Ice Chart Colour Code Standard, Version 1.0, 2014.

Abstract

This document describes two separate colour codes for use on ice charts: the first one based on total concentration (CT) intended for use when the stage of development is relatively uniform but concentration is highly variable (e.g. arctic summer navigation) and the second one based on stage of development (SoD) intended for use when the concentration is relatively uniform (high) but the stage of development is variable (e.g. arctic winter navigation). Document is an integral part and extension of the WMO Sea Ice Nomenclature, Supplement No. 4 (WMO-No. 259) currently in force.