Synchronous Retreat of Southeast Greenland's Peripheral Glaciers

Recently, scientific attention has focused on estimating Greenland's dynamic mass loss through changes to flow speeds, thickness, and length its marine outlet glaciers. For the ice sheet glaciers, been found be highly sensitive in climate individual glacier geometry. ice-sheet-independent glaciers around periphery, is presently overlooked. Here, we apply an open-source, automated method of measuring using satellite imagery, produce detailed records for 135 peripheral southeast Greenland. We find evidence anomalous retreat across 56 coincident with elevated surface melt 2016, 22% above 2013–2019 average. Our observations resolve widespread, rapid, synchronous response these independent increased meltwater input indicating that their dynamics may more atmospheric warming than currently thought.