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Reposted by Nicolaj Hansen

Matt King @deformedearth.bsky.social · 10/09/2026

Excited to share PhD student Jenan Rajavarathan's first PhD now published in @egu.eu #TheCryosphere Jenan developed a new way to evaluate models of Antarctic surface mass balance (SMB) *variability* with Chris Watson and @nicolajhansen.bsky.social tc.copernicus.org/articles/20/... 1/3

$Scatterplot comparing GPS-measured vertical bedrock displacement with modelled displacement variability across seven surface mass balance (SMB) models. Most points lie above the zero line, indicating positive agreement between observations and models. Blue symbols represent reductions in GPS variance (improved agreement), while red symbols indicate increased variance (worse agreement). Across all models, the majority of GPS sites show variance reductions, often between 20% and 80%, with only a minority showing degradation. Point size represents the interquartile range of SMB variability at each GPS site. Overall, the figure suggests SMB-driven loading explains a substantial fraction of observed bedrock motion at many Antarctic GPS stations.$

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