Sea Ice and Snow Cover Extent

Sea ice extent provided by the National Snow and Ice Data Center (NSIDC) is available from 1979–2014 for the Northern Hemisphere, Southern Hemisphere, and Globe. Snow cover extent provided by the Rutgers University Global Snow Laboratory (GSL) is available from 1967–2014 for the North America + Greenland, Northern Hemisphere, Eurasia, and North America. All anomalies are relative to the 1981–2010 average.

Place mouse on axis and left-click to pan; wheel up/down for zoom in/out (or shift key+left-click).

Source: National Snow and Ice Data Center (NSIDC)

Download: xml csv json
Date Extent
million km²
Extent
million mi²
Anomaly
million km²
Anomaly
million mi²
Anomaly
% Difference
1979 23.67 9.14 1.52 0.59 6.86
1980 21.42 8.27 -0.73 -0.28 -3.30
1981 21.43 8.27 -0.72 -0.28 -3.25
1982 23.85 9.21 1.70 0.66 7.67
1983 22.39 8.64 0.24 0.09 1.08
1984 22.17 8.56 0.02 0.01 0.09
1985 22.39 8.64 0.24 0.09 1.08
1986 22.06 8.52 -0.09 -0.03 -0.41
1987 22.69 8.76 0.54 0.21 2.44
1988 22.06 8.52 -0.09 -0.03 -0.41
1989 21.29 8.22 -0.86 -0.33 -3.88
1990 22.16 8.56 0.01 0.01 0.05
1991 22.42 8.66 0.27 0.11 1.22
1992 22.12 8.54 -0.03 -0.01 -0.14
1993 22.36 8.63 0.21 0.08 0.95
1994 22.62 8.73 0.47 0.18 2.12
1995 22.37 8.64 0.22 0.09 0.99
1996 22.21 8.58 0.06 0.03 0.27
1997 21.68 8.37 -0.47 -0.18 -2.12
1998 22.45 8.67 0.30 0.12 1.35
1999 22.46 8.67 0.31 0.12 1.40
2000 22.40 8.65 0.25 0.10 1.13
2001 22.38 8.64 0.23 0.09 1.04
2002 21.36 8.25 -0.79 -0.30 -3.57
2003 22.34 8.63 0.19 0.08 0.86
2004 21.90 8.46 -0.25 -0.09 -1.13
2005 21.57 8.33 -0.58 -0.22 -2.62
2006 20.54 7.93 -1.61 -0.62 -7.27
2007 20.88 8.06 -1.27 -0.49 -5.73
2008 23.10 8.92 0.95 0.37 4.29
2009 22.93 8.85 0.78 0.30 3.52
2010 22.01 8.50 -0.14 -0.05 -0.63
2011 20.92 8.08 -1.23 -0.47 -5.55
2012 22.71 8.77 0.56 0.22 2.53
2013 22.46 8.67 0.31 0.12 1.40
2014 23.14 8.93 0.99 0.38 4.47