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Expanding rivers on the Greenland ice sheet’s surface drain more meltwater into the sea

We tracked the annual extent of rivers on the Greenland ice sheet, revealing that the ice sheet's runoff area expanded by 29% between 1985 and 2020. Strong melting and refreezing has transformed the upper snow and firn layers into thick ice, enabling runoff from higher elevations even during cooler summers.

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Fig. 1: Rising runoff around the Greenland ice sheet.


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This is a summary of: Tedstone, A. J. & Machguth, H. Increasing surface runoff from Greenland’s firn areas. Nat. Clim. Change (2022).

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Expanding rivers on the Greenland ice sheet’s surface drain more meltwater into the sea. Nat. Clim. Chang. (2022).

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