A pattern of variable brightness observable on the underside of a cloud layer, and caused by the different reflectivities of material on the earth’s surface immediately beneath the clouds; this term is used mainly in polar regions.
Related terms:
A pattern of variable brightness observable on the underside of a cloud layer, and caused by the different reflectivities of material on the earth’s surface immediately beneath the clouds; this term is used mainly in polar regions.
Related terms: