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EssentialNice to haveShould not be included
CMWG co-chairs recommendation
justification
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Model capabilities and physics
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Grounding line dynamics1210essential
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Higher-order physics1210essential
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Ice shelf cavities1120essential
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Mass/energy conserving1120essential
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Multiple sliding laws1030essential
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Transient grounding lines1030essential
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Unstructured mesh1030essential
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Basin/regional configurations850essential
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Surface mass balance850desirableThis comes with the atm/land surface modules. This is essential if in stand-alone configuration, and I'd weight it as a highly desirable criterion
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Ice shelf calving/rifting760desirableWould be great to have on the 5 year development horizon
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Pass community-agreed benchmarking760essential
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Adaptive mesh670desirableWould be great to have on the 5 year development horizon
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Deformation/rheology (tensor laws available)580desirableAll ISMs have Glen flow relation. Would be great to have the option of a tensor flow relation, coupled simulations with tensor flow relations are unlikely to be a priority within the next decade
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Subglacial hydrology580essentialEssential for coupled feedbacks. This is clear from multitude of studies coming out. Question is what level of capability in the subglacial hydrology scheme? I'd suggest a simple parameterisation is sufficient, but ultimately we'd prefer a model that is capable of stand-alone subglacial hydrology simulations (e.g. GlaDS)
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Ice elevation feedbacks2101desirableThis comes with the atm/land surface modules
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Sea level fingerprint2101desirable
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Solid Earth1111desirable
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Hydrofracture/surface hydrology0130desirable
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Input/Output and calibration
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Data assimilation (not spinup)940essential
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Conventional data format580desirableCan be modified relatively easily
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Standardisation of variables490desirableCan be modified relatively easily
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Automatic differentiation1120desirableWould be great to have on the 5 year development horizon
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Flexibility and modularity
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Ease of coupling with other Earth Systems models850essential
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Computationally tractable580essential
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Accessibility and useability
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Code management for community development1300essential
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Open and accessible code1210essential
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Relationship with developers1030essential
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Size and friendliness of user group940essential
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Active development plan760essentialThis is absolutely essential. We need to know that there's a plan going forward and that the ISM we choose is going to be actively developed
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Computational efficiency760essential
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Expert knowledge within Australia490desirableThis is highly desirable, and it'd be good to weight it as such
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