The results indicate that concurrent atmospheric circulation trends contribute to forcing winter and summer sea ice concentration trends in many parts of the marginal ice zone during both periods. (wattsupwiththat.com)
A part of the seasonal ice zone that varies in width from 100 to 200 kilometers (62 to 124 miles) that extends from the ice edge into the ice pack. (searcharcticscience.org)
Both are within the sea ice zone of what was an average year during 1981 - 2010. (climate.copernicus.eu)