The Collaborative International Dictionary of English v.0.48:
north-polar \north-polar\ adj. Of or pertaining to the North Pole; at or near the north pole; characteristic of the north pole. Syn: Arctic. [WordNet 1.5]WordNet (r) 3.0 (2006):
north-polar adj 1: of or relating to the Arctic; "the Arctic summer" [syn: north-polar, Arctic]