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| Titel |
Sensitivity of the dynamics of Pine Island Glacier, West Antarctica, to climate forcing for the next 50 years |
| VerfasserIn |
H. Seroussi, M. Morlighem, E. Rignot, J. Mouginot, E. Larour, M. Schodlok, A. Khazendar |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1994-0416
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| Digitales Dokument |
URL |
| Erschienen |
In: The Cryosphere ; 8, no. 5 ; Nr. 8, no. 5 (2014-09-17), S.1699-1710 |
| Datensatznummer |
250116313
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| Publikation (Nr.) |
 copernicus.org/tc-8-1699-2014.pdf |
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| Zusammenfassung |
| Pine Island Glacier, a major contributor to sea level rise in West
Antarctica, has been undergoing significant changes over the last few
decades. Here, we employ a three-dimensional, higher-order model to simulate
its evolution over the next 50 yr in response to changes in its surface mass
balance, the position of its calving front and ocean-induced ice shelf
melting. Simulations show that the largest climatic impact on ice dynamics is
the rate of ice shelf melting, which rapidly affects the glacier speed over
several hundreds of kilometers upstream of the grounding line. Our
simulations show that the speedup observed in the 1990s and 2000s is
consistent with an increase in sub-ice-shelf melting. According to our
modeling results, even if the grounding line stabilizes for a few decades, we
find that the glacier reaction can continue for several decades longer.
Furthermore, Pine Island Glacier will continue to change rapidly over the
coming decades and remain a major contributor to sea level rise, even if
ocean-induced melting is reduced. |
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