Download the full-sized PDF
Permanent link (DOI): https://doi.org/10.7939/R3VX06D8N
This file is in the following communities:
|Graduate Studies and Research, Faculty of|
This file is in the following collections:
|Theses and Dissertations|
Variability in Summer Anticyclonic Activity over the Canadian Arctic Archipelago and west Greenland in the late 20th/early 21st centuries, and its impact on the firn stratigraphy of the Devon Ice Cap Open Access
- Other title
Devon Ice Cap
- Type of item
- Degree grantor
University of Alberta
- Author or creator
Bezeau, Peter, L
- Supervisor and department
Sharp, Martin (Earth and Atmospheric Sciences)
- Examining committee member and department
Myers, Paul (Earth and Atmospheric Sciences)
Musilek, Petr (Department of Electrical & Computer Engineering)
Department of Earth and Atmospheric Sciences
- Date accepted
- Graduation date
Master of Science
- Degree level
Significant summer warming over the Canadian Arctic Archipelago (CAA) is linked to a doubling in the frequency of anticyclonic circulation over the region since 2007. The frequency of positive anomalies in summer 500 hPa geopotential height is related to Arctic sea ice volume/thickness in April, May and June (1979-2012) and to poleward eddy heat flux in June. More frequent summer anticyclonic circulation over the CAA has caused more intense and sustained melt of ice caps and glaciers, and increased rates of mass loss. Based on 54 shallow cores recovered from elevations of 1400-1900 m a.s.l. on the Devon Ice Cap between 2004 and 2012, firn layer thinning due to more rapid densification in a warmer climate can explain much of the reduction in ice cap surface height measured by repeat airborne laser altimetry between 2004 and 2012 (-0.077 to -0.252 m a-1).
- Permission is hereby granted to the University of Alberta Libraries to reproduce single copies of this thesis and to lend or sell such copies for private, scholarly or scientific research purposes only. Where the thesis is converted to, or otherwise made available in digital form, the University of Alberta will advise potential users of the thesis of these terms. The author reserves all other publication and other rights in association with the copyright in the thesis and, except as herein before provided, neither the thesis nor any substantial portion thereof may be printed or otherwise reproduced in any material form whatsoever without the author's prior written permission.
- Citation for previous publication
Bezeau, P., Sharp, M., Burgess, D., & Gascon, G. (2013). Firn profile changes in
response to extreme 21st century melting at Devon Ice Cap, Nunavut, Canada. Journal of Glaciology, 59(217), 981-991.
- Date Uploaded
- Date Modified
- Audit Status
- Audits have not yet been run on this file.
File format: pdf (Portable Document Format)
Mime type: application/pdf
File size: 2940198
Last modified: 2015:10:12 20:39:22-06:00
Filename: Bezeau_Peter_Fall 2013.pdf
Original checksum: d6ced1430e93fc61cd17b96ead73568c
Well formed: false
Status message: Invalid page tree node offset=2379592
Status message: Unexpected error in findFonts java.lang.ClassCastException: edu.harvard.hul.ois.jhove.module.pdf.PdfSimpleObject cannot be cast to edu.harvard.hul.ois.jhove.module.pdf.PdfDictionary offset=2543
Status message: Invalid Annotation list offset=2880065
Status message: Outlines contain recursive references.
File title: Significant summer warming over the Canadian Arctic Archipelago (CAA) is linked to a doubling in the frequency of anticyclonic circulation over the region since 2007. The frequency of positive anomalies in summer 500 hPa geopotential height is rel...