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Abstract

Making robust real-world predictions of ice flow behavior requires an accurate representation of ice sheets and glaciers within Earth system models. Verification and validation (V&V) is a set of techniques used to quantify model confidence and can be used to enhance the credibility of models.  LIVVkit is a land ice V&V toolkit being developed within the ProSPect project and available in the e3sm_unified conda environment. It includes a new surface mass balance (SMB) validation extension that analyses E3SM’s modeled SMB to observed SMB, both visually and analytically. As part of the analysis, a wide variety of detailed visualizations are generated covering both Greenland and Antarctica. These include, for example, map-view pseudocolor representations of the modeled and observed SMB for the whole ice sheet, as well as for individual drainage basins. Observations used for comparison include multiple core and stake SMB datasets, in both the ablation and accumulation zones, and SMB estimates from NASA's Operation IceBridge airborne radar data.

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