Modelling long term ice sheet changes to understand the stability of the Greenland Ice Sheet in a warmer world
The Greenland Ice Sheet is under stress with the rising temperature. Ice sheet sensitivity to temperature changes and its contribution to global sea level rise can be estimated using ice sheet/climate models. This study combines an ice dynamics model and an isotope tracer model to carry out long-ter...
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ftunivcalgary:oai:prism.ucalgary.ca:1880/111561 2023-08-27T04:09:40+02:00 Modelling long term ice sheet changes to understand the stability of the Greenland Ice Sheet in a warmer world Rahimian, Zahra Marshall, Shawn Else, Brent G. T. Norman, Ann-Lise 2020-01-24 application/pdf http://hdl.handle.net/1880/111561 https://doi.org/10.11575/PRISM/37509 eng eng Arts University of Calgary Rahimian, Z. (2020). Modelling long term ice sheet changes to understand the stability of the Greenland Ice Sheet in a warmer world (Unpublished master's thesis). University of Calgary, Calgary, AB. http://dx.doi.org/10.11575/PRISM/37509 http://hdl.handle.net/1880/111561 University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. Physical Geography Environmental Sciences master thesis 2020 ftunivcalgary https://doi.org/10.11575/PRISM/37509 2023-08-06T06:36:46Z The Greenland Ice Sheet is under stress with the rising temperature. Ice sheet sensitivity to temperature changes and its contribution to global sea level rise can be estimated using ice sheet/climate models. This study combines an ice dynamics model and an isotope tracer model to carry out long-term coupled ice-sheet/climate simulations to investigate the vulnerability of the Greenland ice sheet to higher temperatures during the Eemian warming. I also examine how Eemian melting may have altered isotopic ratios and temperature reconstructions. The simulations are benchmarked against NEEM and Summit ice core observations to provide validation of model performance. I find that there is ice in central Greenland for climates up to 12ºC higher than present. Greenland’s contribution due to Eemian sea level most likely ranges between 2.8 to 4.3 m, associated with temperature anomalies from 5 to 9ºC. Melt-induced isotopic modifications can cause overestimation of 0.1-2ºC warming in proxy records. Master Thesis Greenland ice core Ice Sheet PRISM - University of Calgary Digital Repository Greenland |
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Open Polar |
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PRISM - University of Calgary Digital Repository |
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ftunivcalgary |
language |
English |
topic |
Physical Geography Environmental Sciences |
spellingShingle |
Physical Geography Environmental Sciences Rahimian, Zahra Modelling long term ice sheet changes to understand the stability of the Greenland Ice Sheet in a warmer world |
topic_facet |
Physical Geography Environmental Sciences |
description |
The Greenland Ice Sheet is under stress with the rising temperature. Ice sheet sensitivity to temperature changes and its contribution to global sea level rise can be estimated using ice sheet/climate models. This study combines an ice dynamics model and an isotope tracer model to carry out long-term coupled ice-sheet/climate simulations to investigate the vulnerability of the Greenland ice sheet to higher temperatures during the Eemian warming. I also examine how Eemian melting may have altered isotopic ratios and temperature reconstructions. The simulations are benchmarked against NEEM and Summit ice core observations to provide validation of model performance. I find that there is ice in central Greenland for climates up to 12ºC higher than present. Greenland’s contribution due to Eemian sea level most likely ranges between 2.8 to 4.3 m, associated with temperature anomalies from 5 to 9ºC. Melt-induced isotopic modifications can cause overestimation of 0.1-2ºC warming in proxy records. |
author2 |
Marshall, Shawn Else, Brent G. T. Norman, Ann-Lise |
format |
Master Thesis |
author |
Rahimian, Zahra |
author_facet |
Rahimian, Zahra |
author_sort |
Rahimian, Zahra |
title |
Modelling long term ice sheet changes to understand the stability of the Greenland Ice Sheet in a warmer world |
title_short |
Modelling long term ice sheet changes to understand the stability of the Greenland Ice Sheet in a warmer world |
title_full |
Modelling long term ice sheet changes to understand the stability of the Greenland Ice Sheet in a warmer world |
title_fullStr |
Modelling long term ice sheet changes to understand the stability of the Greenland Ice Sheet in a warmer world |
title_full_unstemmed |
Modelling long term ice sheet changes to understand the stability of the Greenland Ice Sheet in a warmer world |
title_sort |
modelling long term ice sheet changes to understand the stability of the greenland ice sheet in a warmer world |
publisher |
Arts |
publishDate |
2020 |
url |
http://hdl.handle.net/1880/111561 https://doi.org/10.11575/PRISM/37509 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland ice core Ice Sheet |
genre_facet |
Greenland ice core Ice Sheet |
op_relation |
Rahimian, Z. (2020). Modelling long term ice sheet changes to understand the stability of the Greenland Ice Sheet in a warmer world (Unpublished master's thesis). University of Calgary, Calgary, AB. http://dx.doi.org/10.11575/PRISM/37509 http://hdl.handle.net/1880/111561 |
op_rights |
University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission. |
op_doi |
https://doi.org/10.11575/PRISM/37509 |
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1775351229354868736 |