• 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.

equator
the line of latitude 0°, which is equidistant from the poles, and which separates the Northern Hemisphere from the Southern Hemisphere.