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|a Acceleration of the contribution of the Greenland and Antarctic ice sheets to sea level rise |h [electronic resource]. |
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|a [S.l.] : |b American Geophysical Union, |c 2011. |
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|a Geophysical Research Letters Volume 38. |
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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 Ice sheet mass balance estimates have improved
substantially in recent years using a variety of techniques,
over different time periods, and at various levels of spatial
detail. Considerable disparity remains between these
estimates due to the inherent uncertainties of each method,
the lack of detailed comparison between independent
estimates, and the effect of temporal modulations in ice
sheet surface mass balance. Here, we present a consistent
record of mass balance for the Greenland and Antarctic
ice sheets over the past two decades, validated by the
comparison of two independent techniques over the last
8 years: one differencing perimeter loss from net
accumulation, and one using a dense time series of timevariable
gravity. We find excellent agreement between the
two techniques for absolute mass loss and acceleration of
mass loss. In 2006, the Greenland and Antarctic ice sheets
experienced a combined mass loss of 475 ± 158 Gt/yr,
equivalent to 1.3 ± 0.4 mm/yr sea level rise. Notably, the
acceleration in ice sheet loss over the last 18 years was
21.9 ± 1 Gt/yr2 for Greenland and 14.5 ± 2 Gt/yr2 for
Antarctica, for a combined total of 36.3 ± 2 Gt/yr2. This
acceleration is 3 times larger than for mountain glaciers
and ice caps (12 ± 6 Gt/yr2). If this trend continues, ice
sheets will be the dominant contributor to sea level rise in
the 21st century. |
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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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|t Acceleration of the contribution of the Greenland and Antarctic ice sheets to sea level rise |
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|a dpSobek |c Sea Level Rise |
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|u http://dpanther.fiu.edu/dpService/dpPurlService/purl/FI15061803/00001 |y Click here for full text |
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|3 Host material |u http://onlinelibrary.wiley.com/doi/10.1029/2011GL046583/full |y Acceleration of the contribution of the Greenland and Antarctic ice sheets to sea level rise |
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|a http://dpanther.fiu.edu/sobek/content/FI/15/06/18/03/00001/FI15061803_thm.jpg |
