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 15.54 6.00 1.01 0.39 6.95
1980 14.96 5.78 0.43 0.17 2.96
1981 15.03 5.80 0.50 0.19 3.44
1982 15.26 5.89 0.73 0.28 5.02
1983 15.10 5.83 0.57 0.22 3.92
1984 14.61 5.64 0.08 0.03 0.55
1985 14.86 5.74 0.33 0.13 2.27
1986 15.02 5.80 0.49 0.19 3.37
1987 15.20 5.87 0.67 0.26 4.61
1989 15.12 5.84 0.59 0.23 4.06
1990 14.95 5.77 0.42 0.16 2.89
1991 14.46 5.58 -0.07 -0.03 -0.48
1992 14.72 5.68 0.19 0.07 1.31
1993 15.08 5.82 0.55 0.21 3.79
1994 14.82 5.72 0.29 0.11 2.00
1995 14.62 5.64 0.09 0.03 0.62
1996 14.21 5.49 -0.32 -0.12 -2.20
1997 14.47 5.59 -0.06 -0.02 -0.41
1998 14.81 5.72 0.28 0.11 1.93
1999 14.47 5.59 -0.06 -0.02 -0.41
2000 14.41 5.56 -0.12 -0.05 -0.83
2001 14.31 5.53 -0.22 -0.08 -1.51
2002 14.45 5.58 -0.08 -0.03 -0.55
2003 14.46 5.58 -0.07 -0.03 -0.48
2004 14.03 5.42 -0.50 -0.19 -3.44
2005 13.66 5.27 -0.87 -0.34 -5.99
2006 13.60 5.25 -0.93 -0.36 -6.40
2007 13.77 5.32 -0.76 -0.29 -5.23
2008 14.05 5.42 -0.48 -0.19 -3.30
2009 14.08 5.44 -0.45 -0.17 -3.10
2010 13.80 5.33 -0.73 -0.28 -5.02
2011 13.57 5.24 -0.96 -0.37 -6.61
2012 13.77 5.32 -0.76 -0.29 -5.23
2013 13.78 5.32 -0.75 -0.29 -5.16
2014 13.73 5.30 -0.80 -0.31 -5.51