Modelling long term ice sheet changes to understand the stability of the Greenland Ice Sheet in a warmer world

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dc.contributor.advisorMarshall, Shawn
dc.contributor.authorRahimian, Zahra
dc.contributor.committeememberElse, Brent G. T.
dc.contributor.committeememberNorman, Ann-Lise
dc.date2020-06
dc.date.accessioned2020-01-27T21:14:22Z
dc.date.available2020-01-27T21:14:22Z
dc.date.issued2020-01-24
dc.description.abstractThe 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.en_US
dc.identifier.citationRahimian, Z. (2020). Modelling long term ice sheet changes to understand the stability of the Greenland Ice Sheet in a warmer world (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.en_US
dc.identifier.doihttp://dx.doi.org/10.11575/PRISM/37509
dc.identifier.urihttp://hdl.handle.net/1880/111561
dc.language.isoengen_US
dc.publisher.facultyArtsen_US
dc.publisher.institutionUniversity of Calgaryen
dc.rightsUniversity 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.en_US
dc.subject.classificationPhysical Geographyen_US
dc.subject.classificationEnvironmental Sciencesen_US
dc.titleModelling long term ice sheet changes to understand the stability of the Greenland Ice Sheet in a warmer worlden_US
dc.typemaster thesisen_US
thesis.degree.disciplineGeographyen_US
thesis.degree.grantorUniversity of Calgaryen_US
thesis.degree.nameMaster of Science (MSc)en_US
ucalgary.item.requestcopytrueen_US
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