We measured during the MOSAiC field experiment the snow microstructure
on sea-ice from early winter to the melt season, and continued
measurements with the surface scattering layer. We could measure every
week 1-2 full snow profiles between 0.1-0.3 m. We extracted, mostly
in-situ, cores of 48-78 mm diameter and of about 0.1 m length, and
scanned with 18-28 µm resolution. The goal of these measurements is to
understand the formation and metamorphism of the snowpack in detail, and
to derive detailed geometrical and physical properties from the samples.
We will present first examples and and overview of characteristic snow
profiles from leg 1 - 4, spanning the winter, spring and melt season.