coupled data assimilation for parameter estimation, especially for sea ice.
  • Start serious perturbation experiments with ACCESS-OM2-01, potentially including:
    • SAMx (RYF forcing with SAM Extreme Years).
    • Adding katabatic winds?
    • Tropical mixing and the AMOC.
    • Influence of the Amundsen Sea Low on the Southern Ocean.
    • Turbulent Kinetic Energy and winds in the Southern Ocean.
  • OMIP2 contribution for CMIP6.
  • Improve communication of COSIMA achievements.
  • Begin work on nesting regional MOM6 models.

Longer term suggestions

  • Better connection with Paleo community.
  • Improve links with the wave community.
  • Start running ensemble simulations?
  • Do we need to move to CICE6?
  • Capacity to run future scenarios based on coupled model output.

It was agreed that COSIMA V will be held in 2020, hosted by Xuebin Zhang in Hobart.

Additional discussion points are given here.


The COSIMA Most Selfless Contributor Awards for 2017, 2018 and 2019 were presented in absentia to

  • 2017 James Munroe
  • 2018 Marshall Ward
  • 2019 Russ Fiedler (pictured)

in appreciation of their tireless efforts which have greatly improved the software used by the COSIMA community.

SAM cluster workshop, 20 – 21 Feb 2019 – UPDATED

UPDATE: see here for additional details including the workshop program.

SAM cluster workshop

When: 20 – 21 February 2019

Where: Hobart

Hi all,

As you know we are keen to have a workshop in February of this group and after many discussions with people at the workshop and various others we have decided to hold it in Hobart from Wednesday February 20 – Thursday February 21. This overlaps with a sea-ice modelling workshop being held on Tuesday February 19, with the idea that the Wednesday morning will be a joint session between the two on SAM/sea-ice topics then lead into other ‘SAM’ topics from Wednesday afternoon through to Thursday. We will end the workshop early enough on Thursday afternoon so that everyone should be able to travel home that evening.

Given one of our main goals for the ‘SAM cluster’ is to bring together the atmos-ocean-ice communities interested in the SH extratropics, this will be a great opportunity to bring us together with sea-ice modellers.

Apologies for those for which these dates and venues don’t suit. We will try our best to ensure that video-conferencing is available for those who would like to join remotely. So for now, save the dates and I’ll put together a more detailed workshop announcement in the coming days.

Julie, Matt, Andy and Nerilie

Sea-ice workshop, 19-20 Feb 2019 – UPDATED

UPDATE: see here for additional details including the workshop program.

Sea-Ice Modelling Workshop

When: 19-20 Feb 2019 – UPDATED

Where: ACE CRC, Hobart, Tasmania

The purpose of this workshop is to bring together the (Australian) community interested in sea-ice modelling and related aspects. This includes modelling efforts under the COSIMA and/or ACCESS initiatives, sea-ice assimilation or forecasting, sea-ice model parameterizations as well as process related modelling studies, such as ice-floe distribution, turbulence in sea-ice drift or wave-ice interaction. There will be discussion on requirements for observational data for model verification and assimilation.

We note that this workshop has been scheduled to coincide with the visit of Dr Elizabeth Hunke from the Los Alamos National Laboratory, USA. Elizabeth has been the lead developer for the Los Alamos Sea Ice Model (CICE), and is now heading the CICE Consortium in sea-ice model development.

We invite contributions for oral or poster presentation covering the following aspects with focus on sea-ice modelling:

• stand-alone and coupled sea-ice modellings;
• sea-ice processes and feedbacks;
• observational and/or model studies of sea-ice trends and variability;
• observations for models (incl. verification);
• data assimilation and forecasting;
• predictability; and
• user needs.

Pls reply to me by 15 Dec 2018, if you are interested to attend. — Pls note that the SAM cluster workshop will be held right after the sea-ice workshop. We plan to hold a joint session on Wed (20 Feb) morning.

Also, if you cannot travel to Hobart, but would like to participate via remote access, pls let me know too.

With best wishes,
Petra Heil

Dr. Petra Heil
AAD and ACE CRC – Glaciology
University of Tasmania
Private Bag 80
Hobart, Tasmania 7001
email: Petra.Heil”at”
phone: ++ 61 – 3 – 6232 3124

COSIMA 2018 Report

Aims & Goals

The third meeting of the Consortium for Ocean Sea Ice Modelling in Australia (COSIMA) was held in Canberra on 7-8 May 2018. This annual COSIMA workshop aims to:

  • Establish a community around ocean-sea ice modelling in Australia;
  • Discuss recent scientific advances in ocean and sea ice research in a forum that is inclusive and model-agnostic, particularly including observational programs;
  • Agree on immediate next steps in the COSIMA model development plan; and
  • Develop a long-term vision for Australian scientific advances in this area.


The 2018 workshop is our largest workshop yet, with 30 talks and 49 participants.

Attendees included:

Gary Brassington (Bureau of Meteorology), Matt Chamberlain (CSIRO), Chris Chapman (CSIRO), Fabio Dias (UTAS/CSIRO), Prasanth Divakaran (Bureau of Meteorology), Peter Dobrohotoff (CSIRO), Catia Domingues (UTAS), Matthew England (UNSW), Russ Fiedler (CSIRO), Annie Foppert (CSIRO), Leela Frankcombe (UNSW), Bishakhdatta Gayen (ANU), Angus Gibson (ANU), Stephen Griffies (NOAA/GFDL), Nicholas Hannah (COSIMA), Aidan Heerdegen (ANU/CLEX), Petra Heil (AAD & ACE CRC), Andy Hogg (ANU), Ryan Holmes (UNSW), Shane Keating (UNSW), Andrew Kiss (ANU), Vassili Kitsios (CSIRO), Veronique Lago (UNSW), Clothilde Langlais (CSIRO), Andrew Lenton (CSIRO), Kewei Lyu (CSIRO), Jie Ma (CSIRO), Simon Marsland (CSIRO), Paige Martin (University of Michigan), Josue Martinez Moreno (ANU), Richard Matear (CSIRO), Laurie Menviel (UNSW), Mainak Mondal (ANU), Ruth Moorman (ANU), Adele Morrison (ANU), Terry O’Kane (CSIRO), Peter Oke (CSIRO), Ramkrushnbhai Patel (UTAS), Paul Sandery (CSIRO), Abhishek Savita (UTAS-CSIRO), Kate Snow (NCI), Paul Spence (UNSW), Kial Stewart (ANU/UNSW), Veronica Tamsitt (UNSW/CSIRO), Mirko Velic (Bureau of Meteorology), Marshall Ward (NCI), Luwei Yang (IMAS, UTAS), Rui Yang (NCI), Jan Zika (UNSW)


The workshop was structured to focus on scientific questions on Day 1, particularly in the first two sessions. In these sessions, topics ranged from from Antarctic shelf processes to oceanic convection, from reversibility of the Earth system to frictional drag. The final session on day 1 focussed more on technical issues, including assessment of the optimisation status of existing models. On Day 2, talks focussed more on strategic issues, including an outline of Bluelink, ACCESS, CAFE and coastal programs. These strategic talks transitioned to small-group discussions (see synthesis below). The workshop finished with a tutorial on the COSIMA Cookbook framework for model analysis.

The Australian landscape in ocean-sea ice research involves a number of interleaving programs, each of which was represented at this workshop.  The figure below outlines the linkages between these programs:

By way of explanation:

ACCESS-CM2/-ESM1.5 will be Australia’s input to CMIP6, and use MOM5 and CICE at 1°.

CAFE is the decadal prediction system in development, which uses MOM5.

ARCCSS/CLEX, ARC CoE programs, use high-resolution ocean-sea ice models for process studies.

Bluelink/OFAM is the ocean forecasting and reanalysis system which will adopt ACCESS-OM2-01 in future versions.

CSHOR is the Centre for Southern Hemisphere Oceanographic Research; it focuses on observational studies but we hope to establish two-way interactions with this program.

Coastal Modelling includes the Australian coastal oceanography community, as well as Antarctic nearshore programs within AAD and ACE-CRC.

A major theme of the workshop was to review the status of the ACCESS-OM2 model which is the focus of COSIMA. In short, we have had success with model releases at 1° and 0.25° resolution – these models are now actively being used for scientific runs, and are available for download and use by the community. They include a recent upgrade to the file-based atmosphere (YATM) and new JRA55-do forcing datasets. The 0.1° version of the model has progressed significantly in the last year; there are outstanding tasks to evaluate model output and further optimise the model configuration.

The COSIMA Cookbook tutorial was attended by about a third of participants, and some progress was made. The aim of this tutorial was to entrain more active users to the system and encourage input from those users. The Cookbook is similar in style to the analysis system being developed for CAFE and it may be possible to merge elements of each framework at some stage in the future.


Where available, talk files are linked from the presenter’s name.

Monday 7 May
10:00 Arrival & Morning tea
10:30 Session 1 (Chair – Andy Hogg)
Stephen M Griffies (NOAA/GFDL): Understanding and projecting global and regional sea level: More reasons to include refined ocean resolution in global climate models
Andrew Kiss (ANU): Overview of the ACCESS-OM2 model suite
Andrew Lenton (CSIRO): Ocean Reversibility in ACCESS-ESM
Catia Domingues (UTAS): Global and spatial temporal changes in upper-ocean thermometric sea level
Fabio Dias (UTAS/CSIRO): Mean and seasonal states of the ocean heat and salt budgets in ACCESS-OM2
Adele Morrison (ANU): Circumpolar Deep Water transport towards Antarctica driven by dense water export
Jan Zika (UNSW): Getting an ocean model to obey: Prescribing and perturbing exact fluxes of heat and fresh water
12:30 Lunch
13:30 Session 2 (Chair – Clothilde Langlais)
Petra Heil (AAD & ACE CRC): ACCESS-OM2-01 sea ice
Paul Sandery (CSIRO): Sea-ice data assimilation and forecasting using an Ensemble Transform Kalman Filter
Paul Spence (UNSW): Does the Southern Ocean have sleep apnea?
Veronique Lago (UNSW): Impact of projected amplification of Antarctic meltwater on Antarctic Bottom Water formation
Ryan Holmes (UNSW): Numerical Mixing in the COSIMA Models
Luwei Yang (IMAS, UTAS): The impacts of bottom frictional drag on the sensitivity of the Southern Ocean circulation to changing wind
Vassili Kitsios (CSIRO): Stochastic subgrid turbulence parameterisation of eddy-eddy, eddy-topographic, eddy-meanfield and meanfield-meanfield interactions
Matt Chamberlain (CSIRO): Using transport matrices to probe circulation in ocean models
15:30 Afternoon tea
16:00 Session 3 (Chair – Petra Heil)
Nicholas Hannah (COSIMA): ACCESS-OM2 Software Development
Marshall Ward (NCI): ACCESS-OM2 performance analysis
Rui Yang (NCI): Parallel IO in MOM5
Angus Gibson (ANU): Towards an adaptive vertical coordinate in MOM6
Jie Ma (CSIRO ): Investigating interannual-decadal variability of Indian Ocean temperature transport in an eddy-resolving model
Paige Martin (University of Michigan): Frequency-domain analysis of energy transfer in an idealized ocean-atmosphere model
17:30 Close
19:00 Workshop dinner (Debacle24 Lonsdale St Braddon)
Tuesday 8 May
9:00 Session 4 (Chair – Andrew Kiss)
Andy Hogg (ANU): Are we Redi for 0.25° ocean-climate models?
Kial Stewart (ANU): The Repeat Year Forcing for JRA55-do
Terry O’Kane (CSIRO): Coupled data assimilation and ensemble initialization with application to multi-year ENSO prediction
Gary Brassington (Bureau of Meteorology): Ocean forecasting status and outlook
Peter Oke (CSIRO): Bluelink activities and plans
Matthew England (UNSW): A proposal for future projection simulations using COSIMA ocean-ice models
Richard Matear (CSIRO): CSIRO Decadal Climate Forecasting, update of the project’s progress
Simon Marsland (CSIRO): Preparing ACCESS for CMIP6
Clothilde Langlais (CSIRO): Downscaling towards the coast – a perspective on where the coastal modelling group would like to go
11:00 Morning tea
11:30 Discussion: COSIMA planning and strategy
13:00 Lunch
14:00 Strategy and planning summary
14:30 COSIMA Cookbook tutorial
16:00 Close

Synthesis of Discussion

Tuesday afternoon included discussions of present and future needs and directions of the COSIMA community, via breakout sessions on the topics Sea Ice, Coastal / Forecasting, Coupled Modelling, Process Modelling, Biogeochemistry, and Technical. The overall threads of  these discussions are summarised here.

Open and accessible code, configurations, output and analysis

Transparency, accessibility and reproducibility of model code development, run configurations and output data were named as priorities by many groups. Nic Hannah’s proposed REDB (Reproducible Experiment Database, was widely supported as a means to tie together and curate the source code, configurations, output and analysis of model experiments. Using consistent shared codebases was also a priority. Containerisation was suggested as a method to make experiments self-contained. Extension of the database to include idealised experiments was also suggested.

Model evaluation

There is a need for more model evaluation against observations. Several groups highlighted the importance of better integration of observations for model validation and a desire for this functionality to be better supported in the COSIMA Cookbook. Comparison of CICE to SIS-1 at 1 and 1/4 deg was also suggested.

Technical validation is also needed – e.g. BGC, bit reproducibility, broadened test suite, regression testing. Model performance and stability priorities include: resolve crashes, balance load, MPI benchmarks and stress testing.


Suggestions included a glossary for beginners, an online portal for control runs, and to minimise difficulty of running new model configurations. Standardised output files and naming conventions would facilitate analysis. Improved functionality and versatility of the COSIMA Cookbook was also suggested.

Documentation was a priority for many, in particular an ACCESS-OM2 documentation paper, but also open/evolving documentation as the models develop.

Parameter selection was also a concern for many – how to choose appropriate parameters (e.g. for ice or BGC), how to assess model sensitivity to parameters, how to document why parameters were chosen or altered. Data assimilation was suggested a way to improve ice parameter selection, including assimilation of under-ice observations (e.g. temperature). BGC was suggested as a way to constrain the dynamics.

It was pointed out that the payu run management software underpins model runs, yet formal funding for its continued development is presently lacking.

Model enhancements

Suggestions for enhanced modelling capability included: interannual forcing, WOMBAT BGC, coupling to an atmosphere model, 1-way nesting, coupling to wavewatch, explicit tides, wet/dry cells.

Community coordination, synergies and strategy

Suggestions included a streamlined process for providing community feedback and deciding on priorities, and for community involvement in developing the BGC component. It was also suggested to foster engagement with atmosphere and sea ice specialists, and have a more formalized ice group. The technical team is also seeking more input from scientists, especially regarding sea ice.

Regarding modelling strategy, it was suggested to have intelligent model diversity (not too many versions), a consensus on standard perturbation experiments, and to decide on resources to commit to MOM5 vs. MOM6.

Summary of Priority Tasks

The following list of tasks was identified as a priority for the near term. Volunteers to lead or assist with tasks much appreciated.

  1. IAF Runs: With the addition of YATM, we now have the facility to run Interannual Forcing (IAF) runs from the JRA55-do forcing dataset in ACCESS-OM2. Once YATM has been tested, we will conduct IAF runs at all resolutions, starting with 1°.
  2. Model Documentation: Production of a model documentation paper is a high priority for the coming months. This will be achieved by:
    1. Writing a larger technical documentation report ( that will be stripped down to feed into a paper; and
    2. Inviting community evaluation of existing model output.
  3. Model evaluation and analysis: We propose the COSIMA Cookbook as a framework for users to contribute model analyses. In particular, we encourage observational comparisons with existing model output, and also encourage users to submit bug reports and feature requests via
  4. WOMBAT: In the coming months we will look to implement the WOMBAT biogeochemistry model (already running in MOM5) into the ACCESS-OM2 framework.
  5. Capability gaps: The COSIMA community has been able to leverage expertise from a number of different programs. However, our community as a whole remains subcritical in several areas, including sea ice modelling and atmospheric dynamics.
  6. REDB: Nic Hannah proposed a new system for tracking simulations and the output data. This system was identified by many discussion groups as a potential solution to some of our collaboration roadblocks. We will investigate the viability of such a system.
  7. MOM6: Plan is to begin transition to MOM6, building up experience in the latter half of 2018.

Recommendations for COSIMA 2019 workshop

  • Institute a James Munroe award for contributions to COSIMA
  • Extend to a 2.5-day workshop to allow more time for discussion (not extra talks)