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 14.06 5.43 0.67 0.26 5.00
1980 14.04 5.42 0.65 0.25 4.85
1981 13.90 5.37 0.51 0.20 3.81
1982 14.17 5.47 0.78 0.30 5.83
1983 13.54 5.23 0.15 0.06 1.12
1984 13.68 5.28 0.29 0.11 2.17
1985 14.23 5.49 0.84 0.32 6.27
1986 13.52 5.22 0.13 0.05 0.97
1987 13.81 5.33 0.42 0.16 3.14
1988 13.69 5.29 0.30 0.12 2.24
1989 12.98 5.01 -0.41 -0.16 -3.06
1990 13.30 5.14 -0.09 -0.03 -0.67
1991 13.51 5.22 0.12 0.05 0.90
1992 13.25 5.12 -0.14 -0.05 -1.05
1993 13.54 5.23 0.15 0.06 1.12
1994 13.73 5.30 0.34 0.13 2.54
1995 13.04 5.03 -0.35 -0.14 -2.61
1996 13.06 5.04 -0.33 -0.13 -2.46
1997 13.32 5.14 -0.07 -0.03 -0.52
1998 13.80 5.33 0.41 0.16 3.06
1999 13.86 5.35 0.47 0.18 3.51
2000 13.18 5.09 -0.21 -0.08 -1.57
2001 13.72 5.30 0.33 0.13 2.46
2002 13.12 5.07 -0.27 -0.10 -2.02
2003 13.00 5.02 -0.39 -0.15 -2.91
2004 12.58 4.86 -0.81 -0.31 -6.05
2005 12.99 5.02 -0.40 -0.15 -2.99
2006 12.62 4.87 -0.77 -0.30 -5.75
2007 12.89 4.98 -0.50 -0.19 -3.73
2008 13.19 5.09 -0.20 -0.08 -1.49
2009 13.40 5.17 0.01 0.00 0.07
2010 13.11 5.06 -0.28 -0.11 -2.09
2011 12.81 4.95 -0.58 -0.22 -4.33
2012 13.12 5.07 -0.27 -0.10 -2.02
2013 13.09 5.05 -0.30 -0.12 -2.24
2014 12.78 4.93 -0.61 -0.24 -4.56