AARI methodology for sea ice charts composition

Sea ice charts of the Arctic and Antarctic Research Institute (AARI) are widely used nowadays for a variety of scientific and practical tasks. However, detailed description of ice charts composition still has not been published. In this paper, staff members of the Russian Ice Service (Center “Sever”, AARI), directly involved in ice charts composition, give information about sea ice analysis methodology and the data they use. Information presented is necessary for a correct ice charts use for different needs.