Greenland ice core (IMAGE)

American Geophysical Union

Greenland ice core

Caption

Glaciologist Alun Hubbard holds up part of a 15-meter-long ice core, collected in southeastern Greenland to study how atmospheric rivers impact the Greenland Ice Sheet. The visible divide between ice on the left and snow firn on the right reveals hot summer melt and refreezing events. Hubbard's results, published in Geophysical Research Letters, revealed that a single, intense atmospheric river can deliver billions of tons of snow to the ice sheet, offsetting some of the annual ice loss.

Credit

Bruno Long

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License

CC BY-ND

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