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.

Place mouse on axis and left-click to pan; wheel up/down for zoom in/out (or shift key+left-click).

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 10.41 4.02 -0.86 -0.33 -7.63
1980 11.15 4.31 -0.12 -0.04 -1.06
1981 12.19 4.71 0.92 0.36 8.16
1982 9.90 3.82 -1.37 -0.53 -12.16
1983 11.38 4.39 0.11 0.04 0.98
1984 11.47 4.43 0.20 0.08 1.77
1985 12.39 4.78 1.12 0.43 9.94
1986 10.13 3.91 -1.14 -0.44 -10.12
1988 12.22 4.72 0.95 0.37 8.43
1989 10.70 4.13 -0.57 -0.22 -5.06
1990 10.66 4.12 -0.61 -0.23 -5.41
1991 10.80 4.17 -0.47 -0.18 -4.17
1992 11.22 4.33 -0.05 -0.02 -0.44
1993 11.01 4.25 -0.26 -0.10 -2.31
1994 10.68 4.12 -0.59 -0.23 -5.24
1995 11.35 4.38 0.08 0.03 0.71
1996 10.53 4.07 -0.74 -0.28 -6.57
1997 11.41 4.41 0.14 0.06 1.24
1998 11.38 4.39 0.11 0.04 0.98
1999 11.59 4.47 0.32 0.12 2.84
2000 10.82 4.18 -0.45 -0.17 -3.99
2001 10.96 4.23 -0.31 -0.12 -2.75
2002 11.56 4.46 0.29 0.11 2.57
2003 11.38 4.39 0.11 0.04 0.98
2004 11.40 4.40 0.13 0.05 1.15
2005 10.73 4.14 -0.54 -0.21 -4.79
2006 10.49 4.05 -0.78 -0.30 -6.92
2007 12.67 4.89 1.40 0.54 12.42
2008 12.28 4.74 1.01 0.39 8.96
2009 11.42 4.41 0.15 0.06 1.33
2010 12.18 4.70 0.91 0.35 8.07
2011 12.26 4.73 0.99 0.38 8.78
2012 11.37 4.39 0.10 0.04 0.89
2013 12.63 4.88 1.36 0.53 12.07