Fig. 1.

Supraglacial river networks represent an important high-capacity mechanism for conveying large volumes of meltwater across the GrIS surface, as illustrated by (A) 23 July 2012 field photo (see authors in the image for scale), and (B) same-day WV2 satellite image. Both images were acquired ∼55 km inland of the ice edge near Kangerlussuaq, southwest Greenland.