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pmip3:wg:degla:bc:ice [2015/02/18 17:17]
ruza
pmip3:wg:degla:bc:ice [2015/10/21 13:49] (current)
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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 [[pmip3:​wg:​degla:​bc:​core|Go back]] to the main core experiment design page. \\ [[pmip3:​wg:​degla:​bc:​core|Go back]] to the main core experiment design page. \\
 [[pmip3:​wg:​degla:​index|Go back]] to the main working group page. \\ [[pmip3:​wg:​degla:​index|Go back]] to the main working group page. \\
-Please note, this page is a work in progress and is not ready for discussion yet. \\ 
 \\  \\ 
-Please use the //​Discussion//​ section below to specifically comment on the choice of __ice sheet reconstructions__ for the core experiment. ​\\  +Please use the //​Discussion//​ section below to specifically comment on the choice of __ice sheet reconstructions__ for the core experiment.
-\\ +
-This page contains a lot of information;​ use the 'Table of Contents'​ (top right) to navigate through!+
 \\ \\ \\ \\
  
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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 simulationsone with each ice sheet reconstruction. ​\\ \\+This page contains a lot of informationuse the 'Table of Contents'​ (top right) to navigate through! ​\\ \\
  
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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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 The information in this section was provided directly by Dick Peltier et al., October 2014: The information in this section was provided directly by Dick Peltier et al., October 2014:
-> Time dependent //​ice-equivalent//​ contribution to eustatic sea level rise [relative to present day] from each of the primary geographical regions from which grounded ice loss occurred during the [last] deglaciation process. ((Plot provided by Dick Peltier, October 2014)) {{ http://​homepages.see.leeds.ac.uk/​~earri/​pmip_deglac/​ICE-6GC_ESL.png?​400 |ICE-6G_C Eustatic Sea Level Equivalent of ice volume }}+> Time dependent //​ice-equivalent//​ contribution to eustatic sea level rise [relative to present day] from each of the primary geographical regions from which grounded ice loss occurred during the [last] deglaciation process. ((Plot provided by Dick Peltier, October 2014)) {{ http://​homepages.see.leeds.ac.uk/​~earri/​pmip_deglac/​ICE-6GC_ESL.png?​500 |ICE-6G_C Eustatic Sea Level Equivalent of ice volume }}
  
 ^  Ice-equivalent contribution to eustatic sea level rise (m) ((relative to present day and assuming ocean area = 360,768,600 km<​sup>​2</​sup>​)) ​ ^^^^ ^  Ice-equivalent contribution to eustatic sea level rise (m) ((relative to present day and assuming ocean area = 360,768,600 km<​sup>​2</​sup>​)) ​ ^^^^
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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 can be rerun with a shorter timestep.\\ \\+
  
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pmip3/wg/degla/bc/ice.1424279844.txt.gz · Last modified: 2015/02/18 17:17 by ruza