Sentences with phrase «permanent ice zone»
An area of ocean that extends from the permanent ice zone to the boundary where winter ice extent is at a maximum.
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Thus there is a back and forth in global cloudiness as the Sun's activity level changes over the decades and centuries — such as during the period covering the Medieval Warm Period, the Little Ice Age, and the current warm period — through latitudinal shifting of the jet stream tracks and permanent climate zones.
To the north of 83 ° N, beach ridges are restricted to bays and major river mouths, showing that this coast had permanent sea ice but was within the zone of coastal melt.