The Zhubov scale is a way of reporting polar sea ice coverage, it was developed in the former USSR by Russian naval officer N. N. Zhubov (1895 - 1960).
The Zhubov scale is measured using the unit ball, one ball equals 10% coverage, five balls 50% coverage and so on.
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“I by no means rank poetry high in the scale of intelligence—this may look like affectation but it is my real opinion. It is the lava of the imagination whose eruption prevents an earthquake.”
—George Gordon Noel Byron (1788–1824)