(Table 3) Air temperatures, and snow and ice characteristics of fresh and brackish water lakes in the Northwest Territories, Canada ...

• Main Authors: Gunn, Grant E, Duguay, Claude R, Derksen, Chris, Lemmetyinen, Juha, Toose, Peter
• Format: Dataset
• Language: English
• Published: PANGAEA 2011
• Subjects: Event label; Latitude of event; Longitude of event; Water bodies; Site; DATE/TIME; Date/time end; Temperature, air; Snow thickness; Snow water equivalent; Density, snow; Snow grain size; Sea ice thickness; Ice type; Snow/ice sample; International Polar Year 2007-2008 IPY; Canada; Inuvik; Northwest Territories; International Polar Year; IPY; Sea ice
• Online Access: https://dx.doi.org/10.1594/pangaea.810343; https://doi.pangaea.de/10.1594/PANGAEA.810343

The algorithms designed to estimate snow water equivalent (SWE) using passive microwave measurements falter in lake-rich high-latitude environments due to the emission properties of ice covered lakes on low frequency measurements. Microwave emission models have been used to simulate brightness temperatures (Tbs) for snowpack characteristics in terrestrial environments but cannot be applied to snow on lakes because of the differing subsurface emissivities and scattering matrices present in ice. This paper examines the performance of a modified version of the Helsinki University of Technology (HUT) snow emission model that incorporates microwave emission from lake ice and sub-ice water. Inputs to the HUT model include measurements collected over brackish and freshwater lakes north of Inuvik, Northwest Territories, Canada in April 2008, consisting of snowpack (depth, density, and snow water equivalent) and lake ice (thickness and ice type). Coincident airborne radiometer measurements at a resolution of 80x100 m ... : Note that the exact position of Lakes A and B could not be derived from the article. Data extracted in the frame of a joint ICSTI/PANGAEA IPY effort, see http://doi.pangaea.de/10.1594/PANGAEA.150150 ...