• Translated the Bayesian Hierarchical Model (BHM) approach to a global grid and successful implemented it via modifications to the functionality of a statistical computing package (read more).
• Created a global GPS dataset to provide a ‘clean’ signal of glacial isostatic adjustment (GIA) – We developed an automated method for processing GPS time series to isolate the GIA signal and hence provide an observational estimate of global GIA uplift rates (read more)
• Extended the BHM approach to investigate ice mass trends for Antarctica – We extended mass balance trends calculated for the Antarctic Ice Sheet using a BHM approach up to 2015, and contributed these results to the first World Climate Research Programme (WCRP) global sea level budget (GSLB) assessment (read more).
• New estimate of land ice contribution to sea level rise – We produced a new synthesis of land ice mass trends during the satellite era (1992 to 2016) focusing on its contribution to sea level rise (read more).
• New estimate of ice sheet contribution to future sea level rise – We used an approach called Structured Expert Judgement, which combines multiple experts’ individual predictions to estimate future ice sheet contributions to sea level rise under different temperature scenarios (read more).
• Investigated how disagreements in basin-scale sea-level budgets are due to the different measurement systems used – We studied how different processing and averaging methods can introduce mismatches into results obtained from global density (Argo), ocean mass (GRACE) and sea surface height (altimetry) measurements (read more).
• Demonstrated how sea level budgets should account for ocean bottom deformation (read more).
• Proposed a new metric to assess the magnitude of hydrology trends relative to historical natural variability, which provides a more informative and complete assessment of the severity of trends than those taken from GRACE alone (read more).
We submitted our mid-project scientific report to the European Research Council in March 2019, and this is now available on the European Commission’s CORDIS website.