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| Titel |
Pliocene Ice Sheet Modelling Intercomparison Project (PLISMIP) – experimental design |
| VerfasserIn |
A. M. Dolan, S. J. Koenig, D. J. Hill, A. M. Haywood, R. M. DeConto |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1991-959X
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Model Development ; 5, no. 4 ; Nr. 5, no. 4 (2012-07-18), S.963-974 |
| Datensatznummer |
250002766
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| Publikation (Nr.) |
 copernicus.org/gmd-5-963-2012.pdf |
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| Zusammenfassung |
| During the mid-Pliocene warm period (3.264 to 3.025 million years ago),
global mean temperature was similar to that predicted for the next century
and atmospheric carbon dioxide concentrations were slightly higher than
today. Sea level was also higher than today, implying a reduction in the
extent of the ice sheets. Thus, the mid-Pliocene warm period (mPWP) provides
a unique testing ground to investigate the stability of the Earth's ice
sheets and their contribution to sea level in a warmer-than-modern world.
Climate models and ice sheet models can be used to enhance our understanding
of ice sheet stability; however, uncertainties associated with different
ice-sheet modelling frameworks mean that a rigorous comparison of numerical
ice sheet model simulations for the Pliocene is essential. As an extension
to the Pliocene Model Intercomparison Project (PlioMIP; Haywood et al.,
2010, 2011a), the Pliocene Ice Sheet Modelling Intercomparison Project
(PLISMIP) will provide the first assessment as to the ice sheet model
dependency of ice sheet predictions for the mPWP. Here we outline the
PLISMIP experimental design and initialisation conditions that have been
adopted to simulate the Greenland and Antarctic ice sheets under present-day
and warm mid-Pliocene conditions. Not only will this project provide a new
benchmark in the simulation of ice sheets in a past warm period, but the
analysis of model sensitivity to various uncertainties could directly inform
future predictions of ice sheet and sea level change. |
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