A High Arctic microclimatic hotspot assessment Cape Bounty, Nunavut

Simple item page
dc.contributor.authorGaribaldi, Madeleine C.
dc.contributor.authorUniversity of Lethbridge. Faculty of Arts and Science
dc.contributor.supervisorBonnaventure, Philip
dc.date.accessioned2018-09-26T16:53:16Z
dc.date.available2018-09-26T16:53:16Z
dc.date.issued2018
dc.degree.levelMastersen_US
dc.description.abstractGround surface and permafrost temperatures in the High Arctic have been considered homogeneous. However, due to differential snow cover, there is a substantial degree of heterogeneity present. The objectives of this thesis were to model the ground thermal regime at Cape Bounty, Nunavut, using the TTOP model, for current conditions and climate change scenarios. While air temperature was mostly uniform, ground surface temperatures ranged from about -3.8 °C to about -13.8 °C. The spatial models showed warmer ground surface temperatures in topographic hollows, where snow accumulates, and colder temperatures in areas of topographic prominence, where snow is scoured. Under climate change, the models predicted that areas with the coldest permafrost had the largest magnitude of warming, while areas of relatively warm permafrost became closer to 0 °C. The thermal heterogeneity may have implications for ground stability, hydrological connectivity, and microbial activity, which influence solute movement and mercury release.en_US
dc.description.sponsorshipNSERC ArcticNet PCSPen_US
dc.embargoNoen_US
dc.identifier.urihttps://hdl.handle.net/10133/5202
dc.language.isoen_USen_US
dc.proquest.subject0368en_US
dc.proquest.subject0404en_US
dc.proquestyesYesen_US
dc.publisherLethbridge, Alta. : Universtiy of Lethbridge, Department of Geographyen_US
dc.publisher.departmentDepartment of Geographyen_US
dc.publisher.facultyArts and Scienceen_US
dc.relation.ispartofseriesThesis (University of Lethbridge. Faculty of Arts and Science)en_US
dc.subjectmodellingen_US
dc.subjectTTOPen_US
dc.subjectpermafrosten_US
dc.subjectclimate changeen_US
dc.subjectsnow coveren_US
dc.subjectthermal heterogeneityen_US
dc.subjectCanada, Northern -- Climateen_US
dc.subjectClimatic changes -- Research -- Nunavut -- Cape Bountyen_US
dc.subjectPermafrost -- Effect of global warming on -- Research -- Nunavut -- Cape Bountyen_US
dc.subjectPermafrost -- Thermal properties -- Research -- Nunavut -- Cape Bountyen_US
dc.subjectDissertations, Academicen_US
dc.titleA High Arctic microclimatic hotspot assessment Cape Bounty, Nunavuten_US
dc.typeThesisen_US
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Garibaldi_Madeleine_MSc_2018.pdf
Size:
11.9 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
3.25 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Arts and Science, Faculty of
University of Lethbridge Theses