Zhubov Scale

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.

Famous quotes containing the word scale:

    There is something in us, somehow, that, in the most degraded condition, we snatch at a chance to deceive ourselves into a fancied superiority to others, whom we suppose lower in the scale than ourselves.
    Herman Melville (1819–1891)