Wideband radiometric signatures of snowpack in the keweenaw peninsula, michigan, during thewinter of 2021-22

Wideband microwave radiometry holds promise for new in-sights for passive remote sensing of snow packs. We report on a plot-scale, season-long field experiment using two wideband microwave radiometers operating with about 1 GHz of bandwidth at L-band frequencies. Despite considerable radio frequency interference (RFI), there remains many 100's of MHz of usable bandwdith for measurement. We report on the wideband signatures of a snowpack that varies in depth from no snow to more than 57 cm deep.