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TitleVariability and change in the Canadian Cryosphere
AuthorDerksen, C; Smith, S L; Sharp, M; Brown, L; Howell, S; Copland, L; Mueller, D; Gautier, Y; Fletcher, C; Tivy, A; Bernier, M; Bourgeois, J; Brown, R; Burn, C R; Duguay, C; Kushner, P; Langloisa, A; Lewkowicz, A G; Royer, A; Walker, A
SourceClimatic Change vol. 115, issue 1, 2012 p. 59-88, https://doi.org/10.1007/s10584-012-0470-0
Year2012
Alt SeriesEarth Sciences Sector, Contribution Series 20110193
PublisherSpringer
Documentserial
Lang.English
Mediaon-line; digital; paper
File formatpdf
ProvinceBritish Columbia; Alberta; Saskatchewan; Manitoba; Ontario; Quebec; New Brunswick; Nova Scotia; Prince Edward Island; Newfoundland and Labrador; Northwest Territories; Yukon; Nunavut
NTS1; 2; 3; 10; 11; 12; 13; 14; 15; 16; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 31; 32; 33; 34; 35; 36; 37; 38; 39; 40; 41; 42; 43; 44; 45; 46; 47; 48; 49; 52; 53; 54; 55; 56; 57; 58; 59; 62; 63; 64; 65; 66; 67; 68; 69; 72; 73; 74; 75; 76; 77; 78; 79; 82; 83; 84; 85; 86; 87; 88; 89; 92; 93; 94; 95; 96; 97; 98; 99; 102; 103; 104; 105; 106; 107; 114O; 114P; 115; 116; 117; 120; 340; 560
Lat/Long WENS-141.0000 -50.0000 90.0000 41.7500
Subjectsenvironmental geology; surficial geology/geomorphology; climate effects; climate, arctic; climatic fluctuations; ground temperatures; temperature; permafrost
Illustrationsdiagrams; graphs; location maps; satellite imagery; photographs
ProgramProgram Management - Climate Change Science, Climate Change Geoscience
AbstractDuring the International Polar Year (IPY), comprehensive observational research programs were undertaken to increase our understanding of the Canadian polar cryosphere response to a changing climate. Cryospheric components considered were snow, permafrost, sea ice, freshwater ice, glaciers and ice shelves. Enhancement of conventional observing systems and retrieval algorithms for satellite measurements facilitated development of a snapshot of current cryospheric conditions, providing a baseline against which future change can be assessed. Key findings include: 1. surface air temperatures across the Canadian Arctic exhibit a warming trend in all seasons over the past 40 years. A consistent pan-cryospheric response to these warming temperatures is evident through the analysis of multi-decadal datasets; 2. in recent years (including the IPY period) a higher rate of change was observed compared to previous decades including warming permafrost, reduction in snow cover extent and duration, reduction in summer sea ice extent, increased mass loss from glaciers, and thinning and break-up of the remaining Canadian ice shelves. These changes illustrate both a reduction in the spatial extent and mass of the cryosphere and an increase in the temporal persistence of melt related parameters. The observed changes in the cryosphere have important implications for human activity including the close ties of northerners to the land, access to northern regions for natural resource development, and the integrity of northern infrastructure.
GEOSCAN ID299690