Brown, Laura C; Duguay, Claude R (2011): Monthly air temperatures, snow density and snow and ice thickness at Malcolm Ramsay Lake, North America [dataset publication series]. PANGAEA, https://doi.org/10.1594/PANGAEA.808080, Supplement to: Brown, LC; Duguay, CR (2011): A comparison of simulated and measured lake ice thickness using a Shallow Water Ice Profiler. Hydrological Processes, 25(19), 1932-1941, https://doi.org/10.1002/hyp.8087
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Abstract:
In northern regions where observational data is sparse, lake ice models are ideal tools as they can provide valuable information on ice cover regimes. The Canadian Lake Ice Model was used to simulate ice cover for a lake near Churchill, Manitoba, Canada throughout the 2008/2009 and 2009/2010 ice covered seasons. To validate and improve the model results, in situ measurements of the ice cover through both seasons were obtained using an upward-looking sonar device Shallow Water Ice Profiler (SWIP) installed on the bottom of the lake. The SWIP identified the ice-on/off dates as well as collected ice thickness measurements. In addition, a digital camera was installed on shore to capture images of the ice cover through the seasons and field measurements were obtained of snow depth on the ice, and both the thickness of snow ice (if present) and total ice cover. Altering the amounts of snow cover on the ice surface to represent potential snow redistribution affected simulated freeze-up dates by a maximum of 22 days and break-up dates by a maximum of 12 days, highlighting the importance of accurately representing the snowpack for lake ice modelling. The late season ice thickness tended to be under estimated by the simulations with break-up occurring too early, however, the evolution of the ice cover was simulated to fall between the range of the full snow and no snow scenario, with the thickness being dependant on the amount of snow cover on the ice surface.
Project(s):
Coverage:
Latitude: 58.720000 * Longitude: -93.780000
Date/Time Start: 2008-10-15T00:00:00 * Date/Time End: 2010-07-15T00:00:00
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Comment:
Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
2 datasets
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Datasets listed in this publication series
- Brown, LC; Duguay, CR (2011): (Table I) Monthly average air temperatures during two ice seasons at Malcolm Ramsay Lake. https://doi.org/10.1594/PANGAEA.808078
- Brown, LC; Duguay, CR (2011): (Table II) Monthly average snow depth, snow density and ice thickness at Malcolm Ramsay Lake. https://doi.org/10.1594/PANGAEA.808079