Documentation for PISM, the Parallel Ice Sheet Model


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applications:201501 [2015/01/05 18:37] (current)
Ed Bueler created by copy of future_applications page
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 +====== January 2015 ======
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 +Click the image to go to //The Climate of the Past// article page.
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 +| **Coupled ice sheet–climate modeling under glacial and pre-industrial boundary conditions** ||
 +| **investigators**:​ | [[http://​​people/​ziemen|F. Ziemen]] and others |
 +| **journal**:​ | [[http://​​|The Climate of the Past]] |
 +Modeling Northern Hemisphere glacial conditions using general circulation models (GCMs) in quasi-equilibrium with prescribed ice sheets can lead to inconsistencies between the modeled climate and ice sheets. ​ To avoid this problem, this paper models the ice sheets explicitly, giving the first results from coupled ice sheet–climate simulations for pre-industrial times and the Last Glacial Maximum.
 +They use the atmosphere–ocean–vegetation GCM ECHAM5/​MPIOM/​LPJ bidirectionally-coupled with a modified version of PISM 0.3 on a 20 km grid covering the Northern Hemisphere. ​ The model system adequately represents large, non-linear climate perturbations,​ and the results agree reasonably well with reconstructions and observations. ​ A large part of the drainage of the ice sheets occurs in ice streams which show recurring surges as internal oscillations. ​ The Hudson Strait Ice Stream surges with an ice volume equivalent to about 5 m sea level and a recurrence interval of about 7000 yr, in agreement with basic expectations for Heinrich events.
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applications/201501.txt · Last modified: 2015/01/05 18:37 by Ed Bueler
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