"Oceanic and atmospheric warming has rendered the Antarctic ice sheet more susceptible to rapid grounding line retreat for its glaciers. A glacier's grounding line marks where the ice no longer rests on a land mass but floats on the open ocean, so the line's retreat inland indicates a melting glacier. Antarctica has also lost much buttressing due to the shrinking ice shelves, a process that Greenland has also witnessed since the 1980s."
"Because Earth's gravity exerts its pull on both satellites, if one approaches a high mass first, it gets pulled a little towards it, and the satellites measure the distance between each other. The inter-satellite distances over time show that both Antarctica and Greenland demonstrate accelerating ice sheet mass loss."
Antarctica's ice masses are experiencing "Greenlandification," a process characterized by unprecedented retreat and surface melt similar to Greenland's outlet glaciers. Oceanic and atmospheric warming has made the Antarctic ice sheet susceptible to rapid grounding line retreat, where glaciers' anchor points shift inland as they melt. Antarctica has lost significant ice shelf buttressing, mirroring Greenland's experience since the 1980s. Researchers used satellite data from the Gravity Recovery and Climate Experiment (GRACE) system to compare both regions. GRACE measures mass changes by tracking distance variations between two satellites as Earth's gravity pulls them toward areas of high mass. Analysis reveals both Antarctica and Greenland demonstrate accelerating ice sheet mass loss, contradicting earlier expectations that these regions would remain stable despite climate change.
#antarctic-ice-sheet-destabilization #greenlandification #climate-change-impacts #satellite-monitoring-technology #ice-shelf-collapse
Read at State of the Planet
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