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|a Sharply increased mass loss from glaciers and ice caps in the Canadian Arctic Archipelago |h [electronic resource] |y English. |
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|a [S.l.] : |b Macmillan Publishers Limited, |c 2011. |
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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 Mountain glaciers and ice caps are contributing significantly to present
rates of sea level rise and will continue to do so over the next
century and beyond. The CanadianArcticArchipelago, located off
the northwestern shore of Greenland, contains one-third of the global
volume of land ice outside the ice sheets, but its contribution to
sea-level change remains largely unknown. Here we show that the
Canadian Arctic Archipelago has recently lost 6167 gigatonnes per
year (Gt yr21) of ice, contributing 0.1760.02 mmyr21 to sea-level
rise. Our estimates are of regional mass changes for the ice caps
and glaciers of the CanadianArcticArchipelago referring to the years
2004 to 2009 and are based on three independent approaches: surface
mass-budget modelling plus an estimate of ice discharge (SMB1D),
repeat satellite laser altimetry (ICESat) and repeat satellite gravimetry
(GRACE). All three approaches show consistent and large
mass-loss estimates. Between the periods 2004–2006 and 2007–2009,
the rate of mass loss sharply increased from 3168Gtyr-1 to
92612 Gt yr-1 in direct response to warmer summer temperatures,
to which rates of ice loss are highly sensitive (64614Gt yr-1 per 1K
increase). The duration of the study is too short to establish a longterm
trend, but for 2007–2009, the increase in the rate of mass loss
makes the Canadian Arctic Archipelago the single largest contributor
to eustatic sea-level rise outside Greenland and Antarctica. |
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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 Canadian Arctic Archipelago (Nunavut and N.W.T.). |
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|a dpSobek |c Sea Level Rise |
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|u http://dpanther.fiu.edu/dpService/dpPurlService/purl/FI15062144/00001 |y Click here for full text |
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|a http://dpanther.fiu.edu/sobek/content/FI/15/06/21/44/00001/FI15062144thm.jpg |