of glacier organisms
Ice core analysis
Biotic albedo reduction
What are Cryoconite
of graduate thesis
(C) Copyright 1997-2000,
Albedo reduction of glaier surface
by biological activity
The snow algae play an important role in melting process of
the glaciers; they accelerate glacier melting and affect glacial
mass balance by forming dark-colored materials (cryoconite) on
glaciers and reducing albedo.
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Yala glacier in Himalayas.
Surface of the glacier does not seem white but
black. Dark colored materials covered the surface reduces albedo
of the surface. Melting of the surface is accelarated by the
dirt three times more than no dirt surface. The dirt consist
of mainly biological production, such as algae and humic substance.