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ICDC
CENIntegrated Climate Data Center ICDC

Photo: getty images/L. Calvetti

ACCESS-CM2

The CSIRO_ARCCSS_ACCESS-CM2 uses atmosphere and sea mode components derived from the HadGEM3-GC3.1 models – including the MetUM atmosphere, using the Global Atmosphere 7.1 (GA7.1) configuration of Walters et al. (2017) and the Global Sea Ice 8.1 (GSI8.1) configuration of the CICE sea ice model described in Ridley et al. (2018). These are combined with version 2.5 of the CABLE land surface model and version 5.1 of the MOM ocean model.

As for the HadGEM3-GC3.1 models, the sea ice model component is based upon version 5.1.2 of the CICE sea ice model (Hunke et al., 2015), using five thickness categories and the standard elastic–viscous–plastic (EVP) rheology. The model uses the Bitz and Lipscomb (1999) multi-layer vertical thermodynamics with four layers of ice and one of snow. Atmosphere–ice coupling is performed separately for each ice thickness category using the method of West et al. (2016).

Radiation is calculated using CICE's “default” CCSM3 scheme (see Hunke et al., 2015), which uses separate albedos for visible (< 700 nm) and near-infrared (> 700 nm) wavelengths for both bare ice and snow. The scheme has been ported into JULES where the surface exchanges are calculated. Prognostic melt ponds are included using the CICE topographic melt pond formulation of Flocco et al. (2012). Melt pond evolution is calculated in CICE with pond fraction and depth being passed through the coupler for use within the surface exchange scheme (albedo).

Institution: Commonwealth Scientific and Industrial Research Organisation (CSIRO)
Model: Australian Community Climate and Earth System Simulator Climate Model Version 2 (ACCESS CM2)
Resolution: aerosol: 250 km, atmos: 250 km, land: 250 km, ocean: 100 km, seaIce: 100 km
Components: aerosol: UKCA-GLOMAP-mode, atmos: MetUM-HadGEM3-GA7.1 (N96; 192 x 144 longitude/latitude; 85 levels; top level 85 km), land: CABLE2.5, ocean: ACCESS-OM2 (GFDL-MOM5, tripolar primarily 1deg; 360 x 300 longitude/latitude; 50 levels; top grid cell 0-10 m), seaIce: CICE5.1.2 (same grid as ocean).
Contact: Chloe Mackallah (email: Chloe.Mackallah (at) csiro.au); Martin Dix (email: martin.dix (at) csiro.au)
References: --
Information: https://cera-www.dkrz.de/WDCC/ui/cerasearch/cmip6?input=CMIP6.CMIP.CSIRO-ARCCSS.ACCESS-CM2