NSIDC's website will undergo planned maintenance on Wednesday, January 15, from 10 a.m. to 12 p.m. (U.S. Mountain Time). During this time, the NSIDC.org website and most NSIDC data access may be briefly unavailable.
arctic circle
a line of latitude at approximately 66 degrees 33 minutes N (66°33’ N) that marks the border of the Arctic, the northernmost region of Earth. Along this line, the sun does not set on the day of the summer solstice, and does not rise on the day of the winter solstice.
Topic(s):
climatology and meteorology