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TitleSimplified climate statistics for permafrost modeling: Yellowknife case study
AuthorRiseborough, D; Wolfe, S; Duchesne, C
SourceProceedings of the Tenth International Conference on Permafrost; 2012 p. 335-340
Alt SeriesEarth Sciences Sector, Contribution Series 20110342
MeetingTenth International Conference on Permafrost; Salekhard; RU; June 25-29, 2012
File formatpdf
ProvinceNorthwest Territories
Lat/Long WENS-115.0000 -114.5000 62.5000 62.2500
Subjectssurficial geology/geomorphology; Nature and Environment; permafrost; freezing ground; ground ice; ground temperatures; models; climate; climate, arctic; temperature; snow; climate change; Cenozoic
Illustrationsplots; graphs; histograms; tables
ProgramClimate Change Geoscience, Program Management - Climate Change Science
AbstractClimate variables were examined to evaluate their simplification for use in permafrost models, using data for Yellowknife Northwest Territories, Canada, as an example. Results suggest that conversion of the annual temperature cycle to a sine wave is an acceptable approximation, as long as the wave retains the correct values for the annual freezing and thawing degree-day totals. Evolution of the annual snow cover can be approximated by a parabolic accumulation function; the delay of snow cover initiation with respect to the start of the freezing season, the snow accumulation function, and snow density are all critical, while end-of-season snowpack evolution is of secondary importance.