Wideband Radiometric Signatures of Snow Pack in the Keweenaw Peninsula, Michigan, During the Winter 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 wide-band microwave radiometers operating with about 1 GHz of bandwidth at L-band frequencies. Despite considerable ra-dio 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.