L-band radiometry soil freeze/thaw state validation using ground measurements vs. air temperature

Aaron A Berg, University of Guelph, Department of Geography, Environment and Geomatics, Guelph, ON, Canada, Matthew Williamson, University of Guelph, Geography, Guelph, ON, Canada, Tracy L Rowlandson, University of Guelph, Guelph, ON, Canada, Alexandre Roy, Centre d'étude Nordique, Québec, Canada, Erica Tetlock, Environment and Climate Change Canada, Saskatoon, SK, Canada, Chris Derksen, Environment and Climate Change Canada, Climate Reseach Division, Toronto, ON, Canada and Peter Toose, Environment and Climate Change Canada, Climate Research Division, Toronto, ON, Canada