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 13.54 5.23 0.48 0.19 3.68
1980 13.72 5.30 0.66 0.26 5.05
1981 13.74 5.31 0.68 0.27 5.21
1982 13.83 5.34 0.77 0.30 5.90
1983 13.44 5.19 0.38 0.15 2.91
1984 13.18 5.09 0.12 0.05 0.92
1985 13.19 5.09 0.13 0.05 1.00
1986 13.40 5.17 0.34 0.13 2.60
1988 13.78 5.32 0.72 0.28 5.51
1989 13.47 5.20 0.41 0.16 3.14
1990 13.27 5.12 0.21 0.08 1.61
1991 13.17 5.08 0.11 0.04 0.84
1992 13.46 5.20 0.40 0.16 3.06
1993 13.52 5.22 0.46 0.18 3.52
1994 13.53 5.22 0.47 0.18 3.60
1995 12.98 5.01 -0.08 -0.03 -0.61
1996 13.14 5.07 0.08 0.03 0.61
1997 13.29 5.13 0.23 0.09 1.76
1998 13.26 5.12 0.20 0.08 1.53
1999 12.88 4.97 -0.18 -0.07 -1.38
2000 12.81 4.95 -0.25 -0.09 -1.91
2001 12.84 4.96 -0.22 -0.08 -1.68
2002 12.82 4.95 -0.24 -0.09 -1.84
2003 12.82 4.95 -0.24 -0.09 -1.84
2004 12.72 4.91 -0.34 -0.13 -2.60
2005 12.47 4.81 -0.59 -0.23 -4.52
2006 12.27 4.74 -0.79 -0.30 -6.05
2007 12.39 4.78 -0.67 -0.26 -5.13
2008 12.52 4.83 -0.54 -0.21 -4.13
2009 12.51 4.83 -0.55 -0.21 -4.21
2010 12.02 4.64 -1.04 -0.40 -7.96
2011 12.40 4.79 -0.66 -0.25 -5.05
2012 12.20 4.71 -0.86 -0.33 -6.58
2013 12.38 4.78 -0.68 -0.26 -5.21