Algae responsible for large albedo feedback on Greenland’s frozen surface, not only soot and dust.
We believe gathering measurements from the surface of Greenland ice is fundamental to advancing our understanding of the melting Arctic. http://darksnowproject.org
Dark Snow 2017 Update “Am I really seeing that?” is a common sensation here, as below, what looks like a glimpse from the outskirts of Mordor. https://climatecrocks.com/2017/07/17/dark-snow-2017-photo-update