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 11.16 4.31 0.17 0.07 1.55
1980 11.69 4.51 0.70 0.27 6.37
1981 11.17 4.31 0.18 0.07 1.64
1982 11.91 4.60 0.92 0.36 8.37
1983 11.64 4.49 0.65 0.25 5.91
1984 11.29 4.36 0.30 0.12 2.73
1985 11.39 4.40 0.40 0.16 3.64
1986 11.78 4.55 0.79 0.31 7.19
1987 11.52 4.45 0.53 0.21 4.82
1988 11.69 4.51 0.70 0.27 6.37
1989 11.50 4.44 0.51 0.20 4.64
1990 11.31 4.37 0.32 0.13 2.91
1991 11.12 4.29 0.13 0.05 1.18
1992 11.87 4.58 0.88 0.34 8.01
1993 11.73 4.53 0.74 0.29 6.73
1994 11.30 4.36 0.31 0.12 2.82
1995 10.97 4.24 -0.02 -0.00 -0.18
1996 10.56 4.08 -0.43 -0.16 -3.91
1997 10.91 4.21 -0.08 -0.03 -0.73
1998 10.75 4.15 -0.24 -0.09 -2.18
1999 10.99 4.24 0.00 0.00 0.00
2000 10.54 4.07 -0.45 -0.17 -4.09
2001 10.92 4.22 -0.07 -0.02 -0.64
2002 10.78 4.16 -0.21 -0.08 -1.91
2003 10.29 3.97 -0.70 -0.27 -6.37
2004 10.65 4.11 -0.34 -0.13 -3.09
2005 10.47 4.04 -0.52 -0.20 -4.73
2006 9.84 3.80 -1.15 -0.44 -10.46
2007 10.05 3.88 -0.94 -0.36 -8.55
2008 10.62 4.10 -0.37 -0.14 -3.37
2009 10.27 3.97 -0.72 -0.27 -6.55
2010 9.88 3.81 -1.11 -0.43 -10.10
2011 10.00 3.86 -0.99 -0.38 -9.01
2012 9.92 3.83 -1.07 -0.41 -9.74
2013 10.24 3.95 -0.75 -0.29 -6.82