Continuously accelerating ice loss over Amundsen Sea catchment, West Antarctica, revealed by integrating altimetry and GRACE data
Satellite altimetry and Gravity Recovery and Climate Experiment (GRACE) measurements
have provided contemporary, but substantially different Antarctic ice sheet mass balance
estimates. Altimetry provides no information about firn density while GRACE data is
significantly impacted by poorly constrained glacial isostatic adjustment signals. Here, we
combine Envisat radar altimetry and GRACE data over the Amundsen Sea (AS) sector, West
Antarctica, to estimate the basin-wide averaged snow and firn column density over a …
have provided contemporary, but substantially different Antarctic ice sheet mass balance
estimates. Altimetry provides no information about firn density while GRACE data is
significantly impacted by poorly constrained glacial isostatic adjustment signals. Here, we
combine Envisat radar altimetry and GRACE data over the Amundsen Sea (AS) sector, West
Antarctica, to estimate the basin-wide averaged snow and firn column density over a …
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