Cryoconite
Encyclopedia
Cryoconite is powdery windblown dust
which is deposited and builds up on snow
, glacier
s, or icecap
s. It contains small amounts of soot
which absorbs solar radiation melting the snow or ice beneath the deposit sometimes creating a cryoconite hole. Cryoconite may contain dust from far away continental deserts or farmland, particles from volcanic eruptions or power plant emissions, and soot. It was first described and named by Nils A. E. Nordenskiöld when he traveled on Greenland's icecap in 1870.
Soot decreases the reflectivity, or albedo
of ice, increasing absorption of heat. Cryoconite is constantly being added to snow and ice formations along with snow. It is buried within the snow or ice, but as the snow or ice melts increasing amounts of dark material is exposed on the surface, accelerating melting.
Dust
Dust consists of particles in the atmosphere that arise from various sources such as soil dust lifted up by wind , volcanic eruptions, and pollution...
which is deposited and builds up on snow
Snow
Snow is a form of precipitation within the Earth's atmosphere in the form of crystalline water ice, consisting of a multitude of snowflakes that fall from clouds. Since snow is composed of small ice particles, it is a granular material. It has an open and therefore soft structure, unless packed by...
, glacier
Glacier
A glacier is a large persistent body of ice that forms where the accumulation of snow exceeds its ablation over many years, often centuries. At least 0.1 km² in area and 50 m thick, but often much larger, a glacier slowly deforms and flows due to stresses induced by its weight...
s, or icecap
Icecap
Icecap my refer to* Ice cap, a geographical feature* Icecap , a blog skeptical of global warming* Raleigh IceCaps, a defunct ECHL Hockey Team...
s. It contains small amounts of soot
Soot
Soot is a general term that refers to impure carbon particles resulting from the incomplete combustion of a hydrocarbon. It is more properly restricted to the product of the gas-phase combustion process but is commonly extended to include the residual pyrolyzed fuel particles such as cenospheres,...
which absorbs solar radiation melting the snow or ice beneath the deposit sometimes creating a cryoconite hole. Cryoconite may contain dust from far away continental deserts or farmland, particles from volcanic eruptions or power plant emissions, and soot. It was first described and named by Nils A. E. Nordenskiöld when he traveled on Greenland's icecap in 1870.
Soot decreases the reflectivity, or albedo
Albedo
Albedo , or reflection coefficient, is the diffuse reflectivity or reflecting power of a surface. It is defined as the ratio of reflected radiation from the surface to incident radiation upon it...
of ice, increasing absorption of heat. Cryoconite is constantly being added to snow and ice formations along with snow. It is buried within the snow or ice, but as the snow or ice melts increasing amounts of dark material is exposed on the surface, accelerating melting.