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 26.26 10.14 0.93 0.36 3.67
1980 26.14 10.09 0.81 0.31 3.20
1981 26.09 10.07 0.76 0.29 3.00
1982 26.37 10.18 1.04 0.40 4.11
1983 25.98 10.03 0.65 0.25 2.57
1984 26.01 10.04 0.68 0.26 2.68
1985 25.49 9.84 0.16 0.06 0.63
1986 25.74 9.94 0.41 0.16 1.62
1987 25.66 9.91 0.33 0.13 1.30
1988 26.01 10.04 0.68 0.26 2.68
1989 25.66 9.91 0.33 0.13 1.30
1990 24.78 9.57 -0.55 -0.21 -2.17
1991 25.58 9.88 0.25 0.10 0.99
1992 26.04 10.05 0.71 0.27 2.80
1993 25.08 9.68 -0.25 -0.10 -0.99
1994 25.85 9.98 0.52 0.20 2.05
1995 24.88 9.61 -0.45 -0.17 -1.78
1996 26.31 10.16 0.98 0.38 3.87
1997 25.32 9.78 -0.01 -0.00 -0.04
1998 25.68 9.92 0.35 0.14 1.38
1999 25.65 9.90 0.32 0.12 1.26
2000 25.82 9.97 0.49 0.19 1.93
2001 25.51 9.85 0.18 0.07 0.71
2002 23.96 9.25 -1.37 -0.53 -5.41
2003 24.90 9.61 -0.43 -0.17 -1.70
2004 25.05 9.67 -0.28 -0.11 -1.11
2005 24.56 9.48 -0.77 -0.30 -3.04
2006 24.88 9.61 -0.45 -0.17 -1.78
2007 23.40 9.03 -1.93 -0.75 -7.62
2008 23.98 9.26 -1.35 -0.52 -5.33
2009 24.90 9.61 -0.43 -0.17 -1.70
2010 24.86 9.60 -0.47 -0.18 -1.86
2011 23.72 9.16 -1.61 -0.62 -6.36
2012 23.11 8.92 -2.22 -0.86 -8.76
2013 25.05 9.67 -0.28 -0.11 -1.11
2014 25.42 9.81 0.09 0.03 0.36