Documentation for PISM, the Parallel Ice Sheet Model


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applications_201502 [2015/02/05 13:17]
Andy Aschwanden created
applications_201502 [2015/02/05 13:21] (current)
Andy Aschwanden
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-[[http://​|{{ :applications:fischer2014-dataflow.png?300 |}}]]+[[http://​​ncomms6107/​full/​ncomms6107.html|{{:news:golledge2014.png?350 |}}]]
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-Click the image to go to //Geoscientific Model Development// journal page.+Click the image to go to //Nature Communications// journal page.
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 | **journal**:​ | [[http://​​naturecommunications|Nature Comm.]] | | **journal**:​ | [[http://​​naturecommunications|Nature Comm.]] |
-This paper describes ​conservative method ​using elevation classes to regrid surface mass balance fields between low-resolution GCMs and high-resolution ​ice sheet models. The proposed transformations are both mass and energy conserving, making them suitable for two-way coupling between climate ​and ice sheet modelsThese transformations are implemented ​in Glint2, a library used to couple atmosphere models with ice models+ 
 +In a [[http://​​ncomms/​2014/​140929/​ncomms6107/​full/​ncomms6107.html|new Nature Communications ​paper]], researchers at Victoria University and the University of New South Wales describe ​model study of Antarctic ice sheet evolution over the last 25 kyr using PISM with ocean-forcing inputs from the Earth system model LOVECLIM. ​ They show that when the ocean around Antarctica becomes more stratified, warm water at depth melts the ice sheet faster than when the ocean is less stratified. 
 +The study used a large ensemble of 15 km PISM simulations in a data-constrained mode.  In the simulations that best fit a variety of temporal ​and spatial observations,​ several episodes of accelerated ​ice-sheet recession occurred, with the timing of the largest being coincident with meltwater pulse 1A  This episode saw an abrupt rise in global sea levelwith an Antarctic contribution of nearly three meters over just few centuries. 
 +Both this [[http://​​2014/​10/​changing-antarctic-waters-could-trigger-steep-rise-in-sea-levels.html|blog entry]] and [[http://​​releases/​2014/​10/​141001102546.htm|this Science Daily news item]] summarize the work and relate the modeled melt from 14,000 years ago to present-day Antarctic conditions.
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applications_201502.txt · Last modified: 2015/02/05 13:21 by Andy Aschwanden
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