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 14.74 5.69 0.81 0.31 5.81
1980 13.24 5.11 -0.69 -0.27 -4.95
1981 13.92 5.37 -0.01 -0.01 -0.07
1982 13.99 5.40 0.06 0.02 0.43
1983 13.35 5.15 -0.58 -0.23 -4.16
1984 13.94 5.38 0.01 0.00 0.07
1985 13.99 5.40 0.06 0.02 0.43
1986 13.31 5.14 -0.62 -0.24 -4.45
1987 13.31 5.14 -0.62 -0.24 -4.45
1988 13.60 5.25 -0.33 -0.13 -2.37
1989 14.17 5.47 0.24 0.09 1.72
1990 13.75 5.31 -0.18 -0.07 -1.29
1991 13.52 5.22 -0.41 -0.16 -2.94
1992 13.34 5.15 -0.59 -0.23 -4.24
1993 13.61 5.25 -0.32 -0.13 -2.30
1994 14.13 5.46 0.20 0.08 1.44
1995 13.84 5.34 -0.09 -0.04 -0.65
1996 14.38 5.55 0.45 0.17 3.23
1997 13.67 5.28 -0.26 -0.10 -1.87
1998 13.98 5.40 0.05 0.02 0.36
1999 14.22 5.49 0.29 0.11 2.08
2000 14.41 5.56 0.48 0.18 3.45
2001 13.91 5.37 -0.02 -0.01 -0.14
2002 12.94 5.00 -0.99 -0.38 -7.11
2003 14.48 5.59 0.55 0.21 3.95
2004 14.36 5.54 0.43 0.16 3.09
2005 13.94 5.38 0.01 0.00 0.07
2006 13.98 5.40 0.05 0.02 0.36
2007 13.87 5.36 -0.06 -0.02 -0.43
2008 14.52 5.61 0.59 0.23 4.24
2009 14.41 5.56 0.48 0.18 3.45
2010 15.00 5.79 1.07 0.41 7.68
2011 13.78 5.32 -0.15 -0.06 -1.08
2012 14.20 5.48 0.27 0.10 1.94
2013 14.65 5.66 0.72 0.28 5.17