Counter defines monthly period which the given statistic represents.  Use buttons [>>] and [<<] to browse forward and backward in monthly periods. Use [Statistic]-menu to choose between statistics. Use button [2x1]to switch to dual window mode to compare pairs of charts. You may also choose to browse actual temporal array for Baltic region.

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Given statistics were estimated at AARI and are based on information extracted for Baltic region from weekly USA National Ice Center (NIC)  sea ice conditions charts prepared in World Meteorologocal Organization SIGRID format (WMO, 1989) for 1972-1994 interval   for Arctic East (90W eastward to 90E; 45N to 90N). Layer of sea ice total concentration is depicted in polar stereographical projection.

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For further information about the source data please contact NSIDC. At AARI please contact Vasily Smolianitski (vms@aari.nw.ru).