Photograph illustrates the impact of a rain-on-snow event during the winter of 2018.
Observation by Julienne Stroeve:
This is an example of an extreme rain-on-snow event. The striations are likely drainage channels from heavy rainfall that was more intense at lower elevations.
Comment by Andrew Barrett of NSIDC:
I assumed the striations were drainage channels - runnels - from the rain rather than wind. You see similar texture during the melt season on steeper slopes. I think Tad Pfeffer has a paper in Journal of Glaciology on them.
LEO Network editors:
See this Journal of Glaciology link for articles by Tad Pfeffer.
For more on Rain-on-Snow events, see the Arctic Rain on Snow Study (AROSS) Map here