An international research team reports that Petermann Glacier in northwest Greenland calved a 76.4 km² ice island on Aug. 4, 2026, marking the glacier's largest loss of floating ice since 2012 and the largest Arctic calving event since 2020.
About Petermann Glacier:
It is a large glacier located in North-West Greenland to the east of Nares Strait.
Nares Strait is a narrow sea passage between Greenland and Ellesmere Island (Canada) in the far north of the Arctic.
It is one of the largest glaciers connecting the Greenland ice sheet with the Arctic Ocean.
The glacier and its fjord are named after German cartographer August Heinrich Petermann.
Like most glaciers that discharge ice into the ocean, Petermann periodically sheds large icebergs.
Land-based glaciers in Greenland are a major contributor to global sea-level rise, and as global temperatures warm, more ice is expected to melt into the oceans.
Scientists estimate that if Petermann collapses completely, the sea level would rise by about 30 cm.
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