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|a Melt Season Duration and Ice Layer Formation on the Greenland Ice Sheet, 2000-2004 |h [electronic resource]. |
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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 Time series of enhanced resolution QuikSCAT scatterometer images were used to map the
extent and duration of surface melt and the distribution of ice layer formation on the
Greenland ice sheet in the period 2000-2004. Apart from the bare ice and the mixed pixels
(10%) along the ice sheet margin where melt cannot be determined reliably, annual melt
duration and melt anomaly maps were produced across the ice sheet (90%) for each
summer. Over the 5-year period, the mean melt duration for the ice sheet ranged from 14.3
to 20.5 days. The proportion of the ice sheet that experienced melting in a given year
ranged from 44.2% to 79.2%. Extensive melt in 2002 was caused by a single melt event of
a few days duration. This event was associated with the intrusion of a ridge of high
pressure from the North Atlantic Ocean that brought warm air onto the ice sheet. The
change in biweekly averaged backscatter between the freeze-up periods in the current and
previous falls was used to identify changes in the distribution of ice layers in snow between
successive melt seasons. 2002 had the maximum melt extent and duration, and ice layer
formation extended to higher elevations than in other years. Inter-annual changes in the
distribution of ice layer formation may be associated with changes in surface height that are
not necessarily indicative of mass balance changes. Mapping of ice layer formation is thus
potentially useful for interpreting both real and apparent height changes measured by
altimetry. |
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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 Melt Season Duration and Ice Layer Formation on the Greenland Ice Sheet, 2000-2004 |
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|a dpSobek |c Sea Level Rise |
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|u http://dpanther.fiu.edu/dpService/dpPurlService/purl/FI15060931/00001 |y Click here for full text |
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|3 Host material |u http://arctic.eas.ualberta.ca/downloads/Wang%20et%20al%20Greenland%20melt%202007JGR.pdf |y Melt Season Duration and Ice Layer Formation on the Greenland Ice Sheet, 2000-2004 |
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|a http://dpanther.fiu.edu/sobek/content/FI/15/06/09/31/00001/Wang et al_2007_Melt season duration and ice layer formation on the Greenland ice sheet,thm.jpg |