Snow permittivity measured during the MOSAiC expedition

Dielectric permittivity (ε′) and dielectric loss (ε″) measurements were made of discrete snow layers and at fixed vertical intervals. Measurements were made using the Stevens Water Monitoring Systems Hydra Probe (a.k.a. hydraprobe). The hydraprobe uses a tine assembly consisting of a central waveguide and three outer rods, each 4.5 cm in length and 3 mm wide, to measure the impedance of the sample at 50 MHz over a cylindrical area of 5.7 cm in length by 3 cm in diameter. The sensor was calibrated using isopropyl alcohol for ε' (±0.6 %) and a saline solution of known conductivity for ε'' (±0.7 %). Samples were obtained by horizontally inserting the probe tines into the snow, at a given layer/interval (every 3cm), to their maximum depth and collecting a response. 0 cm is the snow-ice interface. For related temperature and density measurements see https://doi.pangaea.de/10.1594/PANGAEA.940200 and https://doi.pangaea.de/10.1594/PANGAEA.940214 in this bundled dataset. Please direct inquiries to; Aikaterini Tavri (PS122/4), Ruzica Dadic (PS122/5)