pmip3:wg:degla:bc:ice
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pmip3:wg:degla:bc:ice [2015/03/02 10:17] ruza [Sea Level Equivalent (SLE)] |
pmip3:wg:degla:bc:ice [2015/10/21 13:49] ruza |
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| More info here: http://wiki.splitbrain.org/plugin:discussion */ | More info here: http://wiki.splitbrain.org/plugin:discussion */ | ||
| - | ~~DISCUSSION|Discussion on core experiment design~~ | + | ~~DISCUSSION|Discussion on core experiment ice sheets~~ |
| ====== Last Deglaciation Ice Sheets ====== | ====== Last Deglaciation Ice Sheets ====== | ||
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| For the core experiment, there is a choice of two global ice sheet reconstructions: | For the core experiment, there is a choice of two global ice sheet reconstructions: | ||
| * [[pmip3:wg:degla:bc:ice#ICE-6G_C_Reconstruction | ICE-6G_C]], provided by Dick Peltier, Rosmarie Drummond and co-authors | * [[pmip3:wg:degla:bc:ice#ICE-6G_C_Reconstruction | ICE-6G_C]], provided by Dick Peltier, Rosmarie Drummond and co-authors | ||
| - | * [[pmip3:wg:degla:bc:ice#Lev_Tarasov's_Reconstruction | Lev Tarasov's reconstruction]], provided by Lev Tarasov and co-authors. | + | * [[pmip3:wg:degla:bc:ice#GLAC-1D_Reconstruction | GLAC-1D]], provided by Lev Tarasov and co-authors. |
| - | Please use one of these reconstructions for your Last Glacial Maximum (LGM) experiment, as per the LGM working group requirements, and continue to use the same reconstruction through the transient last deglaciation Core simulation. \\ | + | Please use one of these reconstructions for your Last Glacial Maximum (LGM) experiment (e.g. equilibrium type spinup at 21 ka), and continue to use the same reconstruction through the transient last deglaciation Core simulation. \\ |
| \\ | \\ | ||
| Those groups that are able may wish to carry out two simulations; one with each ice sheet reconstruction. \\ | Those groups that are able may wish to carry out two simulations; one with each ice sheet reconstruction. \\ | ||
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| ==== Ice evolution, 21-0 ka ==== | ==== Ice evolution, 21-0 ka ==== | ||
| - | The ice mask in this reconstruction is fractional. For the purpose of the animations (below), we have used > 80 % ice cover per grid cell. The timestep is 500 years.<sup>[1-2]</sup> ((Animations produced by Ruza Ivanovic, Feb 2015)) \\ {{http://homepages.see.leeds.ac.uk/~earri/pmip_deglac/ICE-6G_C_NH_last_deglac.gif?400 |ICE-6G_C Northern Hemisphere}} | + | The ice mask in this reconstruction is fractional. For the purpose of the animations (below), we have used > 80 % ice cover per grid cell. The timestep is 500 years. Horizontal resolution is 1 degree, but it will also be available at 10 arcminute resolution. <sup>[1-2]</sup> ((Animations produced by Ruza Ivanovic, Feb 2015)) \\ {{http://homepages.see.leeds.ac.uk/~earri/pmip_deglac/ICE-6G_C_NH_last_deglac.gif?400 |ICE-6G_C Northern Hemisphere}} |
| {{ http://homepages.see.leeds.ac.uk/~earri/pmip_deglac/ICE-6G_C_SH_last_deglac.gif?400 |ICE-6G_C Southern Hemisphere }} | {{ http://homepages.see.leeds.ac.uk/~earri/pmip_deglac/ICE-6G_C_SH_last_deglac.gif?400 |ICE-6G_C Southern Hemisphere }} | ||
| \\ | \\ | ||
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| ---- | ---- | ||
| - | ====== Lev Tarasov's reconstruction ====== | + | ====== GLAC-1D reconstruction ====== |
| + | AKA //Tarasov// or //Tarasov et al.// reconstruction. | ||
| \\ | \\ | ||
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| ==== Ice Evolution, 21-0 ka ==== | ==== Ice Evolution, 21-0 ka ==== | ||
| - | The ice mask in this reconstruction is based on 100 % ice or no ice. The timestep is currently 1000 years, but could be provided at 500 years, if desired. <sup>[4-7]</sup>((Animations produced by Ruza Ivanovic, Feb 2015)) \\ | + | The ice mask in this reconstruction is based on 100 % ice or no ice. The timestep is currently 1000 years, but could be provided at 500 years, if desired. Horizontal resolution is 1 degree. <sup>[4-7]</sup>((Animations produced by Ruza Ivanovic, Feb 2015)) \\ |
| - | {{http://homepages.see.leeds.ac.uk/~earri/pmip_deglac/Tarasov_NH_last_deglac.gif?400 |Lev Tarasov's Northern Hemisphere ice}} | + | {{http://homepages.see.leeds.ac.uk/~earri/pmip_deglac/Tarasov_NH_last_deglac.gif?400 |GLAC-1D's Northern Hemisphere ice}} |
| - | {{ http://homepages.see.leeds.ac.uk/~earri/pmip_deglac/Tarasov_SH_last_deglac.gif?400 |Lev Tarasov's Southern Hemisphere ice}} | + | {{ http://homepages.see.leeds.ac.uk/~earri/pmip_deglac/Tarasov_SH_last_deglac.gif?400 |GLAC-1D's Southern Hemisphere ice}} |
| \\ | \\ | ||
| ==== Ice volume ==== | ==== Ice volume ==== | ||
| Ice volume of the constituent ice sheets through time.<sup>[4-7]</sup> ((Plot produced by Lauren Gregoire, Feb 2015)) \\ | Ice volume of the constituent ice sheets through time.<sup>[4-7]</sup> ((Plot produced by Lauren Gregoire, Feb 2015)) \\ | ||
| - | {{ http://homepages.see.leeds.ac.uk/~earri/pmip_deglac/Ice_Sheets_Tarasov.png? |Lev Tarasov's ice volume through time}} | + | {{ http://homepages.see.leeds.ac.uk/~earri/pmip_deglac/Ice_Sheets_Tarasov.png? |GLAC-1D ice volume through time}} |
| \\ | \\ | ||
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| Although ice meltwater fluxes should not be prescribed for the Core simulation, groups may wish to run alternative simulations with meltwater fluxes to the oceans. \\ | Although ice meltwater fluxes should not be prescribed for the Core simulation, groups may wish to run alternative simulations with meltwater fluxes to the oceans. \\ | ||
| \\ | \\ | ||
| - | A timeseries of global meltwater routing (river mouth discharge) that is consistent with Lev Tarasov's ice sheet reconstruction will be provided. \\ | + | A timeseries of global meltwater routing (river mouth discharge) that is consistent with GLAC-1D's ice sheet reconstruction will be provided. \\ |
| \\ | \\ | ||
| See the //alternative// [[pmip3:wg:degla:bc:alt | full transient simulations ]] page for more info. [not live yet] | See the //alternative// [[pmip3:wg:degla:bc:alt | full transient simulations ]] page for more info. [not live yet] | ||
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| Please think about the following points and add any comments on these or any other aspects of the experiment design to the discussion section below: [Topics will be added here as they are raised below or by email.] | Please think about the following points and add any comments on these or any other aspects of the experiment design to the discussion section below: [Topics will be added here as they are raised below or by email.] | ||
| - | * Should ICE-6G_C be provided here in its smoothed format, as offered by Dick Peltier (above; [[pmip3:wg:degla:bc:ice#smoothed_fields]]), its original unsmoothed format, or both? | + | * No specific points raised yet.\\ \\ |
| - | * Should Lev Tarasov's reconstruction be provided with a 500 year timestep? It is currently 1000 years, but could be provided with a shorter timestep.\\ \\ | + | |
| ---- | ---- | ||
pmip3/wg/degla/bc/ice.txt · Last modified: 2015/10/21 13:49 by ruza
