The Antarctic Ice Sheet (AIS) has shown signs of record-breaking growth after decades of contributing to global sea-level rise — as experts reveal their theories why.
A study published in Science China Earth Sciences revealed that between 2021 and 2023, the AIS gained mass at a rate of 108 gigatons per year — a remarkable reversal from the rapid loss seen in previous years.
The researchers analyzed data from the GRACE (Gravity Recovery and Climate Experiment) and GRACE-FO (GRACE Follow-On) missions, which measure changes in Earth’s gravity field to track ice mass fluctuations. They found that the AIS had been losing ice at a rate of 142 gigatons per year from 2011 to 2020.