pmip3:design:21k:icesheet:index
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pmip3:design:21k:icesheet:index [2009/09/09 12:21] jypeter Added the page_bottom tag |
pmip3:design:21k:icesheet:index [2009/09/23 12:50] jypeter Major update of the "Ice volume" section |
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| === Data === | === Data === | ||
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| + | <note tip>You should download the {{:pmip3:design:21k:icesheet:ice-ng_compare_polar.pdf}} file if you want to look at detailed graphics comparing the different versions of ICE-nG (56 Mb, 77 pages)</note> | ||
| Notes: | Notes: | ||
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| {{:pmip3:design:21k:icesheet:ice6g_v1.0_21.0k_1deg.png?200|21 K}} | {{:pmip3:design:21k:icesheet:ice6g_v1.0_21.0k_1deg.png?200|21 K}} | ||
| {{:pmip3:design:21k:icesheet:ice6g_v1.0_26.0k_1deg.png?200|26 K}} | {{:pmip3:design:21k:icesheet:ice6g_v1.0_26.0k_1deg.png?200|26 K}} | ||
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| + | === Ice volume === | ||
| + | |||
| + | The following table has been supplied by | ||
| + | [[rmarie@atmosp.physics.utoronto.ca|Rosemarie Drummond]]. It compares | ||
| + | the ice amounts in the various regions in terms of eustatic sea level | ||
| + | impact inferred by assuming the ocean area to remain fixed to the | ||
| + | modern area (//ice amount relative to now in m of ocean assuming ocean | ||
| + | area = 360768576 km<sup>2</sup>//). | ||
| + | |||
| + | ^ ^ ICE-4G\\ //final// ^^ ICE-5G\\ //v1.2// ^^ ICE-6G\\ //v1.0// ^^ | ||
| + | ^ ^ 21k ^ 26k ^ 21k ^ 26k ^ 21k ^ 26k ^ | ||
| + | ^ North America\\ (incl Innuit area) | 64.24 | 54.92 | 81.47 | 83.71 | 79.82 | 88.14 | | ||
| + | ^ Greenland & Iceland | 6.38 | 5.43 | 2.49 | 2.45 | 2.36 | 2.34 | | ||
| + | ^ Fennoscandia | 10.39 | 8.91 | 11.19 | 11.79 | 10.22 | 12.31 | | ||
| + | ^ Barents / Kara Seas | 14.05 | 12.26 | 8.43 | 9.29 | 7.26 | 9.10 | | ||
| + | ^ UK | 0.42 | 0.35 | 1.48 | 1.65 | 0.58 | 0.82 | | ||
| + | ^ Patagonia | 0.55 | 0.47 | 0.55 | 0.55 | 0.83 | 0.87 | | ||
| + | ^ West Antarctica | 9.74 | 8.33 | 9.68 | 9.68 | 11.79 | 11.79 | | ||
| + | ^ East Antarctica | 8.35 | 7.12 | 8.36 | 8.36 | 1.45 | 1.44 | | ||
| + | ^ ice-shelves (1) | | | | | 2.80 | 3.00 | | ||
| + | ^ Total | **114.12** | **97.79** | **123.63** | **127.48** | **117.11** | **129.81** | | ||
| + | |||
| + | * (1) The calculation only cares about grounded ice, so where it detects that the ice-model has ice that is below the predicted sea-level, it deems the ice to be melted and added to the ocean. The ice may be melted or be part of an ice-shelf eg the Ronne, Ross ice-shelves. This is a feature of the most recent version of the solver. | ||
| + | |||
| + | * The large change between ICE-4G (VM2) and ICE-5G (VM2) is due to the introduction of Art Dyke's margin chronology which had the ice being eliminated from North America earlier than in the original chronology obtained from John Andrews. This meant that more ice had to be removed in order to have the same impact on RSL during the ice-free Holocene interval. | ||
| + | |||
| + | * The large differences between ICE-5G (VM2) and ICE-6G (VM5a) are a combined result of the introduction of two further constraints: | ||
| + | * the analysis from Valerie Masson demonstrating that the elevation of East Antarctic ice was not significantly different than modern | ||
| + | * the results of the analyses based upon the application of the space geodetic constraints described in the Argus and Peltier paper. | ||
| + | |||
| + | * The version of the ICE-4G (VM2) model for which data are provided is not exactly the version that was employed in the original PMIP project but rather one from which a significant amount of Antarctic ice was simply eliminated (version employed for illustrative purposes in Peltier's paper for the Mt Hood volume of QSR). | ||
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| ====== Conclusion ====== | ====== Conclusion ====== | ||
pmip3/design/21k/icesheet/index.txt · Last modified: 2009/12/23 13:25 by jypeter
