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.

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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 7.20 2.78 0.68 0.26 10.43
1980 7.85 3.03 1.33 0.51 20.40
1981 7.25 2.80 0.73 0.28 11.20
1982 7.45 2.88 0.93 0.36 14.26
1983 7.52 2.90 1.00 0.38 15.34
1984 7.17 2.77 0.65 0.25 9.97
1985 6.93 2.68 0.41 0.16 6.29
1986 7.54 2.91 1.02 0.39 15.64
1987 7.48 2.89 0.96 0.37 14.72
1988 7.49 2.89 0.97 0.37 14.88
1989 7.04 2.72 0.52 0.20 7.98
1990 6.24 2.41 -0.28 -0.11 -4.29
1991 6.55 2.53 0.03 0.01 0.46
1992 7.55 2.92 1.03 0.40 15.80
1993 6.50 2.51 -0.02 -0.01 -0.31
1994 7.18 2.77 0.66 0.25 10.12
1995 6.13 2.37 -0.39 -0.15 -5.98
1996 7.88 3.04 1.36 0.52 20.86
1997 6.74 2.60 0.22 0.08 3.37
1998 6.56 2.53 0.04 0.01 0.61
1999 6.24 2.41 -0.28 -0.11 -4.29
2000 6.32 2.44 -0.20 -0.08 -3.07
2001 6.75 2.61 0.23 0.09 3.53
2002 5.96 2.30 -0.56 -0.22 -8.59
2003 6.15 2.37 -0.37 -0.15 -5.67
2004 6.05 2.34 -0.47 -0.18 -7.21
2005 5.57 2.15 -0.95 -0.37 -14.57
2006 5.92 2.29 -0.60 -0.23 -9.20
2007 4.30 1.66 -2.22 -0.86 -34.05
2008 4.73 1.83 -1.79 -0.69 -27.45
2009 5.39 2.08 -1.13 -0.44 -17.33
2010 4.93 1.90 -1.59 -0.62 -24.39
2011 4.63 1.79 -1.89 -0.73 -28.99
2012 3.63 1.40 -2.89 -1.12 -44.33
2013 5.35 2.07 -1.17 -0.45 -17.94