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|a Rapid loss of firn pore space accelerates 21st century Greenland mass loss |h [electronic resource] |y English. |
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|a [S.l.] : |b American Geophysical Union, |c 2013. |
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|a Geophysical Research Letters Volume 40. |
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|a Please contact the owning institution for licensing and permissions. It is the user's responsibility to ensure use does not violate any third party rights. |
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|a Mass loss from the two major ice sheets and their
contribution to global sea level rise is accelerating. In
Antarctica, mass loss is dominated by increased flow
velocities of outlet glaciers, following the thinning or
disintegration of coastal ice shelves into which they flow.
In contrast, 55% of post-1992 Greenland ice sheet (GrIS)
mass loss is accounted for by surface processes, notably
increased meltwater runoff. A subtle process in the surface
mass balance of the GrIS is the retention and refreezing
of meltwater, currently preventing 40% of the meltwater
to reach the ocean. Here we force a high-resolution
atmosphere/snow model with a mid-range warming scenario
(RCP4.5, 1970–2100), to show that rapid loss of firn pore
space, by >50% at the end of the 21st century, quickly
reduces this refreezing buffer. As a result, GrIS surface
mass loss accelerates throughout the 21st century and its
contribution to global sea level rise increases to
1.7˙0.5 mm yr–1, more than four times the current value. |
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|a Electronic reproduction. |c Florida International University, |d 2015. |f (dpSobek) |n Mode of access: World Wide Web. |n System requirements: Internet connectivity; Web browser software. |
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|a dpSobek |c Sea Level Rise |
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|u http://dpanther.fiu.edu/dpService/dpPurlService/purl/FI15062075/00001 |y Click here for full text |
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|a http://dpanther.fiu.edu/sobek/content/FI/15/06/20/75/00001/FI15062075_thm.jpg |
