Articles | Volume 11, issue 3
https://doi.org/10.5194/tc-11-1371-2017
https://doi.org/10.5194/tc-11-1371-2017
Research article
 | 
09 Jun 2017
Research article |  | 09 Jun 2017

Hypsometric amplification and routing moderation of Greenland ice sheet meltwater release

Dirk van As, Andreas Bech Mikkelsen, Morten Holtegaard Nielsen, Jason E. Box, Lillemor Claesson Liljedahl, Katrin Lindbäck, Lincoln Pitcher, and Bent Hasholt

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Latest update: 28 Mar 2024
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Short summary
The Greenland ice sheet melts faster in a warmer climate. The ice sheet is flatter at high elevation, therefore atmospheric warming increases the melt area exponentially. For current climate conditions, we find that the ice sheet shape amplifies the total meltwater generation by roughly 60 %. Meltwater is not stored underneath the ice sheet, as previously found, but it does take multiple days for it to pass through the seasonally developing subglacial drainage channels, moderating discharge.