pmip3:design:21k:icesheet:index
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pmip3:design:21k:icesheet:index [2009/10/07 21:09] jypeter Major update of the GLAC-1 section |
pmip3:design:21k:icesheet:index [2009/10/12 09:25] jypeter Added links to *kaHuvNA.pdf and corrected a link |
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| Unfortunately, these glaciological models in combination with the ICE-6G chronology for Antarctica (and Patagonia) and Dick Peltier's VM5a earth rheology have at best a weak fit to the the LGM segment of the Barbados record. There is a significant tradeoff between Barbados fit and fit to other constraints. What is unclear at this stage is the extent to which this is due to deficiencies in the glaciological models, to problems with the ICE-6G Antarctic ice chronology, or possibly with inferred uncertainties in the Barbados record and with the VM5a earth rheology. | Unfortunately, these glaciological models in combination with the ICE-6G chronology for Antarctica (and Patagonia) and Dick Peltier's VM5a earth rheology have at best a weak fit to the the LGM segment of the Barbados record. There is a significant tradeoff between Barbados fit and fit to other constraints. What is unclear at this stage is the extent to which this is due to deficiencies in the glaciological models, to problems with the ICE-6G Antarctic ice chronology, or possibly with inferred uncertainties in the Barbados record and with the VM5a earth rheology. | ||
| - | One possibility for resolving Barbados, is to take the 1.5 sigma upper limit of the previously calibrated ensemble for North America which almost reaches the inferred Barbados record for 26 to 21 ka. Dick Peltier and Rosemarie Drummond will cross-check this dataser. The problem with using ensemble bounds is that this is no longer a glaciologically self-consistent model and RSL fits have also deteriorated. | + | One possibility for resolving Barbados, is to take the 1.5 sigma upper limit of the previously calibrated ensemble for North America which almost reaches the inferred Barbados record for 26 to 21 ka. Dick Peltier and Rosemarie Drummond will cross-check this dataset. The problem with using ensemble bounds is that this is no longer a glaciologically self-consistent model and RSL fits have also deteriorated. |
| == References == | == References == | ||
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| * North Am: (with nn8234 Eurasia)\\ [[http://pmip3.lsce.ipsl.fr/share/design/glac1/rslGLAC1RSLcompAc.pdf|rslGLAC1RSLcompAc.pdf]] nn9021 (as calibrated, ICE4G Antarctica, VM2),nn9021 with ICE6G Antarctica/VM5a, nn7280, nn445\\ \\ [[http://pmip3.lsce.ipsl.fr/share/design/glac1/rslGLAC1RSLcompBc.pdf|rslGLAC1RSLcompBc.pdf]] nn9021, nn445, nn445+1sigma, nn445-1sigma\\ | * North Am: (with nn8234 Eurasia)\\ [[http://pmip3.lsce.ipsl.fr/share/design/glac1/rslGLAC1RSLcompAc.pdf|rslGLAC1RSLcompAc.pdf]] nn9021 (as calibrated, ICE4G Antarctica, VM2),nn9021 with ICE6G Antarctica/VM5a, nn7280, nn445\\ \\ [[http://pmip3.lsce.ipsl.fr/share/design/glac1/rslGLAC1RSLcompBc.pdf|rslGLAC1RSLcompBc.pdf]] nn9021, nn445, nn445+1sigma, nn445-1sigma\\ | ||
| * Eurasia:\\ [[http://pmip3.lsce.ipsl.fr/share/design/glac1/rslGLAC1RSLcompEc.pdf|rslGLAC1RSLcompEc.pdf]] nn8234 (with nn9021), nn8234(with nn7280), nn8191(with nn9021)\\ | * Eurasia:\\ [[http://pmip3.lsce.ipsl.fr/share/design/glac1/rslGLAC1RSLcompEc.pdf|rslGLAC1RSLcompEc.pdf]] nn8234 (with nn9021), nn8234(with nn7280), nn8191(with nn9021)\\ | ||
| - | * Barbados: [[http://pmip3.lsce.ipsl.fr/share/design/glac1/GLAC1RSLcompBbarb.pdf|GLAC1RSLcompBbarb.pdf]] (note will slightly over predict barbados RSL drop around LGM due to lack of rotational effects on RSL calculation) | + | * Barbados: [[http://pmip3.lsce.ipsl.fr/share/design/glac1/GLAC1RSLcompBbarbc.pdf|GLAC1RSLcompBbarbc.pdf]] (note will slightly over predict barbados RSL drop around LGM due to lack of rotational effects on RSL calculation) |
| * Surface elevation and basal ice velocity area maps for 21 ka\\ Note: lakes and drainage results are not included in these plots\\ [[http://pmip3.lsce.ipsl.fr/share/design/glac1/21kaHuvnn8234.pdf|21kaHuvnn8234.pdf]], [[http://pmip3.lsce.ipsl.fr/share/design/glac1/18kaHuvnn8234.pdf|18kaHuvnn8234.pdf]], [[http://pmip3.lsce.ipsl.fr/share/design/glac1/14kaHuvnn8234.pdf|14kaHuvnn8234.pdf]] | * Surface elevation and basal ice velocity area maps for 21 ka\\ Note: lakes and drainage results are not included in these plots\\ [[http://pmip3.lsce.ipsl.fr/share/design/glac1/21kaHuvnn8234.pdf|21kaHuvnn8234.pdf]], [[http://pmip3.lsce.ipsl.fr/share/design/glac1/18kaHuvnn8234.pdf|18kaHuvnn8234.pdf]], [[http://pmip3.lsce.ipsl.fr/share/design/glac1/14kaHuvnn8234.pdf|14kaHuvnn8234.pdf]] | ||
| + | |||
| + | == Extra Plots == | ||
| + | |||
| + | * [[http://pmip3.lsce.ipsl.fr/share/design/glac1/14kaHuvNA.pdf|14kaHuvNA.pdf]] | ||
| + | * [[http://pmip3.lsce.ipsl.fr/share/design/glac1/18kaHuvNA.pdf|18kaHuvNA.pdf]] | ||
| + | * [[http://pmip3.lsce.ipsl.fr/share/design/glac1/21kaHuvNA.pdf|21kaHuvNA.pdf]] | ||
| === Southern hemisphere === | === Southern hemisphere === | ||
pmip3/design/21k/icesheet/index.txt · Last modified: 2009/12/23 13:25 by jypeter
