M. R. van den Broeke

Interpreting Air Temperature Trends Across the Antarctic Peninsula Between 1979 and 2025

Abstract The near‐surface temperature of the Antarctic Peninsula is marked by strong spatio‐temporal variability. In situ observations are scarce and therefore have limited spatial coverage. Furthermore, ERA‐5 reanalysis does not have a sufficient spatial resolution to capture th...

Impact of climate forcing time step in an ice-sheet firn model

The firn layer regulates how an ice sheet responds to atmospheric climate change by modifying how changes in surface temperature, snow accumulation and ablation affect the ice-sheet mass balance. Firn properties are often simulated with a firn densification model. Prior studies h...

On the non-linear response of Antarctic ice shelf surface melt to warming

Abstract. Surface meltwater can saturate firn, form melt ponds, and trigger hydrofracturing of Antarctic ice shelves, ultimately accelerating grounded ice flow and contributing to sea level rise. Although the response of surface melt to atmospheric warming (expressed by near-surf...

The recent enhancement of the surface melt over the Antarctic Peninsula dictated by thermodynamics

Intense surface melt and subsequent meltwater ponding are the key triggers for the disintegration of ice shelves in the Antarctic Peninsula (AP). Although a long-term decline in AP surface melt has been evident since the early 1990s, episodes of intense surface melt events have f...