General ice charts of the Arctic Ocean are provided in graphic GIF and vector standard WMO ice chart exchange format SIGRID-3 (WMO Td.1214). Scale of hardcopy corresponds to 1:10000000. During summer period (1 June - 30 September) charts depict distribution of generalized categories of sea ice total concentration for the intervals 1-6/10s and 7-10/10s, during winter period (1 October -31 May) - distribution of generalized sea ice stages of development (ice thickness) - nilas, young, first-year and old ice. Data collection (averaging) is done for preceding 2-5 days interval. Ice charts are issued every Thursday. Ice charts are based on automatical generalization of regional ice charts which are compiled on a basis of analysis of satellite (visible, infra-red and radar) information and reporets from coastal stations and ships. Access to archive is provided from 2007-12-19. Support: AARI operational center, e-mail: service < at > aari.ru.