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 16.31 6.30 0.96 0.37 6.25
1980 15.98 6.17 0.63 0.24 4.10
1981 15.65 6.04 0.30 0.11 1.95
1982 16.06 6.20 0.71 0.27 4.63
1983 16.02 6.19 0.67 0.26 4.36
1984 15.32 5.92 -0.03 -0.01 -0.20
1985 15.67 6.05 0.32 0.12 2.08
1986 15.89 6.14 0.54 0.21 3.52
1987 16.11 6.22 0.76 0.29 4.95
1988 15.61 6.03 0.26 0.10 1.69
1989 15.56 6.01 0.21 0.08 1.37
1990 15.56 6.01 0.21 0.08 1.37
1991 15.26 5.89 -0.09 -0.04 -0.59
1992 15.50 5.98 0.15 0.05 0.98
1993 15.73 6.07 0.38 0.14 2.48
1994 15.61 6.03 0.26 0.10 1.69
1995 15.24 5.88 -0.11 -0.05 -0.72
1996 15.17 5.86 -0.18 -0.07 -1.17
1997 15.52 5.99 0.17 0.06 1.11
1998 15.77 6.09 0.42 0.16 2.74
1999 15.37 5.93 0.02 0.00 0.13
2000 15.18 5.86 -0.17 -0.07 -1.11
2001 15.27 5.90 -0.08 -0.03 -0.52
2002 15.36 5.93 0.01 0.00 0.07
2003 15.25 5.89 -0.10 -0.04 -0.65
2004 14.93 5.76 -0.42 -0.17 -2.74
2005 14.36 5.54 -0.99 -0.39 -6.45
2006 14.42 5.57 -0.93 -0.36 -6.06
2007 14.53 5.61 -0.82 -0.32 -5.34
2008 15.01 5.80 -0.34 -0.13 -2.21
2009 14.85 5.73 -0.50 -0.20 -3.26
2010 14.59 5.63 -0.76 -0.30 -4.95
2011 14.38 5.55 -0.97 -0.38 -6.32
2012 14.59 5.63 -0.76 -0.30 -4.95
2013 14.69 5.67 -0.66 -0.26 -4.30
2014 14.44 5.58 -0.91 -0.35 -5.93