Abstract
Ice Sheets The Greenland Ice Sheet, along with the Antarctic Ice Sheet and glaciers worldwide, is melting at an accelerating rate. This melting is not uniform, however, with adjacent fjords often exhibiting quite different behaviors. What can account for those differences? Millan et al. present oceanographic observations and bathymetric data from the vicinity of 20 major glaciers in southeast Greenland, which show that retreating glaciers occupy deep valleys exposed to warm Atlantic water, whereas stable ones rest on sills away from warm water. These observations can explain the complex pattern of ice-front positions from the 1930s to the present. Geophys. Res. Lett. 10.1002/2017GL076561 (2018).
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